Dendritic Self-Host Phosphorescent Iridium Materials for High-Efficiency Organic Light-Emitting Diodes

Author(s): Chuang Yao*, Cuifeng Jiang, Jinshan Wang*.

Journal Name: Current Organic Chemistry

Volume 22 , Issue 6 , 2018

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Abstract:

Background: Dendritic self-host phosphorescent Iridium materials, which generally consist of an Iridium light-emitting core, dendrons(branches) and surface groups, are a kind of novel and effective triplet emission materials for non-doped solutionprocessed organic light-emitting diodes (OLEDs).

Methodology: Iridium light-emitting cores can harvest singlet and triplet excitons to obtain a theoretical internal quantum efficiency of 100% and can be chosen to determine key photoelectric properties, such as color of light emission. Peripheral dendrons can act as a host of an emissive core. The shielding effect can also reduce or eliminate the interactions between the emitting phosphors and prevent luminance quenching.

Conclusion: Surface groups can provide suitable solubility for dendrimers in organic solvents. Therefore, phosphorescent dendrimers are applicable to highly efficient self-host solution-processed OLEDs.

Keywords: Dendrimer, phosphorescent iridium materials, nondoped, self-host, organic light-emitting diodes, solution-process.

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Article Details

VOLUME: 22
ISSUE: 6
Year: 2018
Page: [590 - 599]
Pages: 10
DOI: 10.2174/1385272821666170830115628
Price: $58

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