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Proceedings Paper

Optimization of postproduction heat treatment for plastic solar cells
Author(s): Kanzan Inoue; Ross William Ulbricht; Pallavi Chandra Madakasira; William M. Sampson; Sergey Lee; Jose M. Gutierrez; John P. Ferraris; Anvar A. Zakhidov
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Paper Abstract

We present this detailed study of a postproduction heat treatment of flexible organic solar cells based on regio-regular (RR) P3HT:PCBM composite in a wide temperature range from 75°C to 150°C. The efficiency of the photovoltaic device was significantly improved by postproduction heat treatment and both optimal annealing temperature and time dependencies were determined. Optimized parameters yielded >3% efficiency for devices on glass substrates and, using these optimized parameters, an efficiency of >2% was found for devices fabricated on flexible substrates. The optimal phase separation of PCBM and RR-P3HT into bi-continuous network structure occurs within a very short period of time and are very stable. We found that optimal concentration of PCBM in a RR-P3HT matrix is rather low, only 34 w.%. We show the performance of plastic solar cells fabricated on flexible substrates (ITO coated PET) using these optimized heat treatment parameters.

Paper Details

Date Published: 3 November 2004
PDF: 7 pages
Proc. SPIE 5520, Organic Photovoltaics V, (3 November 2004); doi: 10.1117/12.593476
Show Author Affiliations
Kanzan Inoue, Univ. of Texas/Dallas (United States)
Ross William Ulbricht, Univ. of Texas/Dallas (United States)
Pallavi Chandra Madakasira, Univ. of Texas/Dallas (United States)
William M. Sampson, Univ. of Texas/Dallas (United States)
Sergey Lee, Univ. of Texas/Dallas (United States)
Jose M. Gutierrez, Univ. of Texas/Dallas (United States)
John P. Ferraris, Univ. of Texas/Dallas (United States)
Anvar A. Zakhidov, Univ. of Texas/Dallas (United States)

Published in SPIE Proceedings Vol. 5520:
Organic Photovoltaics V
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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