近日，新加坡国立大学侯毅团队研究了高稳定性串联太阳能电池在织构硅上的最佳钙钛矿气相分配。这一研究成果发表在2025年12月18日出版的《科学》杂志上。

在具有微米级金字塔纹理的工业标准硅衬底上制备共形钙钛矿蒸汽沉积薄膜，由于钙钛矿蒸汽在复杂表面的分布不均以及有机/无机蒸汽的非平衡吸附效应影响，一直面临严峻挑战。

研究组引入3,3,3-三氟丙基三甲氧基硅烷以增强衬底与有机组分间的相互作用，从而优化蒸汽表面分布并平衡钙钛矿蒸汽的吸附过程。由此制备的钙钛矿薄膜在垂直方向上呈现均匀结构，且相杂质含量极低。纳米束衍射技术证实，在不同金字塔区域均形成了钙钛矿立方相晶体结构。基于此制备的叠层太阳能电池实现了31.3%的功率转换效率（孔径面积1平方厘米），并展现出卓越的工作稳定性：在85°C温度下连续进行1400小时标准太阳光照射后，器件仍能保持初始性能的90%。

附：英文原文

Title: Optimal perovskite vapor partitioning on textured silicon for high-stability tandem solar cells

Author: Nengxu Li, Xiuxiu Niu, Zijing Dong, Jingcong Hu, Ran Luo, Shuihua Yang, Qilin Zhou, Zhuojie Shi, Jinxi Chen, Xinyi Du, Ling Kai Lee, Yuduan Wang, Xiao Guo, Xi Wang, Cheng-Wei Qiu, Ming Lin, Rui He, Xueling Zhang, Yifeng Chen, Mengfei Wu, Yi Hou

Issue&Volume: 2025-12-18

Abstract: Achieving conformal, vapor-deposited perovskite films on industry-standard textured silicon substrates with micrometer-scale pyramids remains challenging because of the complex surface partitioning of perovskite vapors and the effects of nonequilibrium organic and inorganic vapor adsorption. We incorporated 3,3,3-trifluoropropyl-trimethoxysilane to enhance substrate-organic interactions, thereby optimizing surface partitioning and balancing adsorption of perovskite vapors. Vertically uniform perovskite films with minimal phase impurities formed, and nanobeam diffraction confirmed formation of the perovskite cubic phase across different pyramid regions. The resulting tandem devices achieved a power conversion efficiency of 31.3% (1 square centimeter aperture area) and exhibited excellent operational stability, retaining 90% of their initial performance after 1400 hours of continuous 1-sun illumination at 85°C.

DOI: adz3698

Source: https://www.science.org/doi/10.1126/science.adz3698