Improving the performance of polymer solar cells by adjusting the crystallinity and nanoscale phase separation

Chen, W.-B., Zu, Z.-X., Li, K., Chui, S. S.-Y., Roy, V.A.L. , Lai, P.-T. and Che, C.-M. (2012) Improving the performance of polymer solar cells by adjusting the crystallinity and nanoscale phase separation. Chinese Physics B, 21(7), 078401. (doi: 10.1088/1674-1056/21/7/078401)

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Abstract

In this paper, we report a high-performance P3HT/PCBM bulk-heterojunction solar cell with a power conversion efficiency of 4.85% fabricated by adjusting the polymer crystallinity and nanoscale phase separation using an ultrasonic irradiation mixing approach for the polymer. The grazing incidence X-ray diffraction, UV/Vis spectroscopic, and atomic force microscopic measurement results for the P3HT/PCBM blend films reveal that the P3HT/PCBM film fabricated by ultrasonic irradiation mixing of the P3HT and PCBM solutions for 10 min has a higher degree of crystallinity, a higher absorption efficiency, and better phase separation, which together account for the higher charge transport properties and photovoltaic cell performance.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Vellaisamy, Professor Roy
Authors: Chen, W.-B., Zu, Z.-X., Li, K., Chui, S. S.-Y., Roy, V.A.L., Lai, P.-T., and Che, C.-M.
College/School:College of Science and Engineering > School of Engineering
Journal Name:Chinese Physics B
Publisher:IOP Publishing
ISSN:1674-1056
ISSN (Online):2058-3834

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