Precise Composition Tailoring of Mixed-Cation Hybrid Perovskites for   Efficient Solar Cells by Mixture Design Methods

doi:10.1021/acsnano.7b02867

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	Precise Composition Tailoring of Mixed-Cation Hybrid Perovskites for Efficient Solar Cells by Mixture Design Methods
	Li, Liang ; Liu, Na ; Xu, Ziqi ; Chen, Qi ; Wang, Xindong ; Zhou, Huanping
刊名	ACS NANO
	2017
关键词	mixture design mixed cation composition perovskite solar cells bandgap structure HALIDE PEROVSKITES LEAD IODIDE INORGANIC PEROVSKITE SINGLE-CRYSTALS PERFORMANCE FORMAMIDINIUM STABILIZATION PHOTOVOLTAICS TRIHALIDE ABSORBER
DOI	10.1021/acsnano.7b02867
英文摘要	Mixed anion/cation perovskites absorber has been recently implemented to construct highly efficient single junction solar cells and tandem devices. However, considerable efforts are still required to map the composition property relationship of the mixed perovskites absorber, which is essential to facilitate device design. Here we report the intensive exploration of mixed-cation perovskites in their compositional space with the assistance of a rational mixture design (MD) methods. Different from the previous linear search of the cation ratios, it is found that by employing the MD methods, the ternary composition can be tuned simultaneously following simplex lattice designs or simplex-centroid designs, which enable significantly reduced experiment/sampling size to unveil the composition property relationship for mixed perovskite materials and to boost the resultant device efficiency. We illustrated the composition property relationship of the mixed perovskites in multidimension and achieved an optimized power conversion efficiency of 20.99% in the corresponding device. Moreover, the method is demonstrated to be feasible to help adjust the bandgap through rational materials design, which can be further extended to other materials systems, not limited in polycrystalline perovskites films for photovoltaic applications only.; National Natural Science Foundation of China [51672008, U1508202, 51673025]; National Key Research and Development Program of China [2016YFB0700700]; Young Talent Thousand Program; ENN Group; Beijing Key Laboratory; SCI(E); ARTICLE; 9; 8804-8813; 11
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/470980]
专题	工学院
推荐引用方式 GB/T 7714	Li, Liang,Liu, Na,Xu, Ziqi,et al. Precise Composition Tailoring of Mixed-Cation Hybrid Perovskites for Efficient Solar Cells by Mixture Design Methods[J]. ACS NANO,2017.
APA	Li, Liang,Liu, Na,Xu, Ziqi,Chen, Qi,Wang, Xindong,&Zhou, Huanping.(2017).Precise Composition Tailoring of Mixed-Cation Hybrid Perovskites for Efficient Solar Cells by Mixture Design Methods.ACS NANO.
MLA	Li, Liang,et al."Precise Composition Tailoring of Mixed-Cation Hybrid Perovskites for Efficient Solar Cells by Mixture Design Methods".ACS NANO (2017).