Surface Ligands Management for Efficient CsPbBrI2 Perovskite Nanocrystal Solar Cells

doi:10.1002/solr.202000102

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	Surface Ligands Management for Efficient CsPbBrI2 Perovskite Nanocrystal Solar Cells
	C. M. Liu,Q. S. Zeng,Y. Zhao,Y. Yu,M. X. Yang,H. Gao,H. T. Wei and B. Yang
	2020
发表期刊	Solar Rrl
ISSN	2367-198X
卷号	4 期号:5 页码:9
摘要	CsPbX3 (X = Cl, Br, I) inorganic perovskite nanocrystals (PNCs) not only maintain the excellent optical and electronic properties of bulk material but also possess the features of nano-materials, such as tunable bandgap and easily processable colloidal ink, and enable them to be suitable for incorporation into various electronic devices and compatible with printing techniques. In contrast to the traditional II-VI and III-V semiconductor nanocrystals, the unique defect-tolerance effect makes the CsPbX3 PNCs promising materials for optoelectronic applications. The ligands around the PNCs play a critical role in the optoelectronic devices performance. Herein, through a facile hexane/ethyl acetate (MeOAc) solvent treatment method to control the ligand amount around CsPbBrI2 PNCs, the impact of ligand amount on the performance of solar cell is systematically demonstrated and the ligand amount is quantified precisely via the nuclear magnetic resonance internal standard method. Through controlling the ligand amount, the film quality, charge transfer, and transport properties are largely improved. In addition, a simple annealing process is applied to improve the interface properties by partial crystal fusion. As a consequence, the photovoltaic power conversion efficiency of 12.2% is achieved, which is the highest performance reported for mixed-halide CsPbX3 PNCs solar cells.
DOI	10.1002/solr.202000102
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收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64933
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	C. M. Liu,Q. S. Zeng,Y. Zhao,Y. Yu,M. X. Yang,H. Gao,H. T. Wei and B. Yang. Surface Ligands Management for Efficient CsPbBrI2 Perovskite Nanocrystal Solar Cells[J]. Solar Rrl,2020,4(5):9.
APA	C. M. Liu,Q. S. Zeng,Y. Zhao,Y. Yu,M. X. Yang,H. Gao,H. T. Wei and B. Yang.(2020).Surface Ligands Management for Efficient CsPbBrI2 Perovskite Nanocrystal Solar Cells.Solar Rrl,4(5),9.
MLA	C. M. Liu,Q. S. Zeng,Y. Zhao,Y. Yu,M. X. Yang,H. Gao,H. T. Wei and B. Yang."Surface Ligands Management for Efficient CsPbBrI2 Perovskite Nanocrystal Solar Cells".Solar Rrl 4.5(2020):9.

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