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Flexible Polymer Photovoltaic Devices Prepared With Inverted Structures on Metal Foils

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6 Author(s)
Chen, Fang-Chung ; Dept. of Photonics, Nat. Chiao Tung Univ., Hsinchu ; Wu, Jyh-Lih ; Chia-Ling Lee ; Wen-Che Huang
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We have prepared top-illuminated organic photovoltaic devices on stainless-steel substrates, using molybdenum trioxide/indium tin oxide as the transparent top electrode. Incorporating an Al counter electrode grid having a shadow fraction of 10% effectively reduced the device resistance, thereby enhancing the power conversion efficiency to ca. 3%. This device exhibited superior mechanical flexibility. The inverted device architecture eliminated the need to use low-work-function metals, which are air sensitive and easily oxidized, thereby improving the air stability of the flexible devices.

Published in:

Electron Device Letters, IEEE  (Volume:30 ,  Issue: 7 )