Open AccessHandheld deep ultraviolet emission device based on aluminum nitride quantum wells and graphene nanoneedle field emitters
Author(s) -
Takahiro Matsumoto,
Sho Iwayama,
Takao Saito,
Yasuyuki Kawakami,
Fumio Kubo,
Hiroshi Amano
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.024320
Subject(s) - nanoneedle , ultraviolet , optoelectronics , materials science , quantum well , graphene , optics , photonics , fabrication , nanotechnology , laser , physics , medicine , alternative medicine , pathology , nanostructure
We report the successful fabrication of a compact deep ultraviolet emission device via a marriage of AlGaN quantum wells and graphene nanoneedle field electron emitters. The device demonstrated a 20-mW deep ultraviolet output power and an approximately 4% power efficiency. The performance of this device may lead toward the realization of an environmentally friendly, convenient and practical deep ultraviolet light source.