Adjusting optical and fluorescent properties of quantum dots: Moving towards best optical heat-rejecting materials

Quantum dots (QDs) coatings have recently attracted attentions as novel nano-scale fluorescent cooling materials with adjustable thermo-optical properties for urban overheating mitigation application. In this paper, a mathematical method for the prediction of impact of optical and fluorescent proper...
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Autor*in:	Garshasbi, Samira [verfasserIn] Huang, Shujuan [verfasserIn] Valenta, Jan [verfasserIn] Santamouris, Mat [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	Urban overheating mitigation Fluorescent cooling Quantum dots (QDs) Tuneable thermo-optical properties

Übergeordnetes Werk:	Enthalten in: Solar energy - Amsterdam [u.a.] : Elsevier Science, 1957, 238, Seite 272-279
Übergeordnetes Werk:	volume:238 ; pages:272-279

DOI / URN:	10.1016/j.solener.2022.04.026

Katalog-ID:	ELV007853955

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520			\|a Quantum dots (QDs) coatings have recently attracted attentions as novel nano-scale fluorescent cooling materials with adjustable thermo-optical properties for urban overheating mitigation application. In this paper, a mathematical method for the prediction of impact of optical and fluorescent properties (i.e. absorption edge wavelength (λAE) and quantum yield (QY)) on fluorescent cooling indicators including re-emitted energy (QPL ), effective solar reflection (ESR), and PL-related surface temperature reduction was proposed. The experimental thermal evaluation testing on three PbS QDs sample with different fluorescent properties and their corresponding non-fluorescent samples was performed to assess the accuracy of the proposed predictive model and evaluate the impact of fluorescent/optical properties on their cooling potential. The validated model was then used to optimize the fluorescent cooling potential for QDs samples with different fluorescent/optical properties. According to the model results, surface temperature reduction potential through PL effect demonstrates its highest value for QDs with solar absorption and QY near to unity, and λAE at around 1300 nm. QDs coatings with the optimal solar absorption, QY, and λAE showed up to 35 °C lower surface temperature than their corresponding non-fluorescent reference sample in a typical sunny day in Sydney. The maximum fluorescence contribution (Effective solar reflection (ESR)- Solar reflection (R)) is also estimated to be 0.44 for the fluorescent material with optimal optical and fluorescent property. Results of this study will support the next phase of research on fluorescent cooling.
650		4	\|a Urban overheating mitigation
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700	1		\|a Valenta, Jan \|e verfasserin \|4 aut
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publishDate	2022
allfields	10.1016/j.solener.2022.04.026 doi (DE-627)ELV007853955 (ELSEVIER)S0038-092X(22)00274-2 DE-627 ger DE-627 rda eng 530 DE-600 52.56 bkl Garshasbi, Samira verfasserin aut Adjusting optical and fluorescent properties of quantum dots: Moving towards best optical heat-rejecting materials 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Quantum dots (QDs) coatings have recently attracted attentions as novel nano-scale fluorescent cooling materials with adjustable thermo-optical properties for urban overheating mitigation application. In this paper, a mathematical method for the prediction of impact of optical and fluorescent properties (i.e. absorption edge wavelength (λAE) and quantum yield (QY)) on fluorescent cooling indicators including re-emitted energy (QPL ), effective solar reflection (ESR), and PL-related surface temperature reduction was proposed. The experimental thermal evaluation testing on three PbS QDs sample with different fluorescent properties and their corresponding non-fluorescent samples was performed to assess the accuracy of the proposed predictive model and evaluate the impact of fluorescent/optical properties on their cooling potential. The validated model was then used to optimize the fluorescent cooling potential for QDs samples with different fluorescent/optical properties. According to the model results, surface temperature reduction potential through PL effect demonstrates its highest value for QDs with solar absorption and QY near to unity, and λAE at around 1300 nm. QDs coatings with the optimal solar absorption, QY, and λAE showed up to 35 °C lower surface temperature than their corresponding non-fluorescent reference sample in a typical sunny day in Sydney. The maximum fluorescence contribution (Effective solar reflection (ESR)- Solar reflection (R)) is also estimated to be 0.44 for the fluorescent material with optimal optical and fluorescent property. Results of this study will support the next phase of research on fluorescent cooling. Urban overheating mitigation Fluorescent cooling Quantum dots (QDs) Tuneable thermo-optical properties Huang, Shujuan verfasserin aut Valenta, Jan verfasserin aut Santamouris, Mat verfasserin aut Enthalten in Solar energy Amsterdam [u.a.] : Elsevier Science, 1957 238, Seite 272-279 Online-Ressource (DE-627)320525597 (DE-600)2015126-3 (DE-576)096806648 1471-1257 nnns volume:238 pages:272-279 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 238 272-279
