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

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.
Authors:
; ; ; ; ; ; ;  [1]
  1. Key Lab of Semiconductor Materials Science, Institute of Semiconductors, CAS, Beijing 100083 (China)
Publication Date:
OSTI Identifier:
22310716
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 18; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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