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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51735

Title: Interface Treatments on the Polymer Substrate and ITO Film to Improve Performance of Flexible Solar Cells
Authors: Yuang-TungCheng
Chien-Kun Wang
Chih-Chiang Lu
Bao-Shun Yau
Kang L.Wang
Contributors: 國立臺灣海洋大學:電機工程學系
Keywords: Polyethylene terephthalate (PET)
Flexible solar cells
Indium tin oxide (ITO)
Work function
Conversion efficiencies
Date: 2010-10-01
Issue Date: 2018-12-21T06:34:05Z
Publisher: Applied Surface Science
Abstract: Abstract: In this paper, surface treatments on polyethylene terephthalate with polymeric hard coating (PET-HC) substrates are described. The effect of the contact angle on the treatment is first investigated. It has been observed that detergent is quite effective in removing organic contamination on the flexible PET-HC substrates. Next, using a DC-reactive magnetron sputter, indium tin oxide (ITO) thin films of 90 nm are grown on a substrate treated by detergent. Then, various ITO surface treatments are made for improving the performance of the finally developed organic solar cells with structure Al/P3HT:PCBM/PEDOT:PSS/ITO/PET. It is found that the parameters of the ITO including resistivity, carrier concentration, transmittance, surface morphology, and work function depended on the surface treatments and significantly influence the solar cell performance. With the optimal conditions for detergent treatment on flexible PET substrates, the ITO film with a resistivity of 5.6 × 10−4 Ω cm and average optical transmittance of 84.1% in the visible region are obtained. The optimal ITO surface treated by detergent for 5 min and then by UV ozone for 20 min exhibits the best WF value of 5.22 eV. This improves about 8.30% in the WF compared with that of the untreated ITO film. In the case of optimal treatment with the organic photovoltaic device, meanwhile, 36.6% enhancement in short circuit current density (Jsc) and 92.7% enhancement in conversion efficiency (η) over the untreated solar cell are obtained.
Relation: 256(24) pp.7606-7611
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51735
Appears in Collections:[電機工程學系] 期刊論文

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