Interactive Radical Dimers in Photoconductive Organic Thin Films (pages 4022–4024)
Akito Iwasaki, Laigui Hu, Rie Suizu, Kenji Nomura, Hirofumi Yoshikawa, Kunio Awaga, Yukiko Noda, Kaname Kanai, Yukio Ouchi, Kazuhiko Seki and Hiroshi Ito
Article first published online: 25 APR 2009 | DOI: 10.1002/anie.200900472
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.