期刊
ANNUAL REVIEW OF PHYSICAL CHEMISTRY, VOL 67
卷 67, 期 -, 页码 113-133出版社
ANNUAL REVIEWS
DOI: 10.1146/annurev-physchem-040215-112144
关键词
organic light-emitting diode; organic solar cell; interface; electronic structure; charge generation; charge recombination; electron donor; electron acceptor
Intermolecular charge transfer (CT) states at the interface between electron-donating (D) and electron-accepting (A) materials in organic thin films are characterized by absorption and emission bands within the optical gap of the interfacing materials. CT states efficiently generate charge carriers for some D-A combinations, and others show high fluorescence quantum efficiencies. These properties are exploited in organic solar cells, photodetectors, and light-emitting diodes. This review summarizes experimental and theoretical work on the electronic structure and interfacial energy landscape at condensed matter D-A interfaces. Recent findings on photogeneration and recombination of free charge carriers via CT states are discussed, and relations between CT state properties and optoelectronic device parameters are clarified.
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