Two novel bipolar compounds based-on 1, 2, 4-triazol derivatives for non-doped deep-blue and green phosphorescent OLED applications

Kexiang Wang; Peng Sun; Huixia Xu; Jie Li; Fang Wang; Yanqin Miao; Tingting Yang; Hua Wang; Bingshe Xu; Wai Yeung Wong

doi:10.1016/j.dyepig.2017.03.069

Two novel bipolar compounds based-on 1, 2, 4-triazol derivatives for non-doped deep-blue and green phosphorescent OLED applications

Kexiang Wang, Peng Sun, Huixia Xu, Jie Li, Fang Wang, Yanqin Miao, Tingting Yang, Hua Wang, Bingshe Xu, Wai Yeung Wong

Research output: Journal article publication › Journal article › Academic research › peer-review

20 Citations (Scopus)

Abstract

The different donors result in the various photophysical natures. The compound of TAZ-TPA possesses high thermal stabilities with a glass transition temperature (Tg) of 145 °C and shows a strong deep-blue emission at 435 nm in CH2Cl2solution. The non-doped device utilizing TAZ-TPA as emitter exhibits excellent stability with the Commission Internation de L'Eclairage coordinates of (0.15, 0.05). The radiative exciton yield of 36% in TAZ-TPA device is obtained due to the occurrence of charge transfer and hybridized local and charge-transfer excited states. The PL spectrum of TAZ-DPPF locates in the ultraviolet range with the peaks at 384 and 377 nm, and only the local electron excited state is observed. The green phosphorescent OLED hosted by TAZ-DPPF has achieved the performance of the current efficiency at 45.0 cd/A.

Original language	English
Pages (from-to)	25-32
Number of pages	8
Journal	Dyes and Pigments
Volume	143
DOIs	https://doi.org/10.1016/j.dyepig.2017.03.069
Publication status	Published - 1 Aug 2017

Keywords

1, 2, 4-Triazol derivatives
Bipolar materials
Non-doped deep-blue OLEDs

ASJC Scopus subject areas

Chemical Engineering(all)
Process Chemistry and Technology

More information

10.1016/j.dyepig.2017.03.069

Cite this

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title = "Two novel bipolar compounds based-on 1, 2, 4-triazol derivatives for non-doped deep-blue and green phosphorescent OLED applications",

abstract = "The different donors result in the various photophysical natures. The compound of TAZ-TPA possesses high thermal stabilities with a glass transition temperature (Tg) of 145 °C and shows a strong deep-blue emission at 435 nm in CH2Cl2solution. The non-doped device utilizing TAZ-TPA as emitter exhibits excellent stability with the Commission Internation de L'Eclairage coordinates of (0.15, 0.05). The radiative exciton yield of 36% in TAZ-TPA device is obtained due to the occurrence of charge transfer and hybridized local and charge-transfer excited states. The PL spectrum of TAZ-DPPF locates in the ultraviolet range with the peaks at 384 and 377 nm, and only the local electron excited state is observed. The green phosphorescent OLED hosted by TAZ-DPPF has achieved the performance of the current efficiency at 45.0 cd/A.",

keywords = "1, 2, 4-Triazol derivatives, Bipolar materials, Non-doped deep-blue OLEDs",

author = "Kexiang Wang and Peng Sun and Huixia Xu and Jie Li and Fang Wang and Yanqin Miao and Tingting Yang and Hua Wang and Bingshe Xu and Wong, {Wai Yeung}",

year = "2017",

month = aug,

day = "1",

doi = "10.1016/j.dyepig.2017.03.069",

language = "English",

volume = "143",

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journal = "Dyes and Pigments",

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TY - JOUR

T1 - Two novel bipolar compounds based-on 1, 2, 4-triazol derivatives for non-doped deep-blue and green phosphorescent OLED applications

AU - Wang, Kexiang

AU - Sun, Peng

AU - Xu, Huixia

AU - Li, Jie

AU - Wang, Fang

AU - Miao, Yanqin

AU - Yang, Tingting

AU - Wang, Hua

AU - Xu, Bingshe

AU - Wong, Wai Yeung

PY - 2017/8/1

Y1 - 2017/8/1

N2 - The different donors result in the various photophysical natures. The compound of TAZ-TPA possesses high thermal stabilities with a glass transition temperature (Tg) of 145 °C and shows a strong deep-blue emission at 435 nm in CH2Cl2solution. The non-doped device utilizing TAZ-TPA as emitter exhibits excellent stability with the Commission Internation de L'Eclairage coordinates of (0.15, 0.05). The radiative exciton yield of 36% in TAZ-TPA device is obtained due to the occurrence of charge transfer and hybridized local and charge-transfer excited states. The PL spectrum of TAZ-DPPF locates in the ultraviolet range with the peaks at 384 and 377 nm, and only the local electron excited state is observed. The green phosphorescent OLED hosted by TAZ-DPPF has achieved the performance of the current efficiency at 45.0 cd/A.

AB - The different donors result in the various photophysical natures. The compound of TAZ-TPA possesses high thermal stabilities with a glass transition temperature (Tg) of 145 °C and shows a strong deep-blue emission at 435 nm in CH2Cl2solution. The non-doped device utilizing TAZ-TPA as emitter exhibits excellent stability with the Commission Internation de L'Eclairage coordinates of (0.15, 0.05). The radiative exciton yield of 36% in TAZ-TPA device is obtained due to the occurrence of charge transfer and hybridized local and charge-transfer excited states. The PL spectrum of TAZ-DPPF locates in the ultraviolet range with the peaks at 384 and 377 nm, and only the local electron excited state is observed. The green phosphorescent OLED hosted by TAZ-DPPF has achieved the performance of the current efficiency at 45.0 cd/A.

KW - 1, 2, 4-Triazol derivatives

KW - Bipolar materials

KW - Non-doped deep-blue OLEDs

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U2 - 10.1016/j.dyepig.2017.03.069

DO - 10.1016/j.dyepig.2017.03.069

M3 - Journal article

SN - 0143-7208

VL - 143

SP - 25

EP - 32

JO - Dyes and Pigments

JF - Dyes and Pigments

ER -

Two novel bipolar compounds based-on 1, 2, 4-triazol derivatives for non-doped deep-blue and green phosphorescent OLED applications

Abstract

Keywords

ASJC Scopus subject areas

More information

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