Enhanced efficiency of graphene-silicon Schottky junction solar cells by doping with Au nanoparticles

Journal Article · Mon Nov 03 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4901106· OSTI ID:22310716

Liu, X.; Yin, Z. G.; Meng, J. H.; Gao, H. L.; Zhang, L. Q.; Zhao, Y. J.; Wang, H. L. ^[1]

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1. Key Lab of Semiconductor Materials Science, Institute of Semiconductors, CAS, Beijing 100083 (China)

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.

• OSTI ID: 22310716
• Journal Information: Applied Physics Letters, Vol. 105, Issue 18; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONVERSION
EFFICIENCY
ELECTRIC CONDUCTIVITY
ELECTRIC CONTACTS
ELECTRON TRANSFER
GOLD
GRAPHENE
LAYERS
NANOPARTICLES
OPTIMIZATION
SCHOTTKY BARRIER DIODES
SEMICONDUCTOR JUNCTIONS
SILICON
SOLAR CELLS
THICKNESS
WORK FUNCTIONS