Chin, Byung Doo Lee, Changhee 2024-01-21T00:33:54Z 2024-01-21T00:33:54Z 2021-09-02 2007-08-17 0935-9648 https://pubs.kist.re.kr/handle/201004/134192 Charge-carrier and exciton confinement is essential for efficiency and stability enhancment of electrophosphorescent devices. Emission-layer lifetimes of a 4,4'-N,N'-dicarbazole-biphenyl host doped with either a red- or green-emitting dye (upper and lower figures) show a strong dependence and near independence, respectively, on the type of exciton blocking layer used (four are shown). This is explained using energy-level differences and corresponding charge-trapping behavior. English WILEY-V C H VERLAG GMBH HIGH-EFFICIENCY TRANSPORT DIODES LAYER Confinement of charge carriers and excitons in electrophosphorescent devices: Mechanism of light emission and degradation Article 10.1002/adma.200602509 1 ADVANCED MATERIALS, v.19, no.16, pp.2061 - + ADVANCED MATERIALS 19 16 2061 + scie scopus 000249023200002 2-s2.0-34548309439 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article HIGH-EFFICIENCY TRANSPORT DIODES LAYER OLED Charge Confinement Exciton Lifetime Mechanism