论文类型：期刊论文
第一作者：Shuai You
通讯作者：Xiong Li
发表刊物：Science
收录刊物：SCI
学科门类：工学
一级学科：光学工程
文献类型：J
卷号：379
期号：6629
页面范围：288-294
DOI码：10.1126/science.add8786
发表时间：2023-01-19
影响因子：63.832
摘要：High-quality perovskite light harvesters and robust organic hole extraction layers are essential for achieving high-performing perovskite solar cells (PSCs). We introduce a phosphonic acid–functionalized fullerene derivative in mixed-cation perovskites as a grain boundary modulator to consolidate the crystal structure, which enhances the tolerance of the film against illumination, heat, and moisture. We also developed a redox-active radical polymer, poly(oxoammonium salt), that can effectively p-dope the hole-transporting material by hole injection and that also mitigates lithium ion diffusion. Power conversion efficiencies of 23.5% for 1-square-centimeter mixed–cation-anion PSCs and 21.4% for 17.1-square-centimeter minimodules were achieved. The PSCs retained 95.5% of their initial efficiencies after 3265 hours at maximum power point tracking under continuous 1-sun illumination at 70° ± 5°C.