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Gate-dependent photoconductivity of single layer graphene grafted with metalloporphyrin molecules
- Authors
- Choi, M. S.; Lee, D. J.; Lee, S. J.; Hwang, D. H.; Lee, J. H.; Aoki, N.; Ochiai, Y.; Kim, H. -J.; Whang, D.; Kim, S.; Hwang, S. W.
- Issue Date
- 16-4월-2012
- Publisher
- AMER INST PHYSICS
- Keywords
- graphene; organic compounds; photoconductivity; zinc compounds
- Citation
- APPLIED PHYSICS LETTERS, v.100, no.16
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 100
- Number
- 16
- ISSN
- 0003-6951
- Abstract
- We present the gate-dependent photoconductivity measurements of single layer graphene ribbons grafted with zinc porphyrin molecules Zn(OEP). The Zn(OEP)-graphene showed a maximum 610% increase in its photo-sensitivity compared to the bare graphene samples. Furthermore, the measured photocurrent exhibited strong dependence on the gate bias, light power, and light wavelength. These dependences showed clear evidence of the excitation of the carriers in Zn(OEP) and their energy transfer to graphene. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4704921]
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