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通过使用CsFA PbBrI光吸收剂提高碳基钙钛矿太阳能电池的热稳定性。

Enhancing the thermal stability of the carbon-based perovskite solar cells by using a Cs FA PbBr I light absorber.

作者信息

Wang Pengfei, Chai Nianyao, Wang Chang, Hua Jingchen, Huang Fuzhi, Peng Yong, Zhong Jie, Ku Zhiliang, Cheng Yi-Bing

机构信息

State Key Laboratory of Advanced Technologies for Materials Synthesis and Processing, International School of Materials Science and Engineering, Wuhan University of Technology 122 Luoshi Road Wuhan Hubei P. R. China

Hubei Key Laboratory of Low Dimensional Optoelectronic Material and Devices, Hubei University of Arts and Science 296 Longzhong Road Xiangyang Hubei Province P. R. China.

出版信息

RSC Adv. 2019 Apr 16;9(21):11877-11881. doi: 10.1039/c9ra00043g. eCollection 2019 Apr 12.

DOI:10.1039/c9ra00043g
PMID:35517030
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9063499/
Abstract

Despite the impressive photovoltaic performance with a power conversion efficiency beyond 23%, perovskite solar cells (PSCs) suffer from poor long-term stability, failing by far the market requirements. Although many efforts have been made towards improving the stability of PSCs, the thermal stability of PSCs with CHNHPbI as a perovskite and organic hole-transport material (HTM) remains a challenge. In this study, we employed the thermally stable (NH)CHPbI (FAPbI) as the light absorber for the carbon-based and HTM-free PSCs, which can be fabricated by screen printing. By introducing a certain amount of CsBr (10%) into PbI, we obtained a phase-stable Cs FA PbBr I perovskite by a "two-step" method and improved the device power conversion efficiency from 10.81% to 14.14%. Moreover, the as-prepared PSCs with mixed-cation perovskite showed an excellent long-term stability under constant heat (85 °C) and thermal cycling (-30 °C to 85 °C) conditions. These thermally stable and fully-printable PSCs would be of great significance for the development of low-cost photovoltaics.

摘要

尽管钙钛矿太阳能电池（PSCs）具有令人印象深刻的光伏性能，功率转换效率超过23%，但其长期稳定性较差，远远达不到市场要求。尽管人们为提高PSCs的稳定性做出了许多努力，但以CHNHPbI作为钙钛矿和有机空穴传输材料（HTM）的PSCs的热稳定性仍然是一个挑战。在本研究中，我们采用热稳定的（NH）CHPbI（FAPbI）作为碳基无HTM的PSCs的光吸收体，这种电池可以通过丝网印刷制备。通过向PbI中引入一定量的CsBr（10%），我们采用“两步”法获得了相稳定的Cs FA PbBr I钙钛矿，并将器件的功率转换效率从10.81%提高到了14.14%。此外，所制备的具有混合阳离子钙钛矿的PSCs在恒定加热（85°C）和热循环（-30°C至85°C）条件下表现出优异的长期稳定性。这些热稳定且可完全印刷的PSCs对于低成本光伏的发展具有重要意义。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c9a/9063499/aa70dbca06f3/c9ra00043g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c9a/9063499/38ea22b9280b/c9ra00043g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c9a/9063499/fd984784d76d/c9ra00043g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c9a/9063499/ec981877de06/c9ra00043g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c9a/9063499/eaf0125bfbe9/c9ra00043g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c9a/9063499/51e4e869de75/c9ra00043g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c9a/9063499/aa70dbca06f3/c9ra00043g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c9a/9063499/38ea22b9280b/c9ra00043g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c9a/9063499/fd984784d76d/c9ra00043g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c9a/9063499/ec981877de06/c9ra00043g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c9a/9063499/eaf0125bfbe9/c9ra00043g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c9a/9063499/51e4e869de75/c9ra00043g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c9a/9063499/aa70dbca06f3/c9ra00043g-f6.jpg

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