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Advances in Condensed Matter Physics
Volume 2015, Article ID 326384, 7 pages
Research Article

Modeling and Design of Graphene GaAs Junction Solar Cell

School of Physics and Electronic Engineering, Changshu Institute of Technology, Changshu 215500, China

Received 28 November 2014; Accepted 31 December 2014

Academic Editor: Wen Lei

Copyright © 2015 Yawei Kuang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Graphene based GaAs junction solar cell is modeled and investigated by Silvaco TCAD tools. The photovoltaic behaviors have been investigated considering structure and process parameters such as substrate thickness, dependence between graphene work function and transmittance, and n-type doping concentration in GaAs. The results show that the most effective region for photo photogenerated carriers locates very close to the interface under light illumination. Comprehensive technological design for junction yields a significant improvement of power conversion efficiency from 0.772% to 2.218%. These results are in good agreement with the reported experimental work.