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ファイル
言語
英語
著者
Yoshida, Yuki
Tanaka, Senku
内容記述(抄録等)
The photovoltaic properties of a Ga-doped ZnO (GZO)/3,4,9,10-perylene-tetracarboxyl-bis-benzimidazole (PTCBI)/Zn-phthalocyanine (ZnPc)/Cu heterojunction cell(cell A) and a GZO/ZnPc/Cu Schottky-barriercell(cell B) were investigated. The energy conversion efficiency η of cell A was only 0.02% immediately after the device preparation but improved to 0.46% after aging for 24 days in air. To elucidate the mechanism of this aging effect, photocurrent action and electro-absorption spectra were measured for cell B. The results reveal that a Schottky barrier exists at the ZnPc/Cu interface which blocks the transport of photogenerated holes to the Cuelectrode, and the barrier height is reduced by a white-light illumination of the device after aging. The change in barrier height is attributed to the formation of electron traps at the surface of the ZnPc layer on aging that trap photogenerated electrons.
掲載誌名
Journal of Applied Physics
106
6
開始ページ
064510-1
終了ページ
064510-8
ISSN
00218979
発行日
2009
DOI
出版者
American Institute of Physics
資料タイプ
学術雑誌論文
ファイル形式
PDF
権利関係
© 2009 AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
The following article appeared in Jour. Appl. Phys. 106, 064510 (2009). and may be found at http://dx.doi.org/10.1063/1.3226880.
著者版/出版社版
出版社版
部局
(旧組織)大学院総合理工学研究科
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