DataVXAdvanced MaterialsPaper
journal article·2024-08

Surface Reconstruction for Efficient NiOx‐Based Inverted Perovskite Solar Cells

Nan Yan, Yang Cao, Zhiwen Jin, Yucheng Liu, Shengzhong (Frank) Liu, Zhimin Fang, Jiangshan Feng

Advanced Materials· Volume 36· Issue 31
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Source abstract

Abstract

Abstract Functional agents are verified to efficiently enhance device performance of perovskite solar cells (PSCs) through surface engineering. However, the influence of intrinsic characteristics of molecules on final device performance is overlooked. Here, a surface reconstruction strategy is developed to enhance the efficiency of inverted PSCs by mitigating the adverse effects of lead chelation (LC) molecules. Bathocuproine (BCP) is chosen as the representative of LC molecules for its easy accessibility and outstanding optoelectronic properties. During this strategy, BCP molecules on perovskite surface are first dissolved in solvents and then captured specially by undercoordinated Pb2+ ions, preventing adverse n‐type doping by the molecules themselves. In this case, the BCP molecule exhibits outstanding passivation effect on perovskite surface, which leads to an obviously increased open‐circuit voltage (VOC). Therefore, a record power conversion efficiency of 25.64% for NiOx‐based inverted PSCs is achieved, maintaining over 80% of initial efficiency after exposure to ambient condition for ≈1500 h.
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Research context

Electronic materials

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

Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China

School of Physical Science and Technology Lanzhou Center for Theoretical Physics Key Laboratory of Theoretical Physics of Gansu Province Lanzhou University Lanzhou 730000 China

Key Laboratory of Photoelectric Conversion and Utilization of Solar Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China

Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China

Institute of Technology for Carbon Neutralization Yangzhou University Yangzhou Jiangsu 225127 China

Funding

National Natural Science Foundation of China

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