Abstract
We report a graphene-based transparent conductive electrode for use in ultraviolet (UV) GaN light emitting diodes (LEDs). A few-layer graphene (FLG) layer was mechanically deposited. UV light at a peak wavelength of 368nm was successfully emitted by the FLG layer as transparent contact to p-GaN. The emission of UV light through the thin graphene layer was brighter than through the thick graphene layer. The thickness of the graphene layer was characterized by micro-Raman spectroscopy. Our results indicate that this novel graphene-based transparent conductive electrode holds great promise for use in UV optoelectronics for which conventional ITO is less transparent than graphene.
Original language | English |
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Pages (from-to) | 23030-23034 |
Number of pages | 5 |
Journal | Optics Express |
Volume | 18 |
Issue number | 22 |
DOIs | |
Publication status | Published - 2010 Oct 25 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics