Special Section on Organic Photovoltaics

Dependence of alkyl-substituent length for bulk heterojunction solar cells utilizing 1,4,8,11,15,18,22,25-octaalkylphthalocyanine

[+] Author Affiliations
Tetsuro Hori, Tetsuya Masuda, Takeshi Hayashi, Kaoru Fukumura, Hiroyuki Yoshida, Akihiko Fujii, Masanori Ozaki

Osaka University, Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan

Yasuo Miyake

Osaka University, Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan

National Institute of Advanced Industrial Science and Technology, Synthetic Nano-Function Materials Group, Research Institute for Ubiquitous Energy Devices, Kansai Center, 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan

Yo Shimizu

National Institute of Advanced Industrial Science and Technology, Synthetic Nano-Function Materials Group, Research Institute for Ubiquitous Energy Devices, Kansai Center, 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan

J. Photon. Energy. 2(1), 021004 (Mar 02, 2012). doi:10.1117/1.JPE.2.021004
History: Received September 22, 2011; Revised November 29, 2011; Accepted December 12, 2011
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Abstract.  Bulk heterojunction organic thin-film solar cells utilizing soluble phthalocyanine derivatives, 1,4,8,11,15,18,22,25-octaalkylphthalocyanine (CnPcH2, n=6, 7, 9, 10), were investigated. Two broad peaks existing in the external quantum efficiency spectra almost correspond to the Q-band and B-band of CnPcH2. The solar cell utilizing C6PcH2 had the best photovoltaic properties as evidenced by open-circuit voltage, short-circuit current density, fill factor, and energy conversion efficiency. Almost the same photovoltaic properties were observed in the solar cells utilizing C9PcH2 and C10PcH2. We discuss the photovoltaic properties by taking into consideration the crystal structure and electronic state of CnPcH2 from the results of the absorbance spectra, X-ray diffraction measurement, and polarization microscope observation.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Tetsuro Hori ; Yasuo Miyake ; Tetsuya Masuda ; Takeshi Hayashi ; Kaoru Fukumura, et al.
"Dependence of alkyl-substituent length for bulk heterojunction solar cells utilizing 1,4,8,11,15,18,22,25-octaalkylphthalocyanine", J. Photon. Energy. 2(1), 021004 (Mar 02, 2012). ; http://dx.doi.org/10.1117/1.JPE.2.021004


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