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具有无机钙钛矿/碳量子点梯度异质结的高效稳定大面积钙钛矿太阳能电池

Efficient and Stable Large-Area Perovskite Solar Cells with Inorganic Perovskite/Carbon Quantum Dot-Graded Heterojunction.

作者信息

Sun Qiang, Shen Cai, Wang Deyu, Zhang Tao, Ban Huaxia, Shen Yan, Zhang Zhipan, Zhang Xiao-Li, Yang Guanjun, Wang Mingkui

机构信息

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.

Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, 1219 Zhongguan Road, Ningbo 315201, China.

出版信息

Research (Wash D C). 2021 Jul 12;2021:9845067. doi: 10.34133/2021/9845067. eCollection 2021.

DOI:10.34133/2021/9845067
PMID:34355192
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8292841/
Abstract

This work reports on a compositionally graded heterojunction for photovoltaic application by cooperating fluorine-doped carbon quantum dots (FCQDs in short) into the CsPbIBr inorganic perovskite layer. Using this CsPbIBr/FCQDs graded heterojunction in conjunction with low-temperature-processed carbon electrode, a power conversion efficiency of 13.53% for 1 cm all-inorganic perovskite solar cell can be achieved at AM 1.5G solar irradiation. To the best of our knowledge, this is one of the highest efficiency reported for carbon electrode based all-inorganic perovskite solar cells so far, and the first report of 1 cm carbon counter electrode based inorganic perovskite solar cell with PCE exceeding 13%. Moreover, the inorganic perovskite/carbon quantum dot graded heterojunction photovoltaics maintained over 90% of their initial efficiency after thermal aging at 85° for 1056 hours. This conception of constructing inorganic perovskite/FCQDs graded heterojunction offers a feasible pathway to develop efficient and stable photovoltaics for scale-up and practical applications.

摘要

这项工作报道了一种用于光伏应用的成分渐变异质结，通过将氟掺杂碳量子点（简称为FCQDs）引入CsPbIBr无机钙钛矿层中实现。将这种CsPbIBr/FCQDs渐变异质结与低温处理的碳电极相结合，在AM 1.5G太阳辐照下，1 cm的全无机钙钛矿太阳能电池可实现13.53%的功率转换效率。据我们所知，这是迄今为止基于碳电极的全无机钙钛矿太阳能电池所报道的最高效率之一，也是首次报道的基于1 cm碳对电极且功率转换效率超过13%的无机钙钛矿太阳能电池。此外，无机钙钛矿/碳量子点渐变异质结光伏器件在85°下热老化1056小时后，仍保持其初始效率的90%以上。构建无机钙钛矿/FCQDs渐变异质结的这一概念为开发高效且稳定的光伏器件以实现规模化和实际应用提供了一条可行的途径。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de24/8292841/9ca879ca3111/RESEARCH2021-9845067.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de24/8292841/e41660e13b5a/RESEARCH2021-9845067.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de24/8292841/1c1b31efe8e0/RESEARCH2021-9845067.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de24/8292841/792d5d2eb485/RESEARCH2021-9845067.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de24/8292841/d48bf1e94621/RESEARCH2021-9845067.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de24/8292841/9ca879ca3111/RESEARCH2021-9845067.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de24/8292841/e41660e13b5a/RESEARCH2021-9845067.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de24/8292841/1c1b31efe8e0/RESEARCH2021-9845067.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de24/8292841/792d5d2eb485/RESEARCH2021-9845067.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de24/8292841/d48bf1e94621/RESEARCH2021-9845067.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de24/8292841/9ca879ca3111/RESEARCH2021-9845067.005.jpg

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