2015年9月
Exciton Diffusion in Conjugated Polymers: From Fundamental Understanding to Improvement in Photovoltaic Conversion Efficiency
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
- ,
- ,
- ,
- 巻
- 6
- 号
- 17
- 開始ページ
- 3417
- 終了ページ
- 3428
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/acs.jpclett.5b01147
- 出版者・発行元
- AMER CHEMICAL SOC
Singlet exciton diffusion plays a central role in the photovoltaic conversion in organic photovoltaics (OPVs). Upon light absorption, singlet excitons are promptly generated in organic materials instead of charge carriers because the dielectric constant (epsilon(r)) is small (similar to 3-4), which is in sharp contrast to inorganic and perovskite solar cells. In order to convert to charge carriers, excitons need to diffuse into an interface between electron donor and acceptor materials before deactivating to the ground state. Therefore, fundamental understanding of exciton diffusion dynamics is one of the most important issues to further improve OPVs. We highlight recent leading studies in this field and describe several approaches for efficient exciton harvesting at the interface in OPVs.
- リンク情報
- ID情報
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- DOI : 10.1021/acs.jpclett.5b01147
- ISSN : 1948-7185
- Web of Science ID : WOS:000360953300017