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Multi-stacked organic light-emitting diodes using zinc oxide nanoparticle interfacial layers

Ryu, Seung Yoon ; Kim, Sung Hyun ; Kim, Chang Su ; Jo, Sungjin ; Lee, Jun Yeob

Current Applied Physics, 2012, 12(5), , pp.1378-1380 [Periódico revisado por pares]

Elsevier B.V

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  • Título:
    Multi-stacked organic light-emitting diodes using zinc oxide nanoparticle interfacial layers
  • Autor: Ryu, Seung Yoon ; Kim, Sung Hyun ; Kim, Chang Su ; Jo, Sungjin ; Lee, Jun Yeob
  • Assuntos: Augers ; Devices ; Light-emitting diodes ; Luminance ; Nanocomposites ; Nanomaterials ; Nanostructure ; Stacked OLEDs ; Tandem OLEDs ; Zinc oxide ; ZnO nanoparticles ; 물리학
  • É parte de: Current Applied Physics, 2012, 12(5), , pp.1378-1380
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
    content type line 23
    G704-001115.2012.12.5.025
  • Descrição: Stacked organic light-emitting diodes (SOLEDs) with 30-nm nanoparticle (NP) interfacial layers were investigated. Zinc oxide (ZnO) was used as an interfacial layer between two green polymer (GP) layers. SOLEDs with NP interfacial layers had higher device efficiency than did a single-unit device due to the high probability of exciton recombination that originated from the Auger electron-assisted energy up-conversion process. Although the current density and luminance of SOLEDs with ZnO NP interfacial layers were smaller than those of the reference device, the efficiency was doubled because of the big band alignment difference and the large band gap between GP and ZnO NP interfacial layers, which induced more radiative-exciton recombination. ► Stacked organic light-emitting diodes (SOLEDs) were investigated with 30-nm nanoparticles (NPs). ► SOLEDs with NPs had higher device efficiency than did a single unit device due to the Auger electron-assisted energy up-conversion process. ► The efficiency was doubled because of the big band alignment difference and the large band gap between NPs and green polymer.
  • Editor: Elsevier B.V
  • Idioma: Inglês;Coreano
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