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Distinct photoresponse in graphene induced by laser irradiation.
- Source :
- Applied Physics Letters; 1/12/2015, Vol. 106 Issue 2, p1-4, 4p, 4 Graphs
- Publication Year :
- 2015
-
Abstract
- The graphene-based photodetector with tunable p-p<superscript>+</superscript>-p junctions was fabricated through a simple laser irradiation process. Distinct photoresponse was observed at the graphene (G)-laser irradiated graphene (LIG) junction by scanning photocurrent measurements, and its magnitude can be modulated as a result of a positive correlation between the photocurrent and doping concentration in LIG region. Detailed investigation suggests that the photo-thermoelectric effect, instead of the photovoltaic effect, dominates the photocurrent generation at the G-LIG junctions. Such a simple and low-cost technique offers an alternative way for the fabrication of graphene-based optoelectronic devices. [ABSTRACT FROM AUTHOR]
- Subjects :
- PHOTODETECTORS
GRAPHENE
LASER beams
SEMICONDUCTOR junctions
PHOTOCURRENTS
Subjects
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 106
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 100571936
- Full Text :
- https://doi.org/10.1063/1.4906203