Three‐layered organic solar cells, having a sandwiched interlayer of co‐deposited p‐type phthalocyanine (Pc) pigments and n‐type perylene derivative (PTC) pigments, exhibited photocurrent enhancement when compared with two‐layered cells without the interlayer. A large number of Pc/PTC molecular contacts within the interlayer serve as active sites for effective charge carrier photogeneration. The photovoltaic characteristics of the three‐layered configuration suggest the formation of a p‐i‐n like structure, in which the built‐in potential produced by Fermi level differences in the respective pigment layers is mainly distributed across the co‐deposited interlayer. Inorganic semiconductor films are also shown to be applicable to the present p‐i‐n cell structure as an n layer to obtain larger photovoltages.
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15 October 1992
Research Article|
October 15 1992
p‐i‐n like behavior in three‐layered organic solar cells having a co‐deposited interlayer of pigments
Masahiro Hiramoto;
Masahiro Hiramoto
Chemical Process Engineering, Faculty of Engineering, Osaka University, Yamadaoka, Suita, Osaka 565, Japan
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Hiroshi Fujiwara;
Hiroshi Fujiwara
Chemical Process Engineering, Faculty of Engineering, Osaka University, Yamadaoka, Suita, Osaka 565, Japan
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Masaaki Yokoyama
Masaaki Yokoyama
Chemical Process Engineering, Faculty of Engineering, Osaka University, Yamadaoka, Suita, Osaka 565, Japan
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J. Appl. Phys. 72, 3781–3787 (1992)
Article history
Received:
February 19 1992
Accepted:
June 16 1992
Citation
Masahiro Hiramoto, Hiroshi Fujiwara, Masaaki Yokoyama; p‐i‐n like behavior in three‐layered organic solar cells having a co‐deposited interlayer of pigments. J. Appl. Phys. 15 October 1992; 72 (8): 3781–3787. https://doi.org/10.1063/1.352274
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