Hard and soft Lewis-base behavior for efficient and stable CsPbBr3 perovskite light-emitting diodes

All-inorganic CsPbBr3 perovskite is an attractive emission material for high-stability perovskite light-emitting diodes (PeLEDs), due to the high thermal and chemical stability. However, the external quantum efficiencies (EQEs) of CsPbBr3 based PeLEDs are still far behind their organic–inorganic con...
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Autor*in:	Sun Changjiu [verfasserIn] Wei Junli [verfasserIn] Zhao Jian [verfasserIn] Jiang Yuanzhi [verfasserIn] Wang Yilong [verfasserIn] Hu Haiqing [verfasserIn] Wang Xin [verfasserIn] Zhang Yongqin [verfasserIn] Yuan Mingjian [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	all-inorganic perovskite cspbbr3 lewis base perovskite light-emitting diodes

Übergeordnetes Werk:	In: Nanophotonics - De Gruyter, 2016, 10(2021), 8, Seite 2157-2166
Übergeordnetes Werk:	volume:10 ; year:2021 ; number:8 ; pages:2157-2166

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1515/nanoph-2021-0003

Katalog-ID:	DOAJ026766671

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520			\|a All-inorganic CsPbBr3 perovskite is an attractive emission material for high-stability perovskite light-emitting diodes (PeLEDs), due to the high thermal and chemical stability. However, the external quantum efficiencies (EQEs) of CsPbBr3 based PeLEDs are still far behind their organic–inorganic congeners. Massive defect states on the surface of CsPbBr3 perovskite grains should be the main reason. Lewis base additives have been widely used to passivate surface defects. However, systematic investigations which relate to improving the passivation effect via rational molecule design are still lacking. Here, we demonstrate that the CsPbBr3 film’s optical and electrical properties can be significantly boosted by tailoring the hardness–softness of the Lewis base additives. Three carboxylate Lewis bases with different tail groups are selected to in-situ passivate CsPbBr3 perovskite films. Our research indicates that 4-(trifluoromethyl) benzoate acid anion (TBA−) with the powerful electron-withdrawing group trifluoromethyl and benzene ring possesses the softest COO− bonding head. TBA− thus acts as a soft Lewis base and possesses a robust combination with unsaturated lead atoms caused by halogen vacancies. Based on this, the all-inorganic CsPbBr3 PeLEDs with a maximum EQE up to 16.75% and a half-lifetime over 129 h at an initial brightness of 100 cd m−2 is thus delivered.
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spelling	10.1515/nanoph-2021-0003 doi (DE-627)DOAJ026766671 (DE-599)DOAJ4900d1b8ae314e1ca61773ae8ab50ab8 DE-627 ger DE-627 rakwb eng QC1-999 Sun Changjiu verfasserin aut Hard and soft Lewis-base behavior for efficient and stable CsPbBr3 perovskite light-emitting diodes 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier All-inorganic CsPbBr3 perovskite is an attractive emission material for high-stability perovskite light-emitting diodes (PeLEDs), due to the high thermal and chemical stability. However, the external quantum efficiencies (EQEs) of CsPbBr3 based PeLEDs are still far behind their organic–inorganic congeners. Massive defect states on the surface of CsPbBr3 perovskite grains should be the main reason. Lewis base additives have been widely used to passivate surface defects. However, systematic investigations which relate to improving the passivation effect via rational molecule design are still lacking. Here, we demonstrate that the CsPbBr3 film’s optical and electrical properties can be significantly boosted by tailoring the hardness–softness of the Lewis base additives. Three carboxylate Lewis bases with different tail groups are selected to in-situ passivate CsPbBr3 perovskite films. Our research indicates that 4-(trifluoromethyl) benzoate acid anion (TBA−) with the powerful electron-withdrawing group trifluoromethyl and benzene ring possesses the softest COO− bonding head. TBA− thus acts as a soft Lewis base and possesses a robust combination with unsaturated lead atoms caused by halogen vacancies. Based on this, the all-inorganic CsPbBr3 PeLEDs with a maximum EQE up to 16.75% and a half-lifetime over 129 h at an initial brightness of 100 cd m−2 is thus delivered. all-inorganic perovskite cspbbr3 lewis base perovskite light-emitting diodes Physics Wei Junli verfasserin aut Zhao Jian verfasserin aut Jiang Yuanzhi verfasserin aut Wang Yilong verfasserin aut Hu Haiqing verfasserin aut Wang Xin verfasserin aut Zhang Yongqin verfasserin aut Yuan Mingjian verfasserin aut In Nanophotonics De Gruyter, 2016 10(2021), 8, Seite 2157-2166 (DE-627)720169909 (DE-600)2674162-3 21928614 nnns volume:10 year:2021 number:8 pages:2157-2166 https://doi.org/10.1515/nanoph-2021-0003 kostenfrei https://doaj.org/article/4900d1b8ae314e1ca61773ae8ab50ab8 kostenfrei https://doi.org/10.1515/nanoph-2021-0003 kostenfrei https://doaj.org/toc/2192-8614 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 10 2021 8 2157-2166
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TBA− thus acts as a soft Lewis base and possesses a robust combination with unsaturated lead atoms caused by halogen vacancies. 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callnumber-first	Q - Science
author	Sun Changjiu
spellingShingle	Sun Changjiu misc QC1-999 misc all-inorganic perovskite misc cspbbr3 misc lewis base misc perovskite light-emitting diodes misc Physics Hard and soft Lewis-base behavior for efficient and stable CsPbBr3 perovskite light-emitting diodes
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topic_title	QC1-999 Hard and soft Lewis-base behavior for efficient and stable CsPbBr3 perovskite light-emitting diodes all-inorganic perovskite cspbbr3 lewis base perovskite light-emitting diodes
topic	misc QC1-999 misc all-inorganic perovskite misc cspbbr3 misc lewis base misc perovskite light-emitting diodes misc Physics
