Green and high yield synthesis of CdTeHydrotalcite nanocrystals with enhanced photoluminescence stability toward white light emitting diodes
As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applic...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Li, Ge [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2020transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: New ablation evolution behaviors in micro-hole drilling of 2.5D C - Liu, Chang ELSEVIER, 2021, New York, NY [u.a.] |
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| Übergeordnetes Werk: |
volume:228 ; year:2020 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.jlumin.2020.117625 |
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ELV051691795 |
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| 245 | 1 | 6 | |a Green and high yield synthesis of CdTeHydrotalcite nanocrystals with enhanced photoluminescence stability toward white light emitting diodes |
| 264 | 1 | |c 2020transfer abstract | |
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| 520 | |a As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. | ||
| 520 | |a As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. | ||
| 650 | 7 | |a White light emitting diodes |2 Elsevier | |
| 650 | 7 | |a Hydrotalcite |2 Elsevier | |
| 650 | 7 | |a Powders |2 Elsevier | |
| 650 | 7 | |a Quantum dots |2 Elsevier | |
| 650 | 7 | |a Photoluminescence stability |2 Elsevier | |
| 700 | 1 | |a Chen, Tong-Bo |4 oth | |
| 700 | 1 | |a Zhao, Zhixing |4 oth | |
| 700 | 1 | |a Ling, Luting |4 oth | |
| 700 | 1 | |a Li, Qing |4 oth | |
| 700 | 1 | |a Chen, Su |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier |a Liu, Chang ELSEVIER |t New ablation evolution behaviors in micro-hole drilling of 2.5D C |d 2021 |g New York, NY [u.a.] |w (DE-627)ELV00662605X |
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10.1016/j.jlumin.2020.117625 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001169.pica (DE-627)ELV051691795 (ELSEVIER)S0022-2313(20)31592-1 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl Li, Ge verfasserin aut Green and high yield synthesis of CdTeHydrotalcite nanocrystals with enhanced photoluminescence stability toward white light emitting diodes 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. White light emitting diodes Elsevier Hydrotalcite Elsevier Powders Elsevier Quantum dots Elsevier Photoluminescence stability Elsevier Chen, Tong-Bo oth Zhao, Zhixing oth Ling, Luting oth Li, Qing oth Chen, Su oth Enthalten in Elsevier Liu, Chang ELSEVIER New ablation evolution behaviors in micro-hole drilling of 2.5D C 2021 New York, NY [u.a.] (DE-627)ELV00662605X volume:228 year:2020 pages:0 https://doi.org/10.1016/j.jlumin.2020.117625 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 228 2020 0 |
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10.1016/j.jlumin.2020.117625 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001169.pica (DE-627)ELV051691795 (ELSEVIER)S0022-2313(20)31592-1 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl Li, Ge verfasserin aut Green and high yield synthesis of CdTeHydrotalcite nanocrystals with enhanced photoluminescence stability toward white light emitting diodes 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. White light emitting diodes Elsevier Hydrotalcite Elsevier Powders Elsevier Quantum dots Elsevier Photoluminescence stability Elsevier Chen, Tong-Bo oth Zhao, Zhixing oth Ling, Luting oth Li, Qing oth Chen, Su oth Enthalten in Elsevier Liu, Chang ELSEVIER New ablation evolution behaviors in micro-hole drilling of 2.5D C 2021 New York, NY [u.a.] (DE-627)ELV00662605X volume:228 year:2020 pages:0 https://doi.org/10.1016/j.jlumin.2020.117625 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 228 2020 0 |
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10.1016/j.jlumin.2020.117625 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001169.pica (DE-627)ELV051691795 (ELSEVIER)S0022-2313(20)31592-1 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl Li, Ge verfasserin aut Green and high yield synthesis of CdTeHydrotalcite nanocrystals with enhanced photoluminescence stability toward white light emitting diodes 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. White light emitting diodes Elsevier Hydrotalcite Elsevier Powders Elsevier Quantum dots Elsevier Photoluminescence stability Elsevier Chen, Tong-Bo oth Zhao, Zhixing oth Ling, Luting oth Li, Qing oth Chen, Su oth Enthalten in Elsevier Liu, Chang ELSEVIER New ablation evolution behaviors in micro-hole drilling of 2.5D C 2021 New York, NY [u.a.] (DE-627)ELV00662605X volume:228 year:2020 pages:0 https://doi.org/10.1016/j.jlumin.2020.117625 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 228 2020 0 |
