Triphenyl Phosphine Oxide and Carbazole-based Polymer Host Materials for Green Phosphorescent Organic Light-emitting Diodes

Hong-ji Jiang; Qing-wei Zhang; Xu He; Xiao-lin Zhang; Xin-wen Zhang

doi:10.1007/s10118-017-1926-5

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Triphenyl Phosphine Oxide and Carbazole-based Polymer Host Materials for Green Phosphorescent Organic Light-emitting Diodes

Papers | Updated：2021-02-18

- Triphenyl Phosphine Oxide and Carbazole-based Polymer Host Materials for Green Phosphorescent Organic Light-emitting Diodes
- Chinese Journal of Polymer Science Vol. 35, Issue 5, Pages: 611-622(2017)
- Affiliations：
  
  Key Laboratory of Organic Electronics and Information Displays, National Jiangsu Synergetic Innovation Center for Organic Electronics and Information Displays, Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
- Author bio：
  
  Hong-ji Jiang (姜鸿基), E-mail:iamhjjiang@njupt.edu.cn
- Funds：
- DOI：10.1007/s10118-017-1926-5
  CLC：
- Received：22 September 2016，
  
  Revised：2016-11-24，
  
  Accepted：24 November 2016，
  
  Published：05 May 2017
- Accepted：
Scan QR Code
Hong-ji Jiang, Qing-wei Zhang, Xu He, et al. Triphenyl Phosphine Oxide and Carbazole-based Polymer Host Materials for Green Phosphorescent Organic Light-emitting Diodes[J]. Chinese Journal of Polymer Science, 2017, 35(5): 611-622.
DOI：

Hong-ji Jiang, Qing-wei Zhang, Xu He, et al. Triphenyl Phosphine Oxide and Carbazole-based Polymer Host Materials for Green Phosphorescent Organic Light-emitting Diodes[J]. Chinese Journal of Polymer Science, 2017, 35(5): 611-622. DOI： 10.1007/s10118-017-1926-5.

摘要

Abstract

Four novel polymers

poly (3

6-9-decyl-carbazole-

alt

-1

3-benzene) (

PB13CZ

)

poly (3

6-9-decyl-carbazole-

alt

-bis (4-phenyl) (phenyl) phosphine oxide) (

PTPPO38CZ

)

poly (3

6-9-decyl-carbazole-

alt

-2

4-phenyl (diphenyl) phosphine oxide) (

PTPPO13CZ

) and poly (3

6-9-decyl-carbazole-

alt

-bis (3-phenyl) (phenyl) phosphine oxide) (

PTTPO27CZ

) were synthesized

and their thermal

photophysical properties and device applications were further investigated to correlate the chemical structures with the photoelectric performance of bipolar host materials for phosphorescent organic light emitting diodes. All of them show high thermal stability as revealed by their high glass transition temperatures and thermal decomposition temperatures at 5% weight loss. These polymers have wide band gaps and relatively high triplet energy levels. As a result

the spin coating method was used to prepare the green phosphorescent organic light emitting diodes with polymers

PTPPO38CZ

PTPPO13CZ

and

PTTPO27CZ

as the typical host materials. The green device of polymer

PTPPO38CZ

as host material shows electroluminescent performance with maximum current efficiency of 2.16 cd·A

-1

maximum external quantum efficiency of 0.7%

maximum brightness of 1475 cd·m

-2

and reduced efficiency roll-off of 7.14% at 600 cd·m

-2

which are much better than those of the same devices hosted by polymers

PTTPO27CZ

and

PTPPO13CZ

关键词

Keywords

references

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