Perovskite/Organic Tandem Solar Cells with 26.49% Efficiency via Enhanced Absorption and Minimized Energy Losses

Nano-Micro Letters 2026 Open access

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Authors: Bing Guo, Jiaqi Li, Ruihan Wu, Haozhe He, Senyao Wang, Longyu Li, Wenkai Zhao, Jinyuan Zhang, Lei Meng, Guankui Long, Zhaoyang Yao, Xiangjian Wan
+2 more Yongfang Li, Yongsheng Chen
DOI: 10.1007/s40820-025-02037-z
Cited by: 6
References: 54

Abstract

Although perovskite/organic tandem solar cells have many advantages, their power conversion efficiency (PCE) still substantially lags behind their perovskite/perovskite counterparts. One of the main reasons is the low external quantum efficiency and high energy loss of the rear subcell. In this work, guided by the semi-empirical analysis, the most suitable available material combination has been obtained. To further improve the photovoltaic performance of the organic rear cells, isopropanol has been used as a co-solvent additive to finely tune the bulk heterojunction morphology of the active layer. Together with the optimization of each subcell, a remarkable PCE of 26.49% (certified 25.56%) with a high open-circuit voltage of 2.214 V has been achieved for the perovskite/organic tandem device.

Fields of Study & Subjects

Perovskite Materials and Applications Organic Electronics and Photovoltaics Organic Light-Emitting Diodes Research

Publication details

Journal / source
Nano-Micro Letters
Publisher
Springer Science and Business Media LLC
Volume
18
Issue
1
Pages
186–186
Publication date
5 January 2026
Language
EN