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A Novel Deep Blue LE-Dominated HLCT Excited State Design Strategy and Material for OLED.

ABSTRACT: Deep blue luminescent materials play a crucial role in the organic light-emitting diodes (OLEDs). In this work, a novel deep blue molecule based on hybridized local and charge-transfer (HLCT) excited state was reported with the emission wavelength of 423 nm. The OLED based on this material achieved high maximum external quantum efficiency (EQE) of 4% with good color purity. The results revealed that the locally-excited (LE)-dominated HLCT excited state had obvious advantages in short wavelength and narrow spectrum emission. What is more, the experimental and theoretical combination was used to describe the excited state characteristic and to understand photophysical property.

SUBMITTER: Tian X

PROVIDER: S-EPMC8348658 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature

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A Novel Deep Blue LE-Dominated HLCT Excited State Design Strategy and Material for OLED.

Tian Xuzhou X Sheng Jiyao J Zhang Shitong S Xiao Shengbing S Gao Ying Y Liu Haichao H Yang Bing B

Molecules (Basel, Switzerland) 20210728 15

Deep blue luminescent materials play a crucial role in the organic light-emitting diodes (OLEDs). In this work, a novel deep blue molecule based on hybridized local and charge-transfer (HLCT) excited state was reported with the emission wavelength of 423 nm. The OLED based on this material achieved high maximum external quantum efficiency (EQE) of 4% with good color purity. The results revealed that the locally-excited (LE)-dominated HLCT excited state had obvious advantages in short wavelength ...[more]

PMID: 34361710

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