Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5488927 | Current Applied Physics | 2017 | 5 Pages |
Abstract
The ZnO/graphene Schottky diode reveals a strong dependence of its photocurrent on the color of the illuminating lights (i.e., a dependence of photocurrent on the photon energy). As the photon energy increases, the magnitude of photocurrent is exponentially increased. Particularly, in comparison with the red-light illumination, the device clearly exhibits approximately 100-times-increased photocurrent when illuminating the ultra-violet light. We attribute this feature to the increase in photo-excited carriers at the depletion region in ZnO. The results suggest that the ZnO/graphene Schottky diode holds promise for the application in high-performance color-selectable photodetectors.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Hwauk Lee, Namhyun An, Seockjin Jeong, Soonhong Kang, Soonki Kwon, Jisu Lee, Youngmin Lee, Deuk Young Kim, Sejoon Lee,