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Effect of a buffer layer, composition and annealing on the performance of a bulk heterojunction polythiophene/fullerene composite photovoltaic device

✍ Scribed by Sukhbinder Rait; Shipra Kashyap; P.K. Bhatnagar; P.C. Mathur; Sandip K. Sengupta; Jayant Kumar

Publisher: Elsevier Science
Year: 2007
Tongue: English
Weight: 652 KB
Volume: 39
Category: Article
ISSN: 1386-9477
DOI: 10.1016/j.physe.2007.04.002

No coin nor oath required. For personal study only.

✦ Synopsis

Post-annealing of P3HT/C 60 -based plastic solar cells, composite ratio and, incorporation of a buffer layers at the ITO-polymer/ fullerene composite interface and the polymer/fullerene composite-Al interface have shown significant improvement in the performance of the photovoltaic device, both in terms of open-circuit voltage and short-circuit current. The annealing temperature, time duration and P3HT/C 60 composite ratios have been optimized for the best performance of typical ITO/PEDOT:PSS/P3HT:C 60 /LiF/Al solar cell. The C 60 content is very crucial because it improves the photocurrent in the beginning but after a certain value it leads to decrease in absorption, thereby decreasing the photocurrent.

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