title: [Study on the sensitizing effect of fac-tris(2-phenylpyridinato-N, C2') iridium (III) on two different fluorescent materials].
abstract: It is considered that the efficiency of fluorescent material based organic light emitting diodes can be enhanced by introducing a phosphorescent sensitizer. In the present work, devices with emission layers (EML) of fac-tris(2-phenylpyridinato-N, C2') iridium (III) (Ir(ppy)3)-sensitized-fluorescent materials were fabricated. Ir(ppy)3 was co-doped with DCJTB and rubrene in PVK matrix, respectively. When the doping ratio was proper, pure emission from fluorescent material can be achieved. Furthermore, the sensitizing mechanism and effect were analyzed. A weak effect between Ir(ppy)3 and DCJTB was found. It was deduced that the weaker sensitizing effect is related to the poor film appearance.
authors.affiliation: Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China.
authors.forename: Dan-Dan
authors.initials: DD
authors.lastname: Song
authors.forename: Su-Ling
authors.initials: SL
authors.lastname: Zhao
authors.forename: Zheng
authors.initials: Z
authors.lastname: Xu
authors.forename: Fu-Jun
authors.initials: FJ
authors.lastname: Zhang
authors.forename: Xin
authors.initials: X
authors.lastname: Yue
authors.forename: Hai-Na
authors.initials: HN
authors.lastname: Zhu