The confusion about S-scheme electron transfer: critical understanding and a new perspective

文献情報

出版日 2023-12-07

DOI 10.1039/D3EE03282E

インパクトファクター 38.532

著者

Fang Li, Zhaohui Fang, Zhihua Xu, Quanjun Xiang

原文を見る

要旨

Charge separation is a crucial process that is closely related to the field of information and energy applications such as optoelectronics, photovoltaics, and artificial photosynthesis. The S-scheme electron transfer is widely used to regulate carrier separation due to its unique superiority. However, as our understanding of this field continues to evolve, there remain many controversial and ambiguous issues that are not well addressed. Focusing on the S-scheme electron transfer, this perspective delves into the reasons behind the confusion between the mechanisms of type-II and S-scheme transfer and clearly affords the theoretical criteria for the establishment of type-II transfer and S-scheme transfer. Considering the Fermi level alignment in a heterojunction is only applicable to the ideal situation, but not to the actual situation. The theory of Fermi level bending is further elaborated. To answer the question of whether the S-scheme driving force can be sustained, the phenomenon of Fermi level pinning is discussed intensively. Finally, the current problems and future development directions of S-scheme electron transfer are summarized and prospected.

掲載誌

Energy & Environmental Science

CiteScore: 32.34

自己引用率: 3.4%

年間論文数: 481

Energy & Environmental Science is an international journal dedicated to publishing exceptionally important and high quality, agenda-setting research tackling the key global and societal challenges of ensuring the provision of energy and protecting our environment for the future. The scope is intentionally broad and the journal recognises the complexity of issues and challenges relating to energy conversion and storage, alternative fuel technologies and environmental science. For work to be published it must be linked to the energy-environment nexus and be of significant general interest to our community-spanning readership. All scales of studies and analysis, from impactful fundamental advances, to interdisciplinary research across the (bio)chemical, (bio/geo)physical sciences and chemical engineering disciplines are welcomed. Topics include, but are not limited to, the following: Solar energy conversion and photovoltaics Solar fuels and artificial photosynthesis Fuel cells Hydrogen storage and (bio) hydrogen production Materials for energy systems Capture, storage and fate of CO2, including chemicals and fuels from CO2 Catalysis for a variety of feedstocks (for example, oil, gas, coal, biomass and synthesis gas) Biofuels and biorefineries Materials in extreme environments Environmental impacts of energy technologies Global atmospheric chemistry and climate change as related to energy systems Water-energy nexus Energy systems and networks Globally applicable principles of energy policy and techno-economics