The Impact of Precursor Ratio on the Synthetic Production, Surface Chemistry, and Photovoltaic Performance of CsPbI3 Perovskite Quantum Dots

doi:10.1002/solr.202100090

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	The Impact of Precursor Ratio on the Synthetic Production, Surface Chemistry, and Photovoltaic Performance of CsPbI3 Perovskite Quantum Dots
	Y. Qian; Y. Shi; G. Shi; G. Shi; X. Zhang; L. Yuan; Q. Zhong; Y. Liu; Y. Wang; X. Ling; F. Li; M. Cao; S. Li; Q. Zhang; Z. Liu and W. Ma
	2021
Source Publication	Solar RRL
ISSN	2367198X
Volume	5 Issue:5
Abstract	Lead-halide perovskite quantum dots (QDs) have attracted substantial attention due to their great potential in solution-processed optoelectronic applications. The current synthetic method mostly relies on the binary-precursor strategy, which significantly restricts the reaction yield and elemental regulation, leading to extremely high material cost. Herein, a more versatile ternary-precursor method to investigate the effect of the precursor ratios on the synthetic production, surface chemistry, and photovoltaic performance of CsPbI3 QDs is explored. It is revealed that a decreased Pb/Cs feeding ratio can largely increase the reaction yield, whereas a reduced Pb/I ratio can improve the surface termination and optical properties of the resultaning CsPbI3 QDs. After rational tuning of the synthetic protocol, the reaction yield can be improved more than 7.5 times and the material cost can be reduced from 303 $ g1 to as low as 42 $ g1 compared to the conventional binary-precursor method. In addition, the photovoltaic device using these QDs exhibits an efficiency close to the reported state-of-the-art ones. It is believed that this scalable and low-cost preparation of CsPbI3 QDs provides new insight into the future commercialization of perovskite QDs-based optoelectronics. 2021 Wiley-VCH GmbH
DOI	10.1002/solr.202100090
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Indexed By	SCI ; EI
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Document Type	期刊论文
Identifier	http://ir.ciomp.ac.cn/handle/181722/65321
Collection	中国科学院长春光学精密机械与物理研究所
Recommended Citation GB/T 7714	Y. Qian,Y. Shi,G. Shi,et al. The Impact of Precursor Ratio on the Synthetic Production, Surface Chemistry, and Photovoltaic Performance of CsPbI3 Perovskite Quantum Dots[J]. Solar RRL,2021,5(5).
APA	Y. Qian.,Y. Shi.,G. Shi.,G. Shi.,X. Zhang.,...&Z. Liu and W. Ma.(2021).The Impact of Precursor Ratio on the Synthetic Production, Surface Chemistry, and Photovoltaic Performance of CsPbI3 Perovskite Quantum Dots.Solar RRL,5(5).
MLA	Y. Qian,et al."The Impact of Precursor Ratio on the Synthetic Production, Surface Chemistry, and Photovoltaic Performance of CsPbI3 Perovskite Quantum Dots".Solar RRL 5.5(2021).

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中国科学院长春光学精密机械与物理研究所