화학공학소재연구정보센터
Polymer, Vol.149, 273-285, 2018
Effect of the incorporation of an Ag nanoparticle interlayer on the photovoltaic performance of green bulk heterojunction water-soluble polythiophene solar cells
Two water-soluble regioregular poly(3-alkylthiophene)s, incorporating aminic groups at the end of the side chains, have been synthesized using a post-polymerization functionalization procedure on a (a bromine substituted polyalkylthiophene. The high solubility of the obtained polymers in water allowed for the preparation of "green" bulk heterojunction solar cells which reached a power conversion efficiency of 4.85% when PC61BM was used as electron-acceptor material. Improved optical absorption and photocurrent have been obtained by interposing a layer of Ag nanoparticles between the buffer and the photoactive layer, leading to a final power conversion efficiency of 5.51%. (C) 2018 Elsevier Ltd. All rights reserved.