title: Intense ultraviolet emission from needle-like WO3 nanostructures synthesized by noncatalytic thermal evaporation.
abstract: Photoluminescence measurements showed that needle-like tungsten oxide nanostructures synthesized at 590°C to 750°C by the thermal evaporation of WO3 nanopowders without the use of a catalyst had an intense near-ultraviolet (NUV) emission band that was different from that of the tungsten oxide nanostructures obtained in other temperature ranges. The intense NUV emission might be due to the localized states associated with oxygen vacancies and surface states.
authors.affiliation: Department of Materials Science and Engineering, Inha University, 253 Yonghyeon-dong, Nam-gu, Incheon 402-751, Republic of Korea. cmlee@inha.ac.kr.
authors.forename: Sunghoon
authors.initials: S
authors.lastname: Park
authors.forename: Hyunsu
authors.initials: H
authors.lastname: Kim
authors.forename: Changhyun
authors.initials: C
authors.lastname: Jin
authors.forename: Chongmu
authors.initials: C
authors.lastname: Lee