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10.1016/j.jlumin.2020.117625 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001169.pica (DE-627)ELV051691795 (ELSEVIER)S0022-2313(20)31592-1 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl Li, Ge verfasserin aut Green and high yield synthesis of CdTeHydrotalcite nanocrystals with enhanced photoluminescence stability toward white light emitting diodes 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. White light emitting diodes Elsevier Hydrotalcite Elsevier Powders Elsevier Quantum dots Elsevier Photoluminescence stability Elsevier Chen, Tong-Bo oth Zhao, Zhixing oth Ling, Luting oth Li, Qing oth Chen, Su oth Enthalten in Elsevier Liu, Chang ELSEVIER New ablation evolution behaviors in micro-hole drilling of 2.5D C 2021 New York, NY [u.a.] (DE-627)ELV00662605X volume:228 year:2020 pages:0 https://doi.org/10.1016/j.jlumin.2020.117625 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 228 2020 0 |
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10.1016/j.jlumin.2020.117625 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001169.pica (DE-627)ELV051691795 (ELSEVIER)S0022-2313(20)31592-1 DE-627 ger DE-627 rakwb eng 670 VZ 51.60 bkl 58.45 bkl Li, Ge verfasserin aut Green and high yield synthesis of CdTeHydrotalcite nanocrystals with enhanced photoluminescence stability toward white light emitting diodes 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. White light emitting diodes Elsevier Hydrotalcite Elsevier Powders Elsevier Quantum dots Elsevier Photoluminescence stability Elsevier Chen, Tong-Bo oth Zhao, Zhixing oth Ling, Luting oth Li, Qing oth Chen, Su oth Enthalten in Elsevier Liu, Chang ELSEVIER New ablation evolution behaviors in micro-hole drilling of 2.5D C 2021 New York, NY [u.a.] (DE-627)ELV00662605X volume:228 year:2020 pages:0 https://doi.org/10.1016/j.jlumin.2020.117625 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 51.60 Keramische Werkstoffe Hartstoffe Werkstoffkunde VZ 58.45 Gesteinshüttenkunde VZ AR 228 2020 0 |
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Enthalten in New ablation evolution behaviors in micro-hole drilling of 2.5D C New York, NY [u.a.] volume:228 year:2020 pages:0 |
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and high yield synthesis of cdtehydrotalcite nanocrystals with enhanced photoluminescence stability toward white light emitting diodes |
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Green and high yield synthesis of CdTeHydrotalcite nanocrystals with enhanced photoluminescence stability toward white light emitting diodes |
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As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. |
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As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. |
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As a new type of luminescent material, quantum dots (QDs) with adjustable photoluminescence and narrow emission have attracted extensive attention in various fields. However, the large-scale production of QDs powders with high stability remains a key challenge, which greatly limits their wide applications. In this work, we synthesized highly stable QDs powders via a facile and simple co-precipitation method by embedding CdTe QDs into inorganic Mg2Al(OH)7 hydrotalcite matrix. This method shows distinct advantages of rapid separation of QDs powder through simple filtration, leading to a high yield of QDs powders and effectively avoiding heavy metal ions waste water. Compared with the parental CdTe QDs, the as-prepared CdTeMg2Al(OH)7 composites exhibit enhanced photoluminescence stability, longer photoluminescence decay lifetime, and better thermostability due to the protection of the Mg2Al(OH)7 hydrotalcite matrix. Based on the above excellent properties, we utilized the CdTe@Mg2Al(OH)7 powders as a red light conversion layer to prepare white light emitting diodes, which show high color-rendering properties with Commission Internationale de L'Eclairage (CIE) color coordinate of (0.3639, 0.3531), high color rendering index (CRI) value of 88, and color temperature (Tc) of 5112 K at 20 mA. This work offers an environmental friendly, low-cost and large-scale production route for high-performance QDs powders. |
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