High efficiency polarization-sensitive photovoltaic devices using oriented organic thin film

Hideyuki Tanaka, Takeshi Yasuda, Katsuhiko Fujita, Tetsuo Tsutsui

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

We report the fabrication of polarization-sensitive photovoltaic devices made of hetero-junction type vacuum-sublimed multilayer films composed of aligned 3,4,9,10-perylenetetracarboxylic-bis-benzimidazole (aligned-PTCBI) and titanyl phthalocyanine (TiOPc). The PTCBI layer was successfully made to be well aligned without losing high photovoltaic power-conversion efficiency. High polarization sensitivity was achieved at around 540 nm. The device configuration was ITO/In/aligned-PTCBI/TiOPc/PEDOT:PSS/Au and the thickness of each layer was optimized for polarization-sensitive photo-detection. The power-conversion efficiencies under the polarized white light parallel and perpendicular to the molecular-orientation axis, through the ITO electrode were 0.78% and 0.45%, respectively. The ratio of short-circuit current, parallel to perpendicular, was 1.66. This device can be used as transparent photo-detectors, because the transmittance of the Au electrode was about 40% at 500-600nm. The short-circuit current ratio was increased to 3.0, when 5 10nm monochromatic polarized light through the Au electrode was used.

Original languageEnglish
Article number593811
Pages (from-to)1-8
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5938
DOIs
Publication statusPublished - Dec 1 2005
EventOrganic Photovoltaics VI - San Diego, CA, United States
Duration: Aug 2 2005Aug 4 2005

Fingerprint

Electrode
High Efficiency
Thin Films
Polarization
short circuit currents
ITO (semiconductors)
Thin films
Short circuit currents
Perpendicular
Electrodes
Conversion efficiency
electrodes
polarization
thin films
Phthalocyanine
Heterojunction
Molecular orientation
Multilayer films
Photodetector
Transmittance

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

High efficiency polarization-sensitive photovoltaic devices using oriented organic thin film. / Tanaka, Hideyuki; Yasuda, Takeshi; Fujita, Katsuhiko; Tsutsui, Tetsuo.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5938, 593811, 01.12.2005, p. 1-8.

Research output: Contribution to journalConference article

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