Gate-dependent photoconductivity of single layer graphene grafted with metalloporphyrin molecules

Mahn-Soo Choi, D. J. Lee, S. J. Lee, D. H. Hwang, J. H. Lee, N. Aoki, Y. Ochiai, H. J. Kim, D. Whang, Sangsig Kim, S. W. Hwang

Research output: Contribution to journalArticle

5 Citations (Scopus)

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.

Original languageEnglish
Article number163116
JournalApplied Physics Letters
Volume100
Issue number16
DOIs
Publication statusPublished - 2012 Apr 16

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photoconductivity
graphene
molecules
photosensitivity
porphyrins
ribbons
photocurrents
zinc
energy transfer
wavelengths
excitation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Choi, M-S., Lee, D. J., Lee, S. J., Hwang, D. H., Lee, J. H., Aoki, N., ... Hwang, S. W. (2012). Gate-dependent photoconductivity of single layer graphene grafted with metalloporphyrin molecules. Applied Physics Letters, 100(16), [163116]. https://doi.org/10.1063/1.4704921

Gate-dependent photoconductivity of single layer graphene grafted with metalloporphyrin molecules. / Choi, Mahn-Soo; Lee, D. J.; Lee, S. J.; Hwang, D. H.; Lee, J. H.; Aoki, N.; Ochiai, Y.; Kim, H. J.; Whang, D.; Kim, Sangsig; Hwang, S. W.

In: Applied Physics Letters, Vol. 100, No. 16, 163116, 16.04.2012.

Research output: Contribution to journalArticle

Choi, M-S, Lee, DJ, Lee, SJ, Hwang, DH, Lee, JH, Aoki, N, Ochiai, Y, Kim, HJ, Whang, D, Kim, S & Hwang, SW 2012, 'Gate-dependent photoconductivity of single layer graphene grafted with metalloporphyrin molecules', Applied Physics Letters, vol. 100, no. 16, 163116. https://doi.org/10.1063/1.4704921
Choi, Mahn-Soo ; Lee, D. J. ; Lee, S. J. ; Hwang, D. H. ; Lee, J. H. ; Aoki, N. ; Ochiai, Y. ; Kim, H. J. ; Whang, D. ; Kim, Sangsig ; Hwang, S. W. / Gate-dependent photoconductivity of single layer graphene grafted with metalloporphyrin molecules. In: Applied Physics Letters. 2012 ; Vol. 100, No. 16.
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