Photovoltaic devices based on polythiophenes and substituted polythiophenes |
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| Affiliation: | 1. Intelligent Polymer Research Institute, University of Wollongong, NSW 2522, Australia;2. IFS-Chemistry, Massey University, Private Bag 11222, Palmerston North, New Zealand;3. BHP Steel Research Laboratories, The Broken Hill Proprietary Company Limited, P.O. Box 202, Port Kembla, NSW 2505, Australia;1. Institute of Chemistry, Saint Petersburg State University, Universitetskii pr. 26, Petrodvorets, 198504, St. Petersburg, Russia;2. Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan |
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| Abstract: | In recent years there has been considerable interest in the fabrication of photovoltaic devices using polymeric and organic materials. This paper presents work carried out using a range of polythiophenes, including some substituted with porphyrin moieties as light harvesters. Homopolymers and copolymers were investigated for their performance in photovoltaic devices, and the use of both solid polymer electrolyte and liquid electrolyte was examined. Both photoelectrochemical cells and Schottky devices were investigated. The best photoelectrochemical cell was fabricated using polyterthiophene which had Voc=139 mV, Isc=123.4 μA cm−2, fill factor=0.38, and energy conversion efficiency=0.02% at a halogen lamp intensity of 317 W m−2. The Schottky device gave a Voc=0.5 V and Isc of 0.98 μA cm−2 at a halogen lamp intensity of 500 W m−2. |
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