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Surface Metallization of Polyimide as a Photoanode Substratefor Rear-Illuminated Dye-Sensitized Solar Cells

By Yu-Ting Huang, Ya-Yun Zhan, Sheng-Jye Cherng, Chih-Ming Chen, Shien-Ping Feng and Tzu-Chien Weic

Abstract

Plastic film is promising as a photoanode substrate of dye-sensitized solar cell (DSSC) for flexible applications, while a lowtemperaturesintering process is generally adopted for the TiO2 mesoporous film due to unstable thermal property of general plastics.This study demonstrates that typical high-temperature TiO2 sintering can be adopted for preparing the photoanode when using asurface-metallized polyimide (PI) film. A Sn/Ni bi-layer is formed on a PI film via a chemical process as the conductive layer. TheSn/Ni-coated PI photoanode can withstand high-temperature TiO2 sintering at a peak temperature of 430◦C for 30 min withoutsignificant visual deformation due to high thermal stability of PI and strength reinforcement caused by surface metallization. TheDSSC employing the Sn/Ni-coated PI film as the photoanode substrate reaches an energy conversion efficiency of 3.44% under1 sun rear-side illumination

Year: 2014
DOI identifier: 10.1149/2.046309jes
OAI identifier: oai:ir.lib.nchu.edu.tw:11455/84874

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