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Hybrid structures of organic dye and graphene for ultrahigh gain photodetectors

Title
Hybrid structures of organic dye and graphene for ultrahigh gain photodetectors
Authors
Lee, Y[Lee, Youngbin]Yu, SH[Yu, Seong Hun]Jeon, J[Jeon, Jiwon]Kim, H[Kim, Hyunmin]Lee, JY[Lee, Jun Young]Kim, H[Kim, Hyungjun]Ahn, JH[Ahn, Jong-Hyun]Hwang, E[Hwang, Euyheon]Cho, JH[Cho, Jeong Ho]
DGIST Authors
Kim, H[Kim, Hyunmin]
Issue Date
2015-07
Citation
Carbon, 88, 165-172
Type
Article
Article Type
Article
Keywords
Broad SpectralDye SensitizedGrapheneHybrid Photo DetectorsHybrid StructureOptoelectronic DevicesOrganic Dye MoleculesPhotoabsorptionsPhotodetectorsPhotonsUltrahigh GainUltraviolet Region
ISSN
0008-6223
Abstract
Abstract 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 (∼460 A/W at illumination power of 1 μW). The photocurrent generated in the hybrid photodetector (∼mA) was much higher than that generated in a pristine graphene photodetector (<μA). The performance of the dye-sensitized photodetector relied on enhanced photoabsorption and the implementation of a photocurrent gain arising from the photo-excited charges. © 2015 Elsevier Ltd. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2884
DOI
10.1016/j.carbon.2015.02.071
Publisher
Elsevier Ltd
Related Researcher
Files:
There are no files associated with this item.
Collection:
Companion Diagnostics and Medical Technology Research Group1. Journal Articles


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