电流失配对全钙钛矿叠层太阳能电池中离子迁移的遮蔽效应

doi:10.1016/j.actphy.2026.100278

电流失配对全钙钛矿叠层太阳能电池中离子迁移的遮蔽效应

耿大鹏^1,2, 李帆^1,2, 夏兆生^1,2, 王刚², 叶飞鸿¹, 陈志亮¹, 毛建³, 李炫华⁴, 任信钢^1,2, 黄志祥^1,2

1 安徽大学, 光电信息获取与防护技术全国重点实验室, 安徽合肥 230601;
2 安徽大学, 计算智能与信号处理教育部重点实验室, 安徽合肥 230601;
3 复旦大学, 光电研究院, 未来信息创新学院, 光伏科学与技术全国重点实验室, 上海 200438;
4 西北工业大学, 材料学院, 纳米能源材料研究中心, 凝固技术全国重点实验室, 陕西西安 710072

收稿日期:2025-12-22 修回日期:2026-01-29 录用日期:2026-03-03
通讯作者: 任信钢, 黄志祥, 李炫华, 陈志亮, 毛建 E-mail:xgren@ahu.edu.cn;zxhuang@ahu.edu.cn;lixh32@nwpu.edu.cn;zhiliang.chen@ahu.edu.cn;maojian@fudan.edu.cn
基金资助:
国家重点研发计划(2022YFB4200903, 2022YFB4200901)；国家自然科学基金(U25A20413,62171001, U22A2017, 62371002, 62201003, 62271004, U23B2007, 62471002, 62405004)及安徽省自然科学基金(2408085Y031、 1908085QF251)资助。同时，本研究还获得安徽省高校自然科学杰出青年科学计划(2023AH020001)和安徽省高校协同创新计划(GXXT-2022-009)的支持。

Obscuring effect of current mismatch on ion migration in allperovskite tandem solar cells

Dapeng Geng^1,2, Fan Li^1,2, Zhaosheng Xia^1,2, Gang Wang², Feihong Ye¹, Zhiliang Chen¹, Jian Mao³, Xuanhua Li⁴, Xingang Ren^1,2, Zhixiang Huang^1,2

1 State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, Anhui University, Hefei 230601, Anhui Province, China;
2 Key Laboratory of Intelligent Computing & Signal Processing, Anhui University, Hefei 230601, Anhui Province, China;
3 State Key Laboratory of Photovoltaic Science and Technology, College of Future Information Technology, Institute of Optoelectronics, Fudan University, Shanghai 200438, China;
4 State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, Shaanxi Province, China

Received:2025-12-22 Revised:2026-01-29 Accepted:2026-03-03
Contact: Xingang Ren, Zhixiang Huang, Xuanhua Li, Zhiliang Chen, Jian Mao E-mail:xgren@ahu.edu.cn;zxhuang@ahu.edu.cn;lixh32@nwpu.edu.cn;zhiliang.chen@ahu.edu.cn;maojian@fudan.edu.cn

1. ACTPHY-2026.100278-SI-13p.pdf(1950KB)

摘要/Abstract

摘要： 钙钛矿(PVK)材料固有的离子特性是限制钙钛矿太阳能电池(PSCs)长期运行稳定性和可靠性的关键因素。由于可移动离子的慢响应特性及电场屏蔽效应，PSCs在电流密度–电压测试中常会出现迟滞现象。在两端钙钛矿叠层太阳能电池(TSCs)中，电流失配会导致各子电池对整体性能的贡献不同，从而为离子行为分析增添了额外复杂性。本研究通过构建完备的光-电-离子耦合模型，系统分析了全钙钛矿TSCs在不同电流匹配条件下的离子动力学与迟滞特性。结果表明：当子电池实现电流匹配时，迟滞效应由离子密度更高的子电池主导；当子电池电流失配时，迟滞效应则由短路电流密度较低的“限流”子电池主导，而另一子电池的离子行为则被“遮蔽”。此外，在倒置结构钙钛矿TSCs中，钙钛矿/空穴传输层界面处的缺陷对迟滞的影响大于钙钛矿/电子传输层界面。因此，针对“限流”子电池实施精准界面钝化与离子抑制策略是降低器件迟滞、提升器件性能的最优途径。

关键词: 全钙钛矿叠层太阳能电池, 迟滞效应, 电流失配, 离子动力学

Abstract: The intrinsic ionic characteristics of metal halide hybrid perovskite materials represent a critical factor limiting the long-term operational stability and reliability of perovskite solar cells. Compared with traditional photovoltaic materials, perovskite features a soft crystal lattice with weak ionic bonding, which enables the migration of mobile ions. Due to the slow response characteristics of mobile ions and the electric field shielding effect, PSCs exhibit hysteresis in current density–voltage measurements. This phenomenon not only reduces the accuracy of efficiency evaluation, but also leads to unstable output during practical operation and even affects the long-term stability of the devices, thereby posing a significant obstacle to the commercialization of perovskite photovoltaic technology. In two-terminal perovskite tandem solar cells, the operating mechanism is more complex. Their series structure requires current matching between the two subcells. Current mismatch causes each subcell to contribute differently to the overall performance, thereby introducing additional complexity to the analysis of ion migration, charge accumulation, and hysteresis behavior. In this study, by constructing a comprehensive opto-electro-ionic model, the ionic dynamics and hysteresis characteristics of all-perovskite TSCs under different current matching conditions were systematically analyzed. The results show that when the subcells are currentmatched, the hysteresis effect is dominated by the subcell with higher ion density; when the subcells are current-mismatched, the hysteresis effect is dominated by the “current-limiting” subcell with smaller shortcircuit current density, while the ionic behavior in the other subcell is “obscured”, and shows no contribution to the overall hysteresis. Additionally, the impact of interface defects at the perovskite/hole transport layer on the hysteresis is greater than that at the perovskite/electron transport layer in inverted-structure perovskite TSCs. Therefore, implementing precise interface passivation and ion suppression strategies for the “currentlimiting” subcell is the optimal approach to reduce device hysteresis and enhance performance. The results in this work offer a guideline to optimize two subcells and multiple interfaces, dramatically reducing both experimental costs and trial-and-error efforts. By enabling more targeted and economical refinement, the study accelerates the path toward industrial production of stable, high-efficiency all-perovskite tandem solar cells.

Key words: All-perovskite tandem solar cells, Hysteresis effect, Current mismatch, Ion dynamics

耿大鹏, 李帆, 夏兆生, 王刚, 叶飞鸿, 陈志亮, 毛建, 李炫华, 任信钢, 黄志祥. 电流失配对全钙钛矿叠层太阳能电池中离子迁移的遮蔽效应[J]. 物理化学学报 2026, (), 100278. doi: 10.1016/j.actphy.2026.100278

Dapeng Geng, Fan Li, Zhaosheng Xia, Gang Wang, Feihong Ye, Zhiliang Chen, Jian Mao, Xuanhua Li, Xingang Ren, Zhixiang Huang. Obscuring effect of current mismatch on ion migration in allperovskite tandem solar cells[J]. Acta Phys. -Chim. Sin. 2026, (), 100278. doi: 10.1016/j.actphy.2026.100278

链接本文: https://www.whxb.pku.edu.cn/CN/10.1016/j.actphy.2026.100278

https://www.whxb.pku.edu.cn/CN/Y2026/V/I/100278

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