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

Hideyuki Tanaka; Takeshi Yasuda; Katsuhiko Fujita; Tetsuo Tsutsui

doi:10.1117/12.615632

3 October 2005 High efficiency polarization-sensitive photovoltaic devices using oriented organic thin film

Hideyuki Tanaka, Takeshi Yasuda, Katsuhiko Fujita, Tetsuo Tsutsui

Proceedings Volume 5938, Organic Photovoltaics VI; 593811 (2005) https://doi.org/10.1117/12.615632
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

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 510nm monochromatic polarized light through the Au electrode was used.

Citation Download Citation

Hideyuki Tanaka, Takeshi Yasuda, Katsuhiko Fujita, and Tetsuo Tsutsui "High efficiency polarization-sensitive photovoltaic devices using oriented organic thin film", Proc. SPIE 5938, Organic Photovoltaics VI, 593811 (3 October 2005); https://doi.org/10.1117/12.615632

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