Number of graphene layers as a modulator of the open-circuit voltage of graphene-based solar cell
SCIE
SCOPUS
- Title
- Number of graphene layers as a modulator of the open-circuit voltage of graphene-based solar cell
- Authors
- Ihm, K; Lim, JT; Lee, KJ; Kwon, JW; Kang, TH; Chung, S; Bae, S; Kim, JH; Hong, BH; Yeom, GY
- Date Issued
- 2010-07-19
- Publisher
- AMER INST PHYSICS
- Abstract
- Impressive optical properties of graphene have been attracting the interest of researchers, and, recently, the photovoltaic effects of a heterojunction structure embedded with few layer graphene (FLG) have been demonstrated. Here, we show the direct dependence of open-circuit voltage (V-oc) on numbers of graphene layers. After unavoidably adsorbed contaminants were removed from the FLGs, by means of in situ annealing, prepared by layer-by-layer transfer of the chemically grown graphene layer, the work functions of FLGs showed a sequential increase as the graphene layers increase, despite of random interlayer-stacking, resulting in the modulation of photovoltaic behaviors of FLGs/Si interfaces. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3464319]
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/9698
- DOI
- 10.1063/1.3464319
- ISSN
- 0003-6951
- Article Type
- Article
- Citation
- APPLIED PHYSICS LETTERS, vol. 97, no. 3, 2010-07-19
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