期刊
CHEMICAL PHYSICS REVIEWS
卷 3, 期 2, 页码 -出版社
AIP Publishing
DOI: 10.1063/5.0080250
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资金
- This work was supported by the Australian Centre for Advanced Photovoltaics and by the Australian Research Council Centre of Excellence in Exciton Science (funding Grant No. CE170100026). M.I.C. acknowledges support from the Sydney Quantum Academy. M.P.N.
- Australian Centre for Advanced Photovoltaics [CE170100026]
- Australian Research Council Centre of Excellence in Exciton Science
- Sydney Quantum Academy
- UNSW Scientia Program
Singlet fission is a process in which a high-energy singlet exciton separates into two lower energy triplet excitons, with high quantum efficiency and potential for reducing energy losses in photovoltaic cells. Efforts have been made in the past decade to incorporate singlet fission into solar cells, comparing and categorizing various device structures to identify promising avenues for future research and development.
Singlet fission is a form of multiple exciton generation, which occurs in organic chromophores when a high-energy singlet exciton separates into two lower energy triplet excitons, each with approximately half the singlet energy. Since this process is spin-allowed, it can proceed on an ultrafast timescale of less than several picoseconds, outcompeting most other loss mechanisms and reaching quantitative yields approaching 200%. Due to this high quantum efficiency, the singlet fission process shows promise as a means of reducing thermalization losses in photovoltaic cells. This would potentially allow for efficiency improvements beyond the thermodynamic limit in a single junction cell. Efforts to incorporate this process into solar photovoltaic cells have spanned a wide range of device structures over the past decade. In this review, we compare and categorize these attempts in order to assess the state of the field and identify the most promising avenues of future research and development. (C) 2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/)
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