Synthesis of all-inorganic CsPb2Br5 perovskite and determination of its luminescence mechanism

doi:10.1039/c7ra10693a

	Synthesis of all-inorganic CsPb2Br5 perovskite and determination of its luminescence mechanism
	Li, Jing 1; Zhang, Huijie 1; Wang, Song 2; Long, Debing 1; Li, Mingkai 1; Guo, Yizhong 1; Zhong, Zhicheng 1; Wu, Kaifeng 3; Wang, Duofa 1; Zhang, Tianjin 1
刊名	RSC ADVANCES
	2017
卷号	7 期号:85 页码:54002-54007
ISSN号	2046-2069
DOI	10.1039/c7ra10693a
文献子类	Article
英文摘要	All-inorganic cesium lead halide perovskite materials, such as CsPbBr3 and CsPb2Br5, have drawn immense attention recently due to their potential applications in optoelectronics. However, unlike the extensively-studied CsPbBr3, many of the fundamental properties of CsPb2Br5 remain unclear, such as its electronic structure and photoluminescence (PL) mechanism. In this work, we developed a novel environmentally friendly chemical method to synthesize CsPb2Br5, where only water and ethanol were used as solvents. The optical property and electronic structure of CsPb2Br5 were then examined both experimentally and theoretically. For the first time we found that the band-edge emission of CsPb2Br5 was not in the visible range as reported in the literature but rather located in the ultraviolet range. By monitoring the PL property during phase conversion between CsPb2Br5 and CsPbBr3, we propose that previously-reported visible emission might be due to the involvement of CsPbBr3 during sample preparation. Overall, this study presents a novel green method for the preparation of CsPb2Br5 and clarifies the optical properties and electronic structure of CsPb2Br5.
WOS关键词	LIGHT-EMITTING-DIODES ; SOLAR-CELLS ; HALIDE PEROVSKITES ; STABILITY ; EFFICIENT ; NANOCRYSTALS ; TRANSPORT ; EMISSION ; BROMIDE ; CSPBX3
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000416831000041
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/168382]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Wang, Duofa; Zhang, Tianjin
作者单位	1.Hubei Univ, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Minist Educ,Dept Mat Sci & Engn, Key Lab Green Preparat & Applicat Mat,Hubei Prov, Wuhan 430062, Hubei, Peoples R China 2.Hubei Univ Arts & Sci, Hubei Key Lab Low Dimens Optoelect Mat & Devices, Xiangyang 441053, Hubei, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, 457 Zhongshan Rd, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Li, Jing,Zhang, Huijie,Wang, Song,et al. Synthesis of all-inorganic CsPb2Br5 perovskite and determination of its luminescence mechanism[J]. RSC ADVANCES,2017,7(85):54002-54007.
APA	Li, Jing.,Zhang, Huijie.,Wang, Song.,Long, Debing.,Li, Mingkai.,...&Zhang, Tianjin.(2017).Synthesis of all-inorganic CsPb2Br5 perovskite and determination of its luminescence mechanism.RSC ADVANCES,7(85),54002-54007.
MLA	Li, Jing,et al."Synthesis of all-inorganic CsPb2Br5 perovskite and determination of its luminescence mechanism".RSC ADVANCES 7.85(2017):54002-54007.