Formation of Low-Dimensional Double Perovskite Layers by ABS and PEAI Sequential Treatment for Achieving High-Performance CsPbI3 Solar Cells
Source abstract
Abstract
All-inorganic CsPbI 3 perovskite has emerged as an alternative photovoltaic material owing to its good thermal stability and ideal bandgap for tandem applications. However, CsPbI 3 perovskite solar cells (PSCs) still show poor phase stability and low efficiency. Herein, we propose a new strategy to form low-dimensional double perovskite (2D-PEA 2 PbI 4 and quasi-2D-PEA 2 (CsPbI 3 )PbI 4 ) layers on the CsPbI 3 film by sequential treatment with ammonium benzenesulfonate (ABS) and phenylethylammonium iodide (PEAI). After ABS treatment, additional PbI 2 was in situ formed on the CsPbI 3 film surface, which further reacted with PEAI to generate low-dimensional double perovskite layers. The low-dimensional double perovskite layers effectively enhanced the efficiency and stability of CsPbI 3 solar cells. Consequently, a power conversion efficiency (PCE) of 19.06% is achieved. The unencapsulated device retained approximately 70% of its initial PCE after aging 300 h under ambient conditions. This study provides a new approach for the application of low-dimensional perovskites in all-inorganic PSCs.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, No. 2 Beinong Road, Changping District, Beijing 102206, P. R. China
School of Control and Computer Engineer, North China Electric Power University, No. 2 Beinong Road, Changping District, Beijing 102206, P. R. China
State Key Laboratory of Photovoltaic Science and Technology, Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception, Institute of Optoelectronics, Fudan University, Shanghai 200433, P. R. China
Funding
Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Hebei Province Key Research and Development Project · China Huaneng Group Co., Ltd Headquarters Science and Technology Project · Shanghai Pujiang Program
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