4.8 Article

Hybrid structures of organic dye and graphene for ultrahigh gain photodetectors

Journal

CARBON
Volume 88, Issue -, Pages 165-172

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2015.02.071

Keywords

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Funding

  1. Basic Science Research Program of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planing, Korea [2013R1A1A2011897, 2009-0083540, 2014R1A2A2A01006776]
  2. DGIST basic research program through MSIP [14-NB-04]
  3. Global Frontier R&D Program on Center for Hybrid Interface Materials (HIM) - Ministry of Science, ICT & Future Planning [2013-073298]
  4. National Research Foundation of Korea [2013R1A1A2011897] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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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 (similar to 460 A/W at illumination power of 1 mu W). The photocurrent generated in the hybrid photodetector (similar to mA) was much higher than that generated in a pristine graphene photodetector (

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