Hybrid structures of organic dye and graphene for ultrahigh gain photodetectors

Youngbin Lee; Seong Hun Yu; Jiwon Jeon; Hyunmin Kim; Jun Young Lee; Hyungjun Kim; Jong Hyun Ahn; Euyheon Hwang; Jeong Ho Cho

doi:10.1016/j.carbon.2015.02.071

Hybrid structures of organic dye and graphene for ultrahigh gain photodetectors

Youngbin Lee, Seong Hun Yu, Jiwon Jeon, Hyunmin Kim, Jun Young Lee, Hyungjun Kim, Jong Hyun Ahn, Euyheon Hwang, Jeong Ho Cho

Research output: Contribution to journal › Article › peer-review

72 Scopus citations

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.

Original language	English
Article number	9739
Pages (from-to)	165-172
Number of pages	8
Journal	Carbon
Volume	88
DOIs	https://doi.org/10.1016/j.carbon.2015.02.071
State	Published - 1 Jul 2015

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title = "Hybrid structures of organic dye and graphene for ultrahigh gain photodetectors",

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.",

author = "Youngbin Lee and Yu, \{Seong Hun\} and Jiwon Jeon and Hyunmin Kim and Lee, \{Jun Young\} and Hyungjun Kim and Ahn, \{Jong Hyun\} and Euyheon Hwang and Cho, \{Jeong Ho\}",

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doi = "10.1016/j.carbon.2015.02.071",

language = "English",

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T1 - Hybrid structures of organic dye and graphene for ultrahigh gain photodetectors

AU - Lee, Youngbin

AU - Yu, Seong Hun

AU - Jeon, Jiwon

AU - Kim, Hyunmin

AU - Lee, Jun Young

AU - Kim, Hyungjun

AU - Ahn, Jong Hyun

AU - Hwang, Euyheon

AU - Cho, Jeong Ho

PY - 2015/7/1

Y1 - 2015/7/1

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/84926340016

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DO - 10.1016/j.carbon.2015.02.071

M3 - Article

AN - SCOPUS:84926340016

SN - 0008-6223

VL - 88

SP - 165

EP - 172

JO - Carbon

JF - Carbon

M1 - 9739

ER -

Hybrid structures of organic dye and graphene for ultrahigh gain photodetectors

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