topic_unstemmed	misc QC1-999 misc all-inorganic perovskite misc cspbbr3 misc lewis base misc perovskite light-emitting diodes misc Physics
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title	Hard and soft Lewis-base behavior for efficient and stable CsPbBr3 perovskite light-emitting diodes
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title_full	Hard and soft Lewis-base behavior for efficient and stable CsPbBr3 perovskite light-emitting diodes
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title_sort	hard and soft lewis-base behavior for efficient and stable cspbbr3 perovskite light-emitting diodes
callnumber	QC1-999
title_auth	Hard and soft Lewis-base behavior for efficient and stable CsPbBr3 perovskite light-emitting diodes
abstract	All-inorganic CsPbBr3 perovskite is an attractive emission material for high-stability perovskite light-emitting diodes (PeLEDs), due to the high thermal and chemical stability. However, the external quantum efficiencies (EQEs) of CsPbBr3 based PeLEDs are still far behind their organic–inorganic congeners. Massive defect states on the surface of CsPbBr3 perovskite grains should be the main reason. Lewis base additives have been widely used to passivate surface defects. However, systematic investigations which relate to improving the passivation effect via rational molecule design are still lacking. Here, we demonstrate that the CsPbBr3 film’s optical and electrical properties can be significantly boosted by tailoring the hardness–softness of the Lewis base additives. Three carboxylate Lewis bases with different tail groups are selected to in-situ passivate CsPbBr3 perovskite films. Our research indicates that 4-(trifluoromethyl) benzoate acid anion (TBA−) with the powerful electron-withdrawing group trifluoromethyl and benzene ring possesses the softest COO− bonding head. TBA− thus acts as a soft Lewis base and possesses a robust combination with unsaturated lead atoms caused by halogen vacancies. Based on this, the all-inorganic CsPbBr3 PeLEDs with a maximum EQE up to 16.75% and a half-lifetime over 129 h at an initial brightness of 100 cd m−2 is thus delivered.
abstractGer	All-inorganic CsPbBr3 perovskite is an attractive emission material for high-stability perovskite light-emitting diodes (PeLEDs), due to the high thermal and chemical stability. However, the external quantum efficiencies (EQEs) of CsPbBr3 based PeLEDs are still far behind their organic–inorganic congeners. Massive defect states on the surface of CsPbBr3 perovskite grains should be the main reason. Lewis base additives have been widely used to passivate surface defects. However, systematic investigations which relate to improving the passivation effect via rational molecule design are still lacking. Here, we demonstrate that the CsPbBr3 film’s optical and electrical properties can be significantly boosted by tailoring the hardness–softness of the Lewis base additives. Three carboxylate Lewis bases with different tail groups are selected to in-situ passivate CsPbBr3 perovskite films. Our research indicates that 4-(trifluoromethyl) benzoate acid anion (TBA−) with the powerful electron-withdrawing group trifluoromethyl and benzene ring possesses the softest COO− bonding head. TBA− thus acts as a soft Lewis base and possesses a robust combination with unsaturated lead atoms caused by halogen vacancies. Based on this, the all-inorganic CsPbBr3 PeLEDs with a maximum EQE up to 16.75% and a half-lifetime over 129 h at an initial brightness of 100 cd m−2 is thus delivered.
abstract_unstemmed	All-inorganic CsPbBr3 perovskite is an attractive emission material for high-stability perovskite light-emitting diodes (PeLEDs), due to the high thermal and chemical stability. However, the external quantum efficiencies (EQEs) of CsPbBr3 based PeLEDs are still far behind their organic–inorganic congeners. Massive defect states on the surface of CsPbBr3 perovskite grains should be the main reason. Lewis base additives have been widely used to passivate surface defects. However, systematic investigations which relate to improving the passivation effect via rational molecule design are still lacking. Here, we demonstrate that the CsPbBr3 film’s optical and electrical properties can be significantly boosted by tailoring the hardness–softness of the Lewis base additives. Three carboxylate Lewis bases with different tail groups are selected to in-situ passivate CsPbBr3 perovskite films. Our research indicates that 4-(trifluoromethyl) benzoate acid anion (TBA−) with the powerful electron-withdrawing group trifluoromethyl and benzene ring possesses the softest COO− bonding head. TBA− thus acts as a soft Lewis base and possesses a robust combination with unsaturated lead atoms caused by halogen vacancies. Based on this, the all-inorganic CsPbBr3 PeLEDs with a maximum EQE up to 16.75% and a half-lifetime over 129 h at an initial brightness of 100 cd m−2 is thus delivered.
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title_short	Hard and soft Lewis-base behavior for efficient and stable CsPbBr3 perovskite light-emitting diodes
url	https://doi.org/10.1515/nanoph-2021-0003 https://doaj.org/article/4900d1b8ae314e1ca61773ae8ab50ab8 https://doaj.org/toc/2192-8614
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author2	Wei Junli Zhao Jian Jiang Yuanzhi Wang Yilong Hu Haiqing Wang Xin Zhang Yongqin Yuan Mingjian
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up_date	2024-07-03T22:49:41.547Z
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TBA− thus acts as a soft Lewis base and possesses a robust combination with unsaturated lead atoms caused by halogen vacancies. 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Hard and soft Lewis-base behavior for efficient and stable CsPbBr3 perovskite light-emitting diodes

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