spelling	10.1016/j.solener.2022.04.026 doi (DE-627)ELV007853955 (ELSEVIER)S0038-092X(22)00274-2 DE-627 ger DE-627 rda eng 530 DE-600 52.56 bkl Garshasbi, Samira verfasserin aut Adjusting optical and fluorescent properties of quantum dots: Moving towards best optical heat-rejecting materials 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Quantum dots (QDs) coatings have recently attracted attentions as novel nano-scale fluorescent cooling materials with adjustable thermo-optical properties for urban overheating mitigation application. In this paper, a mathematical method for the prediction of impact of optical and fluorescent properties (i.e. absorption edge wavelength (λAE) and quantum yield (QY)) on fluorescent cooling indicators including re-emitted energy (QPL ), effective solar reflection (ESR), and PL-related surface temperature reduction was proposed. The experimental thermal evaluation testing on three PbS QDs sample with different fluorescent properties and their corresponding non-fluorescent samples was performed to assess the accuracy of the proposed predictive model and evaluate the impact of fluorescent/optical properties on their cooling potential. The validated model was then used to optimize the fluorescent cooling potential for QDs samples with different fluorescent/optical properties. According to the model results, surface temperature reduction potential through PL effect demonstrates its highest value for QDs with solar absorption and QY near to unity, and λAE at around 1300 nm. QDs coatings with the optimal solar absorption, QY, and λAE showed up to 35 °C lower surface temperature than their corresponding non-fluorescent reference sample in a typical sunny day in Sydney. The maximum fluorescence contribution (Effective solar reflection (ESR)- Solar reflection (R)) is also estimated to be 0.44 for the fluorescent material with optimal optical and fluorescent property. Results of this study will support the next phase of research on fluorescent cooling. Urban overheating mitigation Fluorescent cooling Quantum dots (QDs) Tuneable thermo-optical properties Huang, Shujuan verfasserin aut Valenta, Jan verfasserin aut Santamouris, Mat verfasserin aut Enthalten in Solar energy Amsterdam [u.a.] : Elsevier Science, 1957 238, Seite 272-279 Online-Ressource (DE-627)320525597 (DE-600)2015126-3 (DE-576)096806648 1471-1257 nnns volume:238 pages:272-279 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 238 272-279
allfields_unstemmed	10.1016/j.solener.2022.04.026 doi (DE-627)ELV007853955 (ELSEVIER)S0038-092X(22)00274-2 DE-627 ger DE-627 rda eng 530 DE-600 52.56 bkl Garshasbi, Samira verfasserin aut Adjusting optical and fluorescent properties of quantum dots: Moving towards best optical heat-rejecting materials 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Quantum dots (QDs) coatings have recently attracted attentions as novel nano-scale fluorescent cooling materials with adjustable thermo-optical properties for urban overheating mitigation application. In this paper, a mathematical method for the prediction of impact of optical and fluorescent properties (i.e. absorption edge wavelength (λAE) and quantum yield (QY)) on fluorescent cooling indicators including re-emitted energy (QPL ), effective solar reflection (ESR), and PL-related surface temperature reduction was proposed. The experimental thermal evaluation testing on three PbS QDs sample with different fluorescent properties and their corresponding non-fluorescent samples was performed to assess the accuracy of the proposed predictive model and evaluate the impact of fluorescent/optical properties on their cooling potential. The validated model was then used to optimize the fluorescent cooling potential for QDs samples with different fluorescent/optical properties. According to the model results, surface temperature reduction potential through PL effect demonstrates its highest value for QDs with solar absorption and QY near to unity, and λAE at around 1300 nm. QDs coatings with the optimal solar absorption, QY, and λAE showed up to 35 °C lower surface temperature than their corresponding non-fluorescent reference sample in a typical sunny day in Sydney. The maximum fluorescence contribution (Effective solar reflection (ESR)- Solar reflection (R)) is also estimated to be 0.44 for the fluorescent material with optimal optical and fluorescent property. Results of this study will support the next phase of research on fluorescent cooling. Urban overheating mitigation Fluorescent cooling Quantum dots (QDs) Tuneable thermo-optical properties Huang, Shujuan verfasserin aut Valenta, Jan verfasserin aut Santamouris, Mat verfasserin aut Enthalten in Solar energy Amsterdam [u.a.] : Elsevier Science, 1957 238, Seite 272-279 Online-Ressource (DE-627)320525597 (DE-600)2015126-3 (DE-576)096806648 1471-1257 nnns volume:238 pages:272-279 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 238 272-279
