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

IF 4.1 2区化学 Q2 POLYMER SCIENCE Chinese Journal of Polymer Science Pub Date : 2024-06-26 DOI:10.1007/s10118-024-3156-y

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

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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.

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带有多功能聚富勒烯电子传输器的简化 pi-i-n Perovskite 太阳能电池

在常用的 pi-i-n 包晶体太阳能电池 (PSC) 中，溶液可加工富勒烯分子被广泛用作电子传输层 (ETL)，但它们通常存在均匀性差和不理想的稳定性问题。此外，还需要单独的浴佛素（BCP）层来阻止空穴传输，从而增加了制造的复杂性和成本。在此，我们开发了一种新型聚合物 ETL（命名为 PFBCP），通过聚合 C60 与 BCP 合成，从而解决了这些局限性。这种创新材料既能实现高效的电子传输，又能阻挡空穴，同时其出色的均匀性最大程度地减少了界面重组，提高了稳定性。因此，我们利用 PFBCP 的叶片涂层 PSC 实现了超过 22% 的高功率转换效率，并在光照射 1200 小时后保持了 91% 的初始效率。这一研发成果不仅为商业上可行的 PSC 铺平了道路，还为未来的 ETL 设计开辟了途径，以实现更高效、更稳定的 PSC。

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来源期刊

Chinese Journal of Polymer Science 化学-高分子科学

CiteScore

7.10

自引率

11.60%

发文量

218

审稿时长

6.0 months

期刊介绍： Chinese Journal of Polymer Science (CJPS) is a monthly journal published in English and sponsored by the Chinese Chemical Society and the Institute of Chemistry, Chinese Academy of Sciences. CJPS is edited by a distinguished Editorial Board headed by Professor Qi-Feng Zhou and supported by an International Advisory Board in which many famous active polymer scientists all over the world are included. The journal was first published in 1983 under the title Polymer Communications and has the current name since 1985. CJPS is a peer-reviewed journal dedicated to the timely publication of original research ideas and results in the field of polymer science. The issues may carry regular papers, rapid communications and notes as well as feature articles. As a leading polymer journal in China published in English, CJPS reflects the new achievements obtained in various laboratories of China, CJPS also includes papers submitted by scientists of different countries and regions outside of China, reflecting the international nature of the journal.