Molecular Bridge in Wide-Bandgap Perovskites for Efficient and Stable Perovskite/ Silicon Tandem Solar Cells

被引：0

作者：

Ye, Tianshi ^{[1
]}

Qiao, Liang ^{[1
]}

Wang, Tao ^{[1
]}

Wang, Pengshuai ^{[1
]}

Zhang, Lin ^{[1
]}

Sun, Ruitian ^{[1
]}

Kong, Weiyu ^{[1
]}

Xu, Menglei ^{[2
]}

Yan, Xunlei ^{[2
]}

Yang, Jie ^{[2
]}

Zhang, Xinyu ^{[2
]}

Yang, Xudong ^{[1
,3
,4
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[2] Zhejiang Jinko Solar Co Ltd, Jiaxing 314416, Zhejiang, Peoples R China

[3] Shanghai Jiao Tong Univ, Ctr Hydrogen Sci, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China

[4] Shanghai Jiao Tong Univ, Zhangjiang Inst Adv Study, Innovat Ctr Future Mat, Shanghai 201210, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2025年 / 35卷 / 25期

基金：

中国国家自然科学基金;

关键词：

additive engineering; light-induced halide segregation; mixed-halide wide-bandgap perovskites; open-circuit voltage deficit; perovskite/silicon tandem solar cells; HALIDE PEROVSKITES;

D O I：

10.1002/adfm.202419391

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Perovskite/silicon tandem solar cells (TSCs) attract intensive attention because of their potential to deliver power conversion efficiencies (PCE) beyond those of their single-junction counterparts. However, the performance and stability of tandem devices are limited by defect-assisted non-radiative recombination and light-induced halide segregation in wide-bandgap (WBG) perovskite sub-cells. Here, 2-aminoethanesulfonamide hydrochloride (AESCl), with multi-point chelation sites and bridging capability, is incorporated into a 1.68 eV WBG perovskite to comprehensively passivate defects at grain boundaries and surfaces. As a result, AESCl-treated perovskite films show suppressed halide segregation and a champion WBG single-junction solar cell achieves an impressive efficiency of 22.80% with an open-circuit voltage of 1.286 V due to reduced non-radiative recombination. The efficient WBG perovskite sub-cells enable perovskite/silicon TSCs to reach a champion PCE of 30.36% over 1 cm2. Moreover, the tandem devices retain over 96% of their initial efficiency after operation for 1068 h under continuous AM 1.5G illumination at 25 degrees C in ambient air.

引用

页数：7

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