Spin-coated P3HT:Aminated carbon microsphere composite films for polymer solar cells
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Yongzhen Yanga) Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China; and Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China
Xuguang Liub) Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China; and College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Bingshe Xu Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China; and Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China (Received 16 August 2013; accepted 8 January 2014)
Poly (3-hexylthiophene) (P3HT) and aminated carbon microsphere (A-CMS) composite films with donor–acceptor architecture were prepared by spin-coating method, and the photovoltaic (PV) devices with a structure of ITO/PEDOT:PSS/P3HT:A-CMSs/Al were also fabricated. The structure and morphology of films were characterized by x-ray diffraction, Fourier transformation infrared spectrometry, ultraviolet-visible spectrophotometry, fluorescent spectrometry, and atomic force microscopy. The results indicate that A-CMSs exhibited a high LUMO energy level of 3.65 eV. The optimized blending ratio of P3HT:A-CMSs was 1:1. After annealing treatment, the intensity of absorption and the crystallization degree of the P3HT:A-CMS composite films enhanced. The polymer solar cells (PSCs) based on P3HT:A-CMS composite films showed a power conversion efficiency of 0.027% with an open circuit voltage of 0.80 V. It is suggested that A-CMS is a promising acceptor for PSCs. This would lay an experimental and theoretical foundation for the design of new acceptors for PV application.
I. INTRODUCTION
Over the past decades, considerable attention has been paid to the development of clean, efficient, and renewable alternative energy because of the global energy crisis and environmental issues. In numerous alternative energies, solar energy with its clean, plentiful, and renewable characteristics is more and more in people’s graces. And the most important way of solar energy utilization is to design and produce high conversion efficiency of solar cells. Currently, silicon-based solar cell is the best in terms of efficiency and reliability, but it is expensive and relatively bulky. Polymer solar cells (PSCs) based on conjugated polymer electron donors and fullerene derivative electron acceptors Address all correspondence to these authors. a) e-mail: [email protected] b) e-mail: [email protected] DOI: 10.1557/jmr.2014.14 492
J. Mater. Res., Vol. 29, No. 4, Feb 28, 2014
http://journals.cambridge.org
Downloaded: 11 Mar 2015
are an active research field for potential next generation solar cells as a result of their simple preparation, low cost, lightweight, and fl
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