近日，德国弗莱堡大学Stefan W. Glunz团队揭示电子在钙钛矿层上的积累增强了具有织构硅的串联太阳能电池。这一研究成果于2025年9月4日发表在《科学》杂志上。

降低载流子输运损失、提高选择性和最小化非辐射复合是提高钙钛矿/硅串联太阳能电池效率和稳定性的关键。

研究组设计了一种混合两步钙钛矿沉积方法，该方法与纳米标准的织构硅兼容，并结合了基于1,3-二氨基丙烷二氢碘化物的钙钛矿表面处理。该分子与钙钛矿表面的相互作用增加了电子选择接触处的大部分载流子浓度，从而减少了界面重组。

同时，这种场效应钝化提高了整个钙钛矿吸收剂的电子浓度，从而提高了电导率并降低了输运损失。结合起来，这就产生了高性能、全结构的钙钛矿/硅串联太阳能电池，在2.01伏开路电压下，实现了1太阳AM1.5G转换效率为33.1%，并且在红海海岸的室外稳定性得到了扩展。

附：英文原文

Title: Electron accumulation across the perovskite layer enhances tandem solar cells with textured silicon

Author: Oussama Er-raji, Christoph Messmer, Rakesh R. Pradhan, Oliver Fischer, Vladyslav Hnapovskyi, Sofiia Kosar, Marco Marengo, Mathias List, Jared Faisst, José P. Jurado, Oleksandr Matiash, Hannu P. Pasanen, Adi Prasetio, Badri Vishal, Shynggys Zhumagali, Anil R. Pininti, Yashika Gupta, Clemens Baretzky, Esma Ugur, Christopher E. Petoukhoff, Martin Bivour, Erkan Aydin, Randi Azmi, Jonas Schn, Florian Schindler, Martin C. Schubert, Udo Schwingenschlgl, Frédéric Laquai, Ahmed A. Said, Juliane Borchert, Patricia S. C. Schulze, Stefaan De Wolf, Stefan W. Glunz

Issue&Volume: 2025-09-04

Abstract: Reducing charge carrier transport losses, improving selectivity, and minimizing non-radiative recombination are essential for enhancing the efficiency and stability of perovskite/silicon tandem solar cells. We used a hybrid two-step perovskite deposition method that is compatible with industry-standard textured silicon, incorporating a perovskite surface treatment based on 1,3-diaminopropane dihydroiodide. The interaction of this molecule with the perovskite surface increased the majority charge carrier concentration at the electron-selective contact, which reduced interfacial recombination. Simultaneously, this field-effect passivation increased the electron concentration across the entire intrinsic perovskite absorber, which increased conductivity and reduced transport losses. Combined, this yields high-performance, fully-textured perovskite/silicon tandem solar cells, achieving a 1-sun AM1.5G conversion efficiency of 33.1% with an open-circuit voltage of 2.01 volts, and an extended outdoor stability in the Red Sea Coast.

DOI: adx1745

Source: https://www.science.org/doi/10.1126/science.adx1745