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26 August 2008 Efficient organic p-i-n solar cells having very thick codeposited i-layer composed of highly purified organic semiconductors
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Abstract
Fullerene (C60) samples purified to seven-nine level by single-crystal formed sublimation were incorporated into i-layer of p-i-n organic solar cells. Fill factor hardly decreased even for the very thick C60: metal-free phthalocyanine (H2Pc) codeposited i-interlayer reaching 1.2 µm. For 1 µm thick i-layer, short-circuit photocurrent density of 18.3 mAcm-2 and photo-electric conversion efficiency of 5.3% was observed. Very large photocurrent density is mainly due to nearly 100% utilization of solar light in the visible region by 1 µm-thick i-layer.
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Masahiro Hiramoto and Kazuya Sakai "Efficient organic p-i-n solar cells having very thick codeposited i-layer composed of highly purified organic semiconductors", Proc. SPIE 7052, Organic Photovoltaics IX, 70520H (26 August 2008); https://doi.org/10.1117/12.798120
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