allfieldsGer	10.1016/j.solener.2022.04.026 doi (DE-627)ELV007853955 (ELSEVIER)S0038-092X(22)00274-2 DE-627 ger DE-627 rda eng 530 DE-600 52.56 bkl Garshasbi, Samira verfasserin aut Adjusting optical and fluorescent properties of quantum dots: Moving towards best optical heat-rejecting materials 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Quantum dots (QDs) coatings have recently attracted attentions as novel nano-scale fluorescent cooling materials with adjustable thermo-optical properties for urban overheating mitigation application. In this paper, a mathematical method for the prediction of impact of optical and fluorescent properties (i.e. absorption edge wavelength (λAE) and quantum yield (QY)) on fluorescent cooling indicators including re-emitted energy (QPL ), effective solar reflection (ESR), and PL-related surface temperature reduction was proposed. The experimental thermal evaluation testing on three PbS QDs sample with different fluorescent properties and their corresponding non-fluorescent samples was performed to assess the accuracy of the proposed predictive model and evaluate the impact of fluorescent/optical properties on their cooling potential. The validated model was then used to optimize the fluorescent cooling potential for QDs samples with different fluorescent/optical properties. According to the model results, surface temperature reduction potential through PL effect demonstrates its highest value for QDs with solar absorption and QY near to unity, and λAE at around 1300 nm. QDs coatings with the optimal solar absorption, QY, and λAE showed up to 35 °C lower surface temperature than their corresponding non-fluorescent reference sample in a typical sunny day in Sydney. The maximum fluorescence contribution (Effective solar reflection (ESR)- Solar reflection (R)) is also estimated to be 0.44 for the fluorescent material with optimal optical and fluorescent property. Results of this study will support the next phase of research on fluorescent cooling. Urban overheating mitigation Fluorescent cooling Quantum dots (QDs) Tuneable thermo-optical properties Huang, Shujuan verfasserin aut Valenta, Jan verfasserin aut Santamouris, Mat verfasserin aut Enthalten in Solar energy Amsterdam [u.a.] : Elsevier Science, 1957 238, Seite 272-279 Online-Ressource (DE-627)320525597 (DE-600)2015126-3 (DE-576)096806648 1471-1257 nnns volume:238 pages:272-279 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 238 272-279
allfieldsSound	10.1016/j.solener.2022.04.026 doi (DE-627)ELV007853955 (ELSEVIER)S0038-092X(22)00274-2 DE-627 ger DE-627 rda eng 530 DE-600 52.56 bkl Garshasbi, Samira verfasserin aut Adjusting optical and fluorescent properties of quantum dots: Moving towards best optical heat-rejecting materials 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Quantum dots (QDs) coatings have recently attracted attentions as novel nano-scale fluorescent cooling materials with adjustable thermo-optical properties for urban overheating mitigation application. In this paper, a mathematical method for the prediction of impact of optical and fluorescent properties (i.e. absorption edge wavelength (λAE) and quantum yield (QY)) on fluorescent cooling indicators including re-emitted energy (QPL ), effective solar reflection (ESR), and PL-related surface temperature reduction was proposed. The experimental thermal evaluation testing on three PbS QDs sample with different fluorescent properties and their corresponding non-fluorescent samples was performed to assess the accuracy of the proposed predictive model and evaluate the impact of fluorescent/optical properties on their cooling potential. The validated model was then used to optimize the fluorescent cooling potential for QDs samples with different fluorescent/optical properties. According to the model results, surface temperature reduction potential through PL effect demonstrates its highest value for QDs with solar absorption and QY near to unity, and λAE at around 1300 nm. QDs coatings with the optimal solar absorption, QY, and λAE showed up to 35 °C lower surface temperature than their corresponding non-fluorescent reference sample in a typical sunny day in Sydney. The maximum fluorescence contribution (Effective solar reflection (ESR)- Solar reflection (R)) is also estimated to be 0.44 for the fluorescent material with optimal optical and fluorescent property. Results of this study will support the next phase of research on fluorescent cooling. Urban overheating mitigation Fluorescent cooling Quantum dots (QDs) Tuneable thermo-optical properties Huang, Shujuan verfasserin aut Valenta, Jan verfasserin aut Santamouris, Mat verfasserin aut Enthalten in Solar energy Amsterdam [u.a.] : Elsevier Science, 1957 238, Seite 272-279 Online-Ressource (DE-627)320525597 (DE-600)2015126-3 (DE-576)096806648 1471-1257 nnns volume:238 pages:272-279 GBV_USEFLAG_U SYSFLAG_U GBV_ELV GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 52.56 Regenerative Energieformen alternative Energieformen AR 238 272-279
