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.
Bibliographical noteFunding Information:
This work was supported by Basic Science Research Program (2013R1A1A2011897, 2009-0083540, and 2014R1A2A2A01006776) of the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planing , Korea. H. Kim acknowledges the provision of DGIST basic research program ( 14-NB-04 ) through MSIP. J. Jeon and H. Kim acknowledge the support by the Global Frontier R&D Program ( 2013-073298 ) on Center for Hybrid Interface Materials (HIM) funded by the Ministry of Science, ICT & Future Planning .
All Science Journal Classification (ASJC) codes
- Materials Science(all)