Stabilizing Efficient Perovskite/Silicon Tandem Solar Cells With Amorphous and Asymmetric Hole‐Selective Contacts
Abstract
ABSTRACT Perovskite/silicon tandem solar cells (TSCs) hold great promise for next‐generation photovoltaics, yet uneven coverage and thermal instability of self‐assembled hole‐selective contacts hinder their commercialization. Here, we introduce ZF6, an amorphous molecular contact with an asymmetric π‐extended structure, featuring a dimethylindenocarbazole core and carbazole substitution. ZF6 exhibits rapid and robust adsorption on transparent conductive substrates, achieving uniform coverage and exceptional thermal stability. Its optimal energy level alignment and enhanced carrier extraction efficiency are compatible with various bandgap perovskites. ZF6‐based double‐junction perovskite/silicon TSCs achieve a reverse‐scan power conversion efficiency (PCE) of 34.02% (certified 32.81% at NREL) with improved operational stability, retaining over 97% and 87% of initial efficiency after 1000 h of maximum power point tracking at 45°C and 85°C, respectively. We also fabricate triple‐junction perovskite/perovskite/silicon TSCs, achieving a certified steady‐state PCE of 30.42%, which represents the highest‐performing triple‐junction perovskite‐based TSCs reported to date. This work establishes a novel design strategy for robust molecular contacts, advancing efficient and durable perovskite‐based tandem photovoltaics.
Article Details
Authors (29)
Yifan Chen
Chunyu Xu
School of Advanced Materials
Zhou Liu
Institute of Condensed Matter and Material Physics, School of Physics
Ye Xu
Anqi Lv
State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies)
Ming Luo
Zhijie Wang
Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry
Dongrui Jiang
Yi Mo
Haiyun Li
Rui He
Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry
Hongjiang Li
Rui Xia
Xinjun He
Department of Electrical and Electronic Engineering The University of Hong Kong Hong Kong China
Qianqian Wang
Department of Materials Science and Engineering
Donghao Miao
State Key Laboratory of Photovoltaic Science and Technology Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Institute of Optoelectronics College of Smart Materials and Future Energy College of Future Information Technology Fudan University Shanghai China
Liucheng Gao
State Key Laboratory of Photovoltaic Science and Technology Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Institute of Optoelectronics College of Smart Materials and Future Energy College of Future Information Technology Fudan University Shanghai China
Jamin Xie
State Key Laboratory of Photovoltaic Science and Technology Trina Solar Changzhou China
Guangtao Yang
Danni Yu
Xueping Zong
Yingguo Yang
Xueling Zhang
Anhui Basic Discipline Research Center for Clean Energy and Catalysis, College of Chemistry and Materials Science
Wallace C. H. Choy
Jun Yin
Yifeng Chen
Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
Jifan Gao
Junhao Chu
State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics
Hong Zhang