Direct drop-casting synthesis of all-inorganic lead and lead-free halide perovskite microcrystals for high-performance photodetectors

doi:10.1007/s12274-021-3907-9

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	Direct drop-casting synthesis of all-inorganic lead and lead-free halide perovskite microcrystals for high-performance photodetectors
	Z. Lai; Y. Meng; F. Wang; X. Bu; W. Wang; P. Xie; W. Wang; C. Liu; S. Yip and J. C. Ho
	2022
发表期刊	Nano Research
ISSN	19980124
卷号	15 期号:4 页码:3621-3627
摘要	Due to the exciting photoelectric properties, better stability, and environmental-friendly nature, all-inorganic halide perovskites (AIHPs), especially the lead-free perovskites, have attracted worldwide attention. However, the film quality of AIHPs fabricated by typical spin-coating and subsequent high-temperature annealing is still not satisfactory, restricting their further development. Herein, we demonstrate a simple low-temperature solution-processed drop-casting method to achieve highly-crystalline cubic CsPbBr3 and lead-free layer-structured Cs3Sb2I9 microcrystals (MCs). This drop-casting technique not only consumes the less amount of precursor solution but also eliminates the high-temperature annealing as compared with those of spin coating. When these MCs are configured into photodetectors, they exhibit superior device performance, which is in distinct contrast to the one of spin-coated counterparts. Specifically, the responsivity of CsPbBr3 MCs is found to be as large as 8,990 mA/W, being 13 times larger than the spin-coated films and even better than many state-of-the-art solution-processed AIHPs devices. This device performance enhancement is attributed to the better film quality and phase purity obtained by the drop-casting method. All these results can evidently fill the "technology gap" for further enhancing the material quality of solution-processed AIHPs and breaking down the barriers that hinder the development of AIHPs based optoelectronic devices. [Figure not available: see fulltext.] 2021, Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature.￥internal-pdf://0696041142/Direct drop-casting synthesis of all-inorganic.pdf￥10.1007/s12274-021-3907-9￥https://link.springer.com/content/pdf/10.1007/s12274-021-3907-9.pdf￥ei
DOI	10.1007/s12274-021-3907-9
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/66564
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	Z. Lai,Y. Meng,F. Wang,et al. Direct drop-casting synthesis of all-inorganic lead and lead-free halide perovskite microcrystals for high-performance photodetectors[J]. Nano Research,2022,15(4):3621-3627.
APA	Z. Lai.,Y. Meng.,F. Wang.,X. Bu.,W. Wang.,...&S. Yip and J. C. Ho.(2022).Direct drop-casting synthesis of all-inorganic lead and lead-free halide perovskite microcrystals for high-performance photodetectors.Nano Research,15(4),3621-3627.
MLA	Z. Lai,et al."Direct drop-casting synthesis of all-inorganic lead and lead-free halide perovskite microcrystals for high-performance photodetectors".Nano Research 15.4(2022):3621-3627.

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