南京大学陈尚尚团队开发出具有多功能聚富勒烯电子传输体的简化p-i-n钙钛矿太阳能电池。相关研究成果于2024年6月26日发表在《中国高分子科学杂志》。

在流行的p-i-n钙钛矿太阳能电池（PSCs）中，可溶液处理的富勒烯分子被广泛用作电子传输层（ETLs），但它们通常存在较差的均匀性和不期望的稳定性问题。此外，需要一个单独的浴库碱（BCP）层来阻挡空穴转移，这增加了制造的复杂性和成本。

该文中，研究人员通过开发一种新型聚合物ETL（命名为PFBCP）来解决这些限制，该ETL是通过将C60与BCP聚合而合成的。这种创新材料实现了高效的电子传输和空穴阻挡，同时其优异的均匀性最大限度地减少了界面复合并增强了稳定性。因此，使用PFBCP的叶片涂层PSCs实现了超过22%的高功率转换效率，并在光照1200小时后保持了91%的初始效率。

该发展不仅为商业上可行的PSCs铺平了道路，而且为未来的ETL设计开辟了途径，以实现更高效、更稳定的PSCs。

附：英文原文

Title: Simplified p-i-n Perovskite Solar Cells with a Multifunctional Polyfullerene Electron Transporter

Author: Fei-Fei Wang, Tian-Xiao Liu, Ze-Wei Cui, Ling-Yuan Wang, Yun-Jie Dou, Xiao-Yu Shi, Si-Wei Luo, Xiao-Dong Hu, Zhi-Jun Ren, Yang-Yang Liu, Yu Zhao, Shang-Shang Chen

Issue&Volume: 2024-06-26

Abstract: In prevailing p-i-n perovskite solar cells (PSCs), solution-processible fullerene molecules are widely used as electron-transporting layers (ETLs) but they typically suffer from poor uniformity and undesirable stability issues. Additionally, a separate bathocuproine (BCP) layer is needed to block hole transfer, increasing fabrication complexity and cost. Here, we address these limitations by developing a novel polymeric ETL (named PFBCP) synthesized by polymerizing C60 with BCP. This innovative material achieves both efficient electron transport and hole blocking, while its excellent uniformity minimizes interface recombination and enhances stability. Consequently, our blade-coated PSCs utilizing PFBCP achieve a high power conversion efficiency exceeding 22% and retain 91% of initial efficiency after 1200 h of light exposure. This development not only paves the way for commercially viable PSCs but also opens avenues for future ETL design to realize even more efficient and stable PSCs.

DOI: 10.1007/s10118-024-3156-y

Source: https://www.cjps.org/en/article/doi/10.1007/s10118-024-3156-y/