一种低温退火处理提高锡基钙钛矿太阳能电池效率的方法

doi:10.11896/cldb.23020020

材料导报

2023, Vol. 37

Issue (23): 23020020-5 https://doi.org/10.11896/cldb.23020020

无机非金属及其复合材料

一种低温退火处理提高锡基钙钛矿太阳能电池效率的方法

余海燕¹, 许方贤¹, 张帅^1,2,*, 袁宁一^1,2, 丁建宁^2,3

1 常州大学材料科学与工程学院,江苏常州 213161
2 江苏省光伏科学与工程协同创新中心,江苏常州 213161
3 扬州大学机械工程学院,江苏扬州 225000

A Method for Improving the Efficiency of Tin-based Perovskite Solar Cells by Low Temperature Annealing Treatment

YU Haiyan¹, XU Fangxian¹, ZHANG Shuai^1,2,*, YUAN Ningyi^1,2, DING Jianning^2,3

1 School of Materials Science and Engineering, Changzhou University,Changzhou 213161, Jiangsu, China
2 Jiangsu Photovoltaic Science and Engineering Collaborative Innovation Center, Changzhou 213161,Jiangsu, China
3 School of Mechanical Engineering, Yangzhou University,Yangzhou 225000,Jiangsu, China

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摘要钙钛矿光伏材料是目前最具发展前景的一类光伏材料,其铅基光伏器件的小面积认证效率已突破25%。然而,铅元素严重的毒性问题成为钙钛矿光伏实用化的重要阻碍之一。锡基钙钛矿材料因其低毒性和理想的光电性能被认为是最有可能替代铅基钙钛矿的候选材料。然而,锡基钙钛矿过快的晶体生长速率往往造成制备的薄膜质量欠佳,限制了锡基钙钛矿太阳能电池(TPSC)光电转换效率的提高。本研究在锡基钙钛矿薄膜的制备流程中引入了一种低温退火处理,即在钙钛矿薄膜旋涂结束后先进行低温退火再进行常规的90 ℃退火。该处理可在不改变钙钛矿晶型且不引入新的组分的前提下减缓钙钛矿薄膜结晶过程中的晶体生长,从而减少锡基钙钛矿薄膜表面的孔洞缺陷,提高薄膜的光捕获能力,降低器件内载流子复合。最优器件效率由3.65%提高到了5.38%,填充因子提高了29.84%。

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	余海燕
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关键词: 锡基钙钛矿太阳电池结晶控制低温退火缺陷钝化

Abstract: Iin-based perovskite has been considered as a candidate material to replace lead based perovskite because of its ideal band gap and high carrier efficiency. However, the rapid crystallization rate has been one of the obstacles limiting the photoelectric conversion of tin-based perovskite solar cells. A simple and low-cost method is used here. After spinning perovskite film is annealed at low temperature, and then annealed at 90 ℃. The objective is to slow down the growth of perovskite crystals in the process of crystallization without changing the type of perovskite crystals and introducing new components. By this method, the light absorption efficiency of perovskite thin films is improved, the surface hole defects are reduced, and the carrier recombination in the device is reduced. Equipment filling coefficient increased by 29.84%, efficiency increased from 3.645% to 5.38%.

Key words: tin-based perovskite solar cells crystallization controlled low temperature annealing defect passivation

出版日期: 2023-12-10 发布日期: 2023-12-08

ZTFLH:

O782

基金资助: 国家自然科学基金(51602031); 常州市科技支撑计划 (CE20215025)

通讯作者: * 张帅,常州大学材料科学与工程学院副教授、硕士研究生导师。2004年东南大学生物医学工程专业本科毕业,2007年东南大学生物医学工程专业硕士毕业,2011年大阪大学环境与能源专业博士毕业后到常州大学大学工作至今,目前主要从事纳米材料结构和功能,包括钙钛矿太阳电池、光催化剂和胶体粒子等方面的研究工作。以第一或通信作者身份在Journal of Power Sources、Solar Energy Materials and Solar Cells、Solar Energy、Functional Materials Letters、 Power Sources、Journal of Nanoparticle Research、ACS Applied Materials & Interfaces等SCI学术期刊发表研究论文10余篇。shuaizhang@cczu.edu.cn

作者简介: 余海燕,2016—2023年就读于常州大学,并于2020年7月获得学士学位,2023年6月获得硕士学位。在张帅教授的指导下进行研究。目前主要研究领域为钙钛矿太阳电池。

引用本文:

余海燕, 许方贤, 张帅, 袁宁一, 丁建宁. 一种低温退火处理提高锡基钙钛矿太阳能电池效率的方法[J]. 材料导报, 2023, 37(23): 23020020-5.
YU Haiyan, XU Fangxian, ZHANG Shuai, YUAN Ningyi, DING Jianning. A Method for Improving the Efficiency of Tin-based Perovskite Solar Cells by Low Temperature Annealing Treatment. Materials Reports, 2023, 37(23): 23020020-5.

链接本文:

http://www.mater-rep.com/CN/10.11896/cldb.23020020 或 http://www.mater-rep.com/CN/Y2023/V37/I23/23020020

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