journal article·2024-09Open access

Homogenizing Morphology and Composition of Methylammonium‐Free Wide‐Bandgap Perovskite for Efficient and Stable Tandem Solar Cells

Xinxin Lian, Ye Xu, Wei Fu, Rui Meng, Quanxing Ma, Chunyu Xu, Ming Luo, Ying Hu, Junchao Han, Hao Min, Anurag Krishna, Yifan Chen, Huawei Zhou, Xueling Zhang, Cong Chen, Jin Chang, Can Li, Yifeng Chen, Zhiqiang Feng, Zhen Li, Guangzheng Zuo, Jifan Gao, Hong Zhang, Xiaoliang Mo, Junhao Chu

Advanced Functional Materials· Volume 34· Issue 37

Abstract

Abstract A facile and eco‐friendly dimethyl sulfoxide‐mediated solution aging (DMSA) treatment is presented to control the crystallization dynamics of methylammonium (MA)‐free wide‐bandgap (WBG) perovskite films, enhancing film quality, and morphology for high‐performance tandem solar cells. The comprehensive structural, morphological, and characterization analyses reveal that the DMSA treatment significantly enhances composition and morphology homogeneity while suppressing halide segregation. Consequently, opaque, and semi‐transparent MA‐free WBG perovskite solar cells (PSCs) exhibit remarkable power conversion efficiencies (PCEs) of 18.28% and 17.61%, respectively. Notably, the unencapsulated DMSA‐treated devices maintain 95% of the initial PCE after 900 h of continuous operation at 55 °C ± 5 °C. Furthermore, stacking semi‐transparent DMSA‐treated PSCs as top cells in a 4T tandem configuration, along with silicon heterojunction (SHJ), lead–tin (Pb–Sn) alloyed PSCs, and organic photovoltaics (OPV) as bottom cells, yields impressive PCEs of 28.09%, 26.09%, and 25.28%, respectively, for the fabricated tandem cells. This innovative approach opens new avenues for enhancing the photo‐stability and photovoltaic performance of perovskite‐based tandem solar cells.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Electronics and Photovoltaics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Photovoltaic Science and Technology Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Department of Materials Science Institute of Optoelectronics Yiwu Research Institute Fudan University Shanghai 200433 China

State Key Laboratory of Photovoltaic Science and Technology Trina Solar Changzhou 213031 China

Institute for Electric Light Sources School of Information Science and Technology Fudan University Shanghai 200433 China

State Key Laboratory of Solidification Processing Center for Nano Energy Materials School of Materials Science and Engineering Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU) Xi'an 710072 China

School of Materials Science and Engineering State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology Tianjin 300130 China

Key Laboratory of Flexible Electronics (KLOFE) Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies) Nanjing Tech University Nanjing 211816 China

Thin Film PV Technology Imec, imo‐imomec Thor Park 8320 Genk 3600 Belgium

EnergyVille, imo‐imomec Thor Park 8320 Genk 3600 Belgium

Hasselt University, imo‐imomec Martelarenlaan 42 Hasselt 3500 Belgium

School of Chemistry and Chemical Engineering College of Materials Science and Engineering Shandong Provincial Key Laboratory/Collaborative Innovation Center of Chemical Energy Storage Liaocheng University Liaocheng 252000 China

Funding

National Natural Science Foundation of China

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