High efficiency polarization-sensitive organic photovoltaic devices

Hideyuki Tanaka, Takeshi Yasuda, Katsuhiko Fujita, Tetsuo Tsutsui

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We report the fabrication of polarization-sensitive photovoltaic devices made of heterojunction-type vacuum-sublimed multilayer films composed of aligned 3,4,9,10-perylenetetracarboxylic-bisbenzimidazole (aligned PTCBI) and titanyl phthalocyanine (TiOPc). The PTCBI layer was made to be well aligned without losing high power conversion efficiency. The device configuration was ITO/In/aligned PTCBI/TiOPc/poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate)/Au, and the thickness of each layer was optimized for polarization-sensitive photodetection. The power conversion efficiencies under polarized white light parallel and perpendicular to the molecular orientation axis were 0.78% and 0.45%, respectively. When monochromatic polarized light at 540 nm was used, the photocurrent ratio of the parallel to the perpendicular condition reached a maximum of 2.32.

Original languageEnglish
Article number253506
JournalApplied Physics Letters
Volume88
Issue number25
DOIs
Publication statusPublished - Jun 19 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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