Hybrid structures of organic dye and graphene for ultrahigh gain photodetectors

A hybrid structure comprising organic dye molecules (e.g., rhodamine 6G) and graphene was developed for the realization of high-performance optoelectronic devices. The fabricated photodetector offered a broad spectral photo-response across wavelengths in the infrared, visible, and ultraviolet region...

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Bibliographic Details
Published in:Carbon (New York) 2015-07, Vol.88, p.165-172
Main Authors: Lee, Youngbin, Yu, Seong Hun, Jeon, Jiwon, Kim, Hyunmin, Lee, Jun Young, Kim, Hyungjun, Ahn, Jong-Hyun, Hwang, Euyheon, Cho, Jeong Ho
Format: Article
Language:English
Subjects:
Dyes
Gain
Graphene
Hybrid structures
Infrared
Photocurrent
Photodetectors
Photoelectric effect
Spectra
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Summary:A hybrid structure comprising organic dye molecules (e.g., rhodamine 6G) and graphene was developed for the realization of high-performance optoelectronic devices. The fabricated photodetector offered a broad spectral photo-response across wavelengths in the infrared, visible, and ultraviolet regions, as well as a high responsivity (∼460A/W at illumination power of 1μW). The photocurrent generated in the hybrid photodetector (∼mA) was much higher than that generated in a pristine graphene photodetector (
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2015.02.071