Post by williamplayer on Jan 7, 2014 13:55:46 GMT
Transparent Conductive Graphene Electrode in GaN-based Ultra-Violet Light Emitting Diodes
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.
Read Full Article: www.opticsinfobase.org/view_article.cfm?gotourl=http%3A%2F%2Fwww.opticsinfobase.org%2FDirectPDFAccess%2F41CC3204-D425-7117-9F8B2F88AB605619_206668%2Foe-18-22-23030.pdf%3Fda%3D1%26id%3D206668%26seq%3D0%26mobile%3Dno&org=
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.
Read Full Article: www.opticsinfobase.org/view_article.cfm?gotourl=http%3A%2F%2Fwww.opticsinfobase.org%2FDirectPDFAccess%2F41CC3204-D425-7117-9F8B2F88AB605619_206668%2Foe-18-22-23030.pdf%3Fda%3D1%26id%3D206668%26seq%3D0%26mobile%3Dno&org=