title: Effect of solution combusted TiO2 nanopowder within commercial BaTiO3 dielectric layer on the photoelectric properties for AC powder electroluminescence devices.
abstract: A unique synthesis method was developed, which is called solution combustion method (SCM). TiO2 nanopowder was synthesized by this method. This SCM TiO2 nanopowder (-35 nm) was added to the dielectric layer of AC powder electroluminescence (EL) device. The dielectric layer was made of commercial BaTiO3 powder (-1.2 microm) and binding polymer. 0, 5, 10 and 15 wt% of SCM TiO2 nanopowder was added to the dielectric layer during fabrication of AC powder EL device respectively. Dielectric constant of these four kinds of dielectric layers was measured. The brightness and current density of AC powder EL device were also measured. When 10 wt% of SCM TiO2 nanopowder was added, dielectric constant and brightness were increased by 30% and 101% respectively. Furthermore, the current density was decreased by 71%. This means that the brightness was double and the power consumption was one third.
authors.affiliation: Department of Materials Science and Engineering, Myongji University, Yongin 449-728, Korea.
authors.forename: Sung
authors.initials: S
authors.lastname: Park
authors.forename: Gil Rak
authors.initials: GR
authors.lastname: Choi
authors.forename: Youn Cheol
authors.initials: YC
authors.lastname: Kim
authors.forename: Jae Chun
authors.initials: JC
authors.lastname: Lee
authors.forename: Ju Hyeon
authors.initials: JH
authors.lastname: Lee
mesh_terms: D017609:Barium Compounds / Q000737:chemistry* / Q000528:radiation effects; D004574:Electromagnetic Fields; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006358:Hot Temperature; D008027:Light; D008163:Luminescent Measurements / Q000295:instrumentation*; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure; D010316:Particle Size; D011208:Powders; D012996:Solutions; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D017609:Barium Compounds; D011208:Powders; D012996:Solutions; C024547:barium titanate(IV); C009495:titanium dioxide; D014025:Titanium