title: Handheld deep ultraviolet emission device based on aluminum nitride quantum wells and graphene nanoneedle field emitters.
abstract: 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.
authors.affiliation: Research and Development Center, Stanley Electric Corporation, 5-9-5 Tokodai, Tsukuba 300-2635, Japan. takahiro_matsumoto@stanley.co.jp
authors.forename: Takahiro
authors.initials: T
authors.lastname: Matsumoto
authors.forename: Sho
authors.initials: S
authors.lastname: Iwayama
authors.forename: Takao
authors.initials: T
authors.lastname: Saito
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Kawakami
authors.forename: Fumio
authors.initials: F
authors.lastname: Kubo
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Amano