title: Growth and characterization of thin Cu-phthalocyanine films on MgO(001) layer for organic light-emitting diodes.
abstract: Surface morphology and thermal stability of Cu-phthalocyanine (CuPc) films grown on an epitaxially grown MgO(001) layer were investigated by using atomic force microscope and X-ray diffractometer. The (002) textured β phase of CuPc films were prepared at room temperature beyond the epitaxial MgO/Fe/MgO(001) buffer layer by the vacuum deposition technique. The CuPc structure remained stable even after post-annealing at 350°C for 1 h under vacuum, which is an important advantage of device fabrication. In order to improve the device performance, we investigated also current-voltage-luminescence characteristics for the new top-emitting organic light-emitting diodes with different thicknesses of CuPc layer.
authors.affiliation: Department of Physics, Ewha Womans University, Seoul, 120-750, South Korea. taehee@ewha.ac.kr.
authors.forename: Yu Jeong
authors.initials: YJ
authors.lastname: Bae
authors.forename: Nyun Jong
authors.initials: NJ
authors.lastname: Lee
authors.forename: Tae Hee
authors.initials: TH
authors.lastname: Kim
authors.forename: Hyunduck
authors.initials: H
authors.lastname: Cho
authors.forename: Changhee
authors.initials: C
authors.lastname: Lee
authors.forename: Luke
authors.initials: L
authors.lastname: Fleet
authors.forename: Atsufumi
authors.initials: A
authors.lastname: Hirohata