language	English
source	Enthalten in Solar energy 238, Seite 272-279 volume:238 pages:272-279
sourceStr	Enthalten in Solar energy 238, Seite 272-279 volume:238 pages:272-279
format_phy_str_mv	Article
bklname	Regenerative Energieformen alternative Energieformen
institution	findex.gbv.de
topic_facet	Urban overheating mitigation Fluorescent cooling Quantum dots (QDs) Tuneable thermo-optical properties
dewey-raw	530
isfreeaccess_bool	false
container_title	Solar energy
authorswithroles_txt_mv	Garshasbi, Samira @@aut@@ Huang, Shujuan @@aut@@ Valenta, Jan @@aut@@ Santamouris, Mat @@aut@@
publishDateDaySort_date	2022-01-01T00:00:00Z
hierarchy_top_id	320525597
dewey-sort	3530
id	ELV007853955
language_de	englisch
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QDs coatings with the optimal solar absorption, QY, and λAE showed up to 35 °C lower surface temperature than their corresponding non-fluorescent reference sample in a typical sunny day in Sydney. The maximum fluorescence contribution (Effective solar reflection (ESR)- Solar reflection (R)) is also estimated to be 0.44 for the fluorescent material with optimal optical and fluorescent property. 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author	Garshasbi, Samira
spellingShingle	Garshasbi, Samira ddc 530 bkl 52.56 misc Urban overheating mitigation misc Fluorescent cooling misc Quantum dots (QDs) misc Tuneable thermo-optical properties Adjusting optical and fluorescent properties of quantum dots: Moving towards best optical heat-rejecting materials
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topic_title	530 DE-600 52.56 bkl Adjusting optical and fluorescent properties of quantum dots: Moving towards best optical heat-rejecting materials Urban overheating mitigation Fluorescent cooling Quantum dots (QDs) Tuneable thermo-optical properties
topic	ddc 530 bkl 52.56 misc Urban overheating mitigation misc Fluorescent cooling misc Quantum dots (QDs) misc Tuneable thermo-optical properties
topic_unstemmed	ddc 530 bkl 52.56 misc Urban overheating mitigation misc Fluorescent cooling misc Quantum dots (QDs) misc Tuneable thermo-optical properties
topic_browse	ddc 530 bkl 52.56 misc Urban overheating mitigation misc Fluorescent cooling misc Quantum dots (QDs) misc Tuneable thermo-optical properties
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title	Adjusting optical and fluorescent properties of quantum dots: Moving towards best optical heat-rejecting materials
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title_full	Adjusting optical and fluorescent properties of quantum dots: Moving towards best optical heat-rejecting materials
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author_browse	Garshasbi, Samira Huang, Shujuan Valenta, Jan Santamouris, Mat
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title_sort	adjusting optical and fluorescent properties of quantum dots: moving towards best optical heat-rejecting materials
title_auth	Adjusting optical and fluorescent properties of quantum dots: Moving towards best optical heat-rejecting materials
abstract	Quantum dots (QDs) coatings have recently attracted attentions as novel nano-scale fluorescent cooling materials with adjustable thermo-optical properties for urban overheating mitigation application. In this paper, a mathematical method for the prediction of impact of optical and fluorescent properties (i.e. absorption edge wavelength (λAE) and quantum yield (QY)) on fluorescent cooling indicators including re-emitted energy (QPL ), effective solar reflection (ESR), and PL-related surface temperature reduction was proposed. The experimental thermal evaluation testing on three PbS QDs sample with different fluorescent properties and their corresponding non-fluorescent samples was performed to assess the accuracy of the proposed predictive model and evaluate the impact of fluorescent/optical properties on their cooling potential. The validated model was then used to optimize the fluorescent cooling potential for QDs samples with different fluorescent/optical properties. According to the model results, surface temperature reduction potential through PL effect demonstrates its highest value for QDs with solar absorption and QY near to unity, and λAE at around 1300 nm. QDs coatings with the optimal solar absorption, QY, and λAE showed up to 35 °C lower surface temperature than their corresponding non-fluorescent reference sample in a typical sunny day in Sydney. The maximum fluorescence contribution (Effective solar reflection (ESR)- Solar reflection (R)) is also estimated to be 0.44 for the fluorescent material with optimal optical and fluorescent property. Results of this study will support the next phase of research on fluorescent cooling.
