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Bi3+ doped 2D Ruddlesden-Popper organic lead halide perovskites
Lyu, Feiyi; Zheng, Xiaoqi; Wang, Yingqiao; Shi, Ruowen; Yang, Jianli; Li, Ziyue; Yu, Jiase; Lin, Bo-Lin
2019-07-14
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume7Issue:26Pages:15627
SubtypeArticle
AbstractTwo-dimensional Ruddlesden-Popper organic lead halide perovskites (2D RPPs) are semiconducting materials that have attracted widespread research attention recently. Fundamental understanding of heterovalent doping, a classical strategy to manipulate semiconductors ' optoelectronic and stability properties, is of great significance for their applications. Here we report the first series of heterovalent-doped 2D RPPs via Bi3+ doping for (BA)(2)(MA)(n-1)PbnI3n+1 (BA = n-C4H9NH3+; MA = CH3NH3+; n = 1, 2 and 3). Systematic experimental studies lead to the discovery of a positive correlation between the layer number and the doping level. Combined theoretical and experimental observations suggest the presence of two distinctive types of Bi3+ sites, a non-radiative recombination site at the organic/inorganic interface and a near-infrared (NIR) emission site at the middle Pb-I layer of the 3-layered 2D RPPs. Surprisingly, significantly improved photostability and environmental stability for the 2D RPPs were observed upon appropriate levels of Bi3+ doping. A fluorescence microscopy study suggests that a preferential doping-induced formation of 1L RPPs at the edges or cracks might act as a new mechanism to enhance the stability, providing an unprecedented strategy to improve the stability of perovskites and a new class of materials for device dimensionality engineering.
DOI10.1039/c9ta04145a
Language英语
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26979
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Lyu, Feiyi,Zheng, Xiaoqi,Wang, Yingqiao,et al. Bi3+ doped 2D Ruddlesden-Popper organic lead halide perovskites[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(26):15627.
APA Lyu, Feiyi.,Zheng, Xiaoqi.,Wang, Yingqiao.,Shi, Ruowen.,Yang, Jianli.,...&Lin, Bo-Lin.(2019).Bi3+ doped 2D Ruddlesden-Popper organic lead halide perovskites.JOURNAL OF MATERIALS CHEMISTRY A,7(26),15627.
MLA Lyu, Feiyi,et al."Bi3+ doped 2D Ruddlesden-Popper organic lead halide perovskites".JOURNAL OF MATERIALS CHEMISTRY A 7.26(2019):15627.
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