Affiliation:
1. School of Physical Science and Technology Jiangsu Key Laboratory of Thin Films Center for Energy Conversion Materials and Physics (CECMP) Soochow University Suzhou 215006 P. R. China
2. School of Chemistry and Chemical Engineering Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education Henan Normal University Xinxiang Henan 453007 P. R. China
3. Molecular Biology Laboratory Center for Disease Immunity and Intervention School of Medicine, Lishui University Lishui Zhejiang 323000 P. R. China
Abstract
AbstractWhen constructing efficient, cost‐effective, and stable photoelectrodes for photoelectrochemical (PEC) systems, the solar‐driven photo‐to‐chemical conversion efficiency of semiconductors is limited by several factors, including the surface catalytic activity, light absorption range, carrier separation, and transfer efficiency. Accordingly, various modulation strategies, such as modifying the light propagation behavior and regulating the absorption range of incident light based on optics and constructing and regulating the built‐in electric field of semiconductors based on carrier behaviors in semiconductors, are implemented to improve the PEC performance. Herein, the mechanism and research advancements of optical and electrical modulation strategies for photoelectrodes are reviewed. First, parameters and methods for characterizing the performance and mechanism of photoelectrodes are introduced to reveal the principle and significance of modulation strategies. Then, plasmon and photonic crystal structures and mechanisms are summarized from the perspective of controlling the propagation behavior of incident light. Subsequently, the design of an electrical polarization material, polar surface, and heterojunction structure is elaborated to construct an internal electric field, which serves as the driving force to facilitate the separation and transfer of photogenerated electron–hole pairs. Finally, the challenges and opportunities for developing optical and electrical modulation strategies for photoelectrodes are discussed.
Funder
Higher Education Discipline Innovation Project
National Key Research and Development Program of China
National Natural Science Foundation of China
Key University Science Research Project of Jiangsu Province
Subject
General Materials Science,General Chemistry
Cited by
6 articles.
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