abstractGer	Quantum dots (QDs) coatings have recently attracted attentions as novel nano-scale fluorescent cooling materials with adjustable thermo-optical properties for urban overheating mitigation application. In this paper, a mathematical method for the prediction of impact of optical and fluorescent properties (i.e. absorption edge wavelength (λAE) and quantum yield (QY)) on fluorescent cooling indicators including re-emitted energy (QPL ), effective solar reflection (ESR), and PL-related surface temperature reduction was proposed. The experimental thermal evaluation testing on three PbS QDs sample with different fluorescent properties and their corresponding non-fluorescent samples was performed to assess the accuracy of the proposed predictive model and evaluate the impact of fluorescent/optical properties on their cooling potential. The validated model was then used to optimize the fluorescent cooling potential for QDs samples with different fluorescent/optical properties. According to the model results, surface temperature reduction potential through PL effect demonstrates its highest value for QDs with solar absorption and QY near to unity, and λAE at around 1300 nm. QDs coatings with the optimal solar absorption, QY, and λAE showed up to 35 °C lower surface temperature than their corresponding non-fluorescent reference sample in a typical sunny day in Sydney. The maximum fluorescence contribution (Effective solar reflection (ESR)- Solar reflection (R)) is also estimated to be 0.44 for the fluorescent material with optimal optical and fluorescent property. Results of this study will support the next phase of research on fluorescent cooling.
abstract_unstemmed	Quantum dots (QDs) coatings have recently attracted attentions as novel nano-scale fluorescent cooling materials with adjustable thermo-optical properties for urban overheating mitigation application. In this paper, a mathematical method for the prediction of impact of optical and fluorescent properties (i.e. absorption edge wavelength (λAE) and quantum yield (QY)) on fluorescent cooling indicators including re-emitted energy (QPL ), effective solar reflection (ESR), and PL-related surface temperature reduction was proposed. The experimental thermal evaluation testing on three PbS QDs sample with different fluorescent properties and their corresponding non-fluorescent samples was performed to assess the accuracy of the proposed predictive model and evaluate the impact of fluorescent/optical properties on their cooling potential. The validated model was then used to optimize the fluorescent cooling potential for QDs samples with different fluorescent/optical properties. According to the model results, surface temperature reduction potential through PL effect demonstrates its highest value for QDs with solar absorption and QY near to unity, and λAE at around 1300 nm. QDs coatings with the optimal solar absorption, QY, and λAE showed up to 35 °C lower surface temperature than their corresponding non-fluorescent reference sample in a typical sunny day in Sydney. The maximum fluorescence contribution (Effective solar reflection (ESR)- Solar reflection (R)) is also estimated to be 0.44 for the fluorescent material with optimal optical and fluorescent property. Results of this study will support the next phase of research on fluorescent cooling.
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title_short	Adjusting optical and fluorescent properties of quantum dots: Moving towards best optical heat-rejecting materials
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up_date	2024-07-06T17:41:39.966Z
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Adjusting optical and fluorescent properties of quantum dots: Moving towards best optical heat-rejecting materials

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