醋酸铅添加剂在印刷钙钛矿太阳能电池中的应用

doi:10.15541/jim20210538

无机材料学报 ›› 2022, Vol. 37 ›› Issue (2): 197-203.DOI: 10.15541/jim20210538

所属专题：【能源环境】钙钛矿；【能源环境】太阳能电池

醋酸铅添加剂在印刷钙钛矿太阳能电池中的应用

明月^1,2, 胡玥¹, 梅安意¹, 荣耀光¹, 韩宏伟¹

1.华中科技大学武汉光电国家研究中心, 武汉 430074;
2.深圳职业技术学院, 深圳 518055

收稿日期:2021-08-30 修回日期:2021-10-14 出版日期:2022-02-20 网络出版日期:2021-10-21
作者简介:明月(1995-), 女, 博士研究生. E-mail: yueming2021@szpt.edu.cn
基金资助:
国家自然科学基金面上项目(52172200, 22075094, 52172198)

Application of Lead Acetate Additive for Printable Perovskite Solar Cell

MING Yue^1,2, HU Yue¹, MEI Anyi¹, RONG Yaoguang¹, HAN Hongwei¹

1. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China;
2. Shenzhen Polytechnic, Shengzhen 518055, China

Received:2021-08-30 Revised:2021-10-14 Published:2022-02-20 Online:2021-10-21
Contact: RONG Yaoguang, associate professor. E-mail: ygrong@hust.edu.cn; HAN Hongwei, professor. E-mail: hongwei.han@mail.hust.edu.cn
About author:MING Yue(1995-), female, PhD candidate. E-mail: yueming2021@szpt.edu.cn
Supported by:
National Natural Science Foundation of China (52172200, 22075094, 52172198)

摘要/Abstract

摘要： 印刷钙钛矿太阳能电池采用无机介孔骨架包覆有机无机杂化钙钛矿材料的器件结构, 制备工艺简单, 原材料成本低廉, 且稳定性优异。然而, 在介孔骨架中均匀沉积高质量的钙钛矿材料存在一定困难。本研究通过在典型钙钛矿材料甲胺铅碘(MAPbI₃)前驱液中引入醋酸铅(Pb(Ac)₂)作为添加剂, 加快钙钛矿晶体的成核从而改善其在介孔骨架中的生长和填充。同时, Ac^-与MA⁺所形成的MAAc在热退火过程中逃逸可使得所沉积的钙钛矿光活性层中PbI₂略微过量, 达到钝化晶界的作用。添加摩尔分数1% Pb(Ac)₂的钙钛矿前驱液所制备的印刷钙钛矿太阳能电池的光电转换效率达到15.42%, 表明引入添加剂调控钙钛矿光活性层结晶质量是提升印刷钙钛矿太阳能电池性能的有效途径。

关键词: 有机无机杂化钙钛矿, 太阳能电池, 醋酸铅, 结晶调控, 成核生长

Abstract: Printable perovskite solar cells employ a device structure for which the organic-inorganic perovskite absorber is hosted by an inorganic mesoporous scaffold. Its advantages include simple fabrication process, low material cost and relatively high stability. However, it is challenging to homogeneously deposit high-quality perovskite crystals on the mesoporous scaffold. Herein, by incorporating lead acetate (Pb(Ac)₂) in the typical perovskite precursor, methylamine lead iodine (MAPbI₃), the crystal growth and pore-filling of the perovskite crystals in the mesoporous scaffold is improved by facilitating the crystal nucleation. Meanwhile, Ac^- and MA⁺ form MAAc which releases during thermal annealing process, resulting in excess PbI₂ in the perovskite layer which passivates the grain boundaries. By incorporating 1% molar ratio of Pb(Ac)₂ in the perovskite precursor, a power conversion efficiency of 15.42% is obtained for printable perovskite solar cells. This indicates that it is feasible to enhance the performance of printable perovskite solar cells by employing additives to tune the crystallization of the perovskite absorbers.

Key words: organic-inorganic perovskite, solar cell, lead acetate, crystallization regulation, nucleation crystal growth

中图分类号:

TQ174

明月, 胡玥, 梅安意, 荣耀光, 韩宏伟. 醋酸铅添加剂在印刷钙钛矿太阳能电池中的应用[J]. 无机材料学报, 2022, 37(2): 197-203.

MING Yue, HU Yue, MEI Anyi, RONG Yaoguang, HAN Hongwei. Application of Lead Acetate Additive for Printable Perovskite Solar Cell[J]. Journal of Inorganic Materials, 2022, 37(2): 197-203.

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醋酸铅添加剂在印刷钙钛矿太阳能电池中的应用

Application of Lead Acetate Additive for Printable Perovskite Solar Cell

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