Ni2+ doping induced structural phase transition and photoluminescence enhancement of CsPbBr3

All-inorganic CsPbBr3 perovskites exhibit great potential in optoelectronic application due to their outstanding physical properties for optoelectronics. However, the relatively low luminescence efficiency of the bulk CsPbBr3 crystal hampers its further application. Here, we report a facile method t...

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Auteurs principaux:	Tao Chen, Ruliang Liu, Shumin Tang, Xiaonan Li, Shuming Ye, Xiaoxiao Duan, Rongfei Wang, Yanli Shi, Jie Yang, Feng Qiu, Yu Yang, Xiaoming Wen, Chong Wang
Format:	article
Langue:	EN
Publié:	AIP Publishing LLC 2021
Sujets:	Physics QC1-999
Accès en ligne:	https://doaj.org/article/70b6ba282f1c49189484ab833bb5e3f5
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spelling	oai:doaj.org-article:70b6ba282f1c49189484ab833bb5e3f52021-12-01T18:52:06ZNi2+ doping induced structural phase transition and photoluminescence enhancement of CsPbBr32158-322610.1063/5.0067153https://doaj.org/article/70b6ba282f1c49189484ab833bb5e3f52021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0067153https://doaj.org/toc/2158-3226All-inorganic CsPbBr3 perovskites exhibit great potential in optoelectronic application due to their outstanding physical properties for optoelectronics. However, the relatively low luminescence efficiency of the bulk CsPbBr3 crystal hampers its further application. Here, we report a facile method to enhance the optical efficiency of halide perovskite powder via doping the transition metal Ni ions. It is demonstrated that Ni doping results in the formation of the Cs(NiPb)Br3 alloy and also triggers the phase transition of CsPbBr3 from orthorhombic to cubic. Both the Cs(NiPb)Br3 alloy and cubic CsPbBr3 are found to contribute to the asymmetric photoluminescence (PL) spectra in the green-yellow light band. The splitting-peak fitting experiments for the overlapped PL spectrum based on the bi-Gaussian line model reveal that the Cs(NiPb)Br3 alloy dominates the contribution of the observed PL enhancement. The Ni2+ doping is also beneficial for optimizing the crystallinity of the CsPbBr3 perovskite, suppressing the nonradiative recombination and significantly enhancing the photoluminescence consequently. Our investigation provides a novel insight into the effect of environmentally friendly metal doping in perovskites.Tao ChenRuliang LiuShumin TangXiaonan LiShuming YeXiaoxiao DuanRongfei WangYanli ShiJie YangFeng QiuYu YangXiaoming WenChong WangAIP Publishing LLCarticlePhysicsQC1-999ENAIP Advances, Vol 11, Iss 11, Pp 115008-115008-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Tao Chen Ruliang Liu Shumin Tang Xiaonan Li Shuming Ye Xiaoxiao Duan Rongfei Wang Yanli Shi Jie Yang Feng Qiu Yu Yang Xiaoming Wen Chong Wang Ni2+ doping induced structural phase transition and photoluminescence enhancement of CsPbBr3
description	All-inorganic CsPbBr3 perovskites exhibit great potential in optoelectronic application due to their outstanding physical properties for optoelectronics. However, the relatively low luminescence efficiency of the bulk CsPbBr3 crystal hampers its further application. Here, we report a facile method to enhance the optical efficiency of halide perovskite powder via doping the transition metal Ni ions. It is demonstrated that Ni doping results in the formation of the Cs(NiPb)Br3 alloy and also triggers the phase transition of CsPbBr3 from orthorhombic to cubic. Both the Cs(NiPb)Br3 alloy and cubic CsPbBr3 are found to contribute to the asymmetric photoluminescence (PL) spectra in the green-yellow light band. The splitting-peak fitting experiments for the overlapped PL spectrum based on the bi-Gaussian line model reveal that the Cs(NiPb)Br3 alloy dominates the contribution of the observed PL enhancement. The Ni2+ doping is also beneficial for optimizing the crystallinity of the CsPbBr3 perovskite, suppressing the nonradiative recombination and significantly enhancing the photoluminescence consequently. Our investigation provides a novel insight into the effect of environmentally friendly metal doping in perovskites.
format	article
author	Tao Chen Ruliang Liu Shumin Tang Xiaonan Li Shuming Ye Xiaoxiao Duan Rongfei Wang Yanli Shi Jie Yang Feng Qiu Yu Yang Xiaoming Wen Chong Wang
author_facet	Tao Chen Ruliang Liu Shumin Tang Xiaonan Li Shuming Ye Xiaoxiao Duan Rongfei Wang Yanli Shi Jie Yang Feng Qiu Yu Yang Xiaoming Wen Chong Wang
author_sort	Tao Chen
title	Ni2+ doping induced structural phase transition and photoluminescence enhancement of CsPbBr3
title_short	Ni2+ doping induced structural phase transition and photoluminescence enhancement of CsPbBr3
title_full	Ni2+ doping induced structural phase transition and photoluminescence enhancement of CsPbBr3
title_fullStr	Ni2+ doping induced structural phase transition and photoluminescence enhancement of CsPbBr3
title_full_unstemmed	Ni2+ doping induced structural phase transition and photoluminescence enhancement of CsPbBr3
title_sort	ni2+ doping induced structural phase transition and photoluminescence enhancement of cspbbr3
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/70b6ba282f1c49189484ab833bb5e3f5
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_version_	1718404698270072832

Ni2+ doping induced structural phase transition and photoluminescence enhancement of CsPbBr3

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