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Interactive Radical Dimers in Photoconductive Organic Thin Films
Author(s) -
Iwasaki Akito,
Hu Laigui,
Suizu Rie,
Nomura Kenji,
Yoshikawa Hirofumi,
Awaga Kunio,
Noda Yukiko,
Kanai Kaname,
Ouchi Yukio,
Seki Kazuhiko,
Ito Hiroshi
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200900472
Subject(s) - photocurrent , diradical , photoconductivity , indium tin oxide , materials science , thin film , optoelectronics , biasing , atomic orbital , molecular orbital , indium , voltage , photochemistry , chemistry , molecule , nanotechnology , physics , organic chemistry , atomic physics , electron , singlet state , quantum mechanics , excited state
Abstract Fully interactive : Overlap between extended unoccupied molecular orbitals leads to the high photoconductivity of interactive radical dimers. Sandwich‐type cells (see picture; ITO=indium tin oxide) comprising highly oriented thin films of a disjoint diradical, 4,4′‐bis(1,2,3,5‐dithiadiazolyl) (BDTDA) exhibit a photocurrent with a high on/off ratio at reverse bias voltages and photovoltaic behavior at zero bias voltage.