Journal
APPLIED PHYSICS LETTERS
Volume 105, Issue 18, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4901106
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Funding
- National Basic Research Program of China [2012CB934200]
- National Natural Science Foundation of China [61376007, 11274303]
- Beijing Natural Science Foundation [2142032]
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We have reported a method to enhance the performance of graphene-Si (Gr/Si) Schottky junction solar cells by introducing Au nanoparticles (NPs) onto the monolayer graphene and few-layer graphene. The electron transfer between Au NPs and graphene leads to the increased work function and enhanced electrical conductivity of graphene, resulting in a remarkable improvement of device efficiency. By optimizing the initial thickness of Au layers, the power conversion efficiency of Gr/Si solar cells can be increased by more than three times, with a maximum value of 7.34%. These results show a route for fabricating efficient and stable Gr/Si solar cells. (C) 2014 AIP Publishing LLC.
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