Special Section on Organic Photovoltaics

The effect of p-type doping on the performance of organic thin-film photovoltaic devices— m-MTDATA/C60 and 2-TNATA/C60 systems

[+] Author Affiliations
Takao Umeda

Fukui University of Technology, Department of Environmental & Biological Chemistry, 3-6-1, Gakuen, Fukui City, Fukui 850-8501, Japan

Keigo Chujo

Fukui University of Technology, Department of Environmental & Biological Chemistry, 3-6-1, Gakuen, Fukui City, Fukui 850-8501, Japan

Yasuhiro Nomura, Kotaro Tsuchida

Fukui University of Technology, Department of Environmental & Biological Chemistry, 3-6-1, Gakuen, Fukui City, Fukui 850-8501, Japan

Michihiro Hara

Fukui University of Technology, Department of Environmental & Biological Chemistry, 3-6-1, Gakuen, Fukui City, Fukui 850-8501, Japan

Sayo Terashima

The Kansai Electric Power Co., Ltd., 3-11-20, Nakoji, Amagasaki, Hyogo 661-0974, Japan

Yasuhiro Koji

The Kansai Electric Power Co., Ltd., 3-11-20, Nakoji, Amagasaki, Hyogo 661-0974, Japan

Hiroshi Kageyama

Osaka University, Department of Applied Chemistry, Faculty of Engineering, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan

Yasuhiko Shirota

Fukui University of Technology, Department of Environmental & Biological Chemistry, 3-6-1, Gakuen, Fukui City, Fukui 850-8501, Japan

J. Photon. Energy. 1(1), 011113 (March 17, 2011). doi:10.1117/1.3556725
History: Received November 13, 2010; Revised January 21, 2011; Accepted January 31, 2011; Published March 17, 2011; Online March 17, 2011
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The effect of p-type doping of the donor layer with 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ) on the performance of planar pn-heterojunction organic photovoltaic devices using 4,4,4-tris[3-methylphenyl(phenyl)amino]triphenylamine (m-MTDATA) or 4,4,4-tris[2-naphthyl(phenyl)amino]triphenylamine (2-TNATA) as an electron donor and C60 as an electron acceptor was studied. It was found that doping of the donor layer with F4TCNQ increases both the short-circuit photocurrent and the fill factor by 1.7 to 2.0 times and 1.5 to 1.6 times, respectively, but reduces the open-circuit voltage, resulting in the enhancement of power conversion efficiency by 1.6 to 1.7 times. These features caused by the doping are attributed to the decrease in the bulk resistance of the electron donor layer as a result of the p-type doping. The decrease in the open-circuit voltage was partly compensated by incorporation of a thin layer of undoped m-MTDATA on the ITO electrode, and hence, the power conversion efficiency was further enhanced.

Figures in this Article
© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Takao Umeda ; Keigo Chujo ; Yasuhiro Nomura ; Kotaro Tsuchida ; Michihiro Hara, et al.
"The effect of p-type doping on the performance of organic thin-film photovoltaic devices— m-MTDATA/C60 and 2-TNATA/C60 systems", J. Photon. Energy. 1(1), 011113 (March 17, 2011). ; http://dx.doi.org/10.1117/1.3556725


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