A ternary morphology facilitated thick-film organic solar cell
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AbstractEmploying a thick active layer for organic photovoltaic (OPV) devices, holding great promise for enhanced light absorption and providing robust, pinhole-free films for large-scale fabrication, remains a great challenge. In this work, we propose a new route for fabricating thick-film OPV devices through a ternary bulk heterojunction system by combining a fullerene derivative with one high-crystallinity polymer and one high power conversion efficiency (PCE) polymer. As a demonstration, P3HT:PTB7:PC71BM ternary cells were fabricated, showing that they could maintain higher PCE with a thick active layer than both binary counterparts could. Synchrotron based grazing-incidence X-ray scattering results indicated that the ternary morphology gave rise to a smaller intermixing domain size and a favorable molecular orientation, which should be beneficial to charge separation and transport.
All Author(s) ListMai JQ, Lau TK, Xiao T, Su CJ, Jeng US, Zhao N, Xiao XD, Lu XH
Journal nameRSC Advances
Year2015
Month1
Day1
Volume Number5
Issue Number107
PublisherROYAL SOC CHEMISTRY
Pages88500 - 88507
ISSN2046-2069
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesChemistry; Chemistry, Multidisciplinary

Last updated on 2020-20-11 at 02:00