Effects of Doped Emitter on Performance of Red Organic Light Emitting Diodes

JIANG Qian; ZHANG Fang-hui; LIU Din-ghan; YAO Yi

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Effects of Doped Emitter on Performance of Red Organic Light Emitting Diodes

Device Technology & Physics | 更新时间：2020-08-12

- Effects of Doped Emitter on Performance of Red Organic Light Emitting Diodes
- Chinese Journal of Liquid Crystals and Displays Vol. 25, Issue 3, Pages: 364-369(2010)
- 作者机构：
  
  陕西科技大学电气与信息工程学院,陕西西安,710021
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN383+.1
- Received：21 November 2009，
  
  Revised：02 January 1900，
  
  Published Online：30 June 2010，
  
  Published：30 June 2010
- 稿件说明：
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蒋谦;张方辉;刘丁菡;姚毅. 掺杂发光体对红色有机电致发光的影响[J]. 液晶与显示, 2010,25(3): 364-369

JIANG Qian;ZHANG Fang-hui;LIU Din-ghan;YAO Yi. Effects of Doped Emitter on Performance of Red Organic Light Emitting Diodes[J]. 液晶与显示, 2010,25(3): 364-369
蒋谦;张方辉;刘丁菡;姚毅. 掺杂发光体对红色有机电致发光的影响[J]. 液晶与显示, 2010,25(3): 364-369 DOI：

JIANG Qian;ZHANG Fang-hui;LIU Din-ghan;YAO Yi. Effects of Doped Emitter on Performance of Red Organic Light Emitting Diodes[J]. 液晶与显示, 2010,25(3): 364-369 DOI：

摘要

为了研究掺杂发光体对红色有机电致发光二极管的增强效果，将DCJTB和C

545

T分别掺入Alq

制备了双发光层的OLED器件，器件结构为玻璃/ITO/4

4-tris[2-naphthylphenyl-1-phenylamino]triphenyla mine (2T-NATA)/N

N-di(naphthalene-1-yl)-N

N'-diphenyl benzidine (NPB)/tris-(8-hydroxyquinoline) aluminum (Alq

)∶4-(dicyanomethylene)-2-tert-butyl-6(1

7-tetramethyljulolidin-4-yl-vinyl)-4H-pyran-(DCJTB)/Alq

∶10-(2-benzothiazolyl)-2

7- tetrahydro-1

- tetramethyl-1H

11H-(1)-benzopyropyrano-(6

7- 8-i

j)quinolizin-11-one (C

545

T)/Alq

/LiF/Al，并且将其与单发光层的红、绿光器件相比较。实验结果表明，与单发光层的红光器件相比，加入绿光发光层的红光器件的发光特性被增强了，这种双发光层器件的最优掺杂比例为[Alq

∶(2.5%)C

545

T]/[Alq

∶(1.5%)DCJTB](质量分数)，在电压为11.5 V时得到最大发光亮度为6 830 cd/m

，在11 V电压时能得到4.59 cd/A的最大电流效率。但是，这种方法的缺点是削弱了红光的色纯度。

Abstract

Organic Light Emitting Diodes (OLEDs)with two emitters

doping DCJTB and C

545

T into Alq

to form a double emitting layers respectively

were presented to investigate enhancement of doped emitter on performance of red organic light emitting diodes. The devices structure used are: Glass/ITO/4

4-tris triphenylamine (2T-NATA)/N

N'-di(naphthalene-1-yl)-N

N'-diphenyl benzidine (NPB)/Tris-(8-hydroxyquinoline) aluminum (Alq

) ∶ 4- (dicyanomethylene)-2-tert-butyl-6(1

7-tetrame thyljulolidin-4-yl-vinyl)-4H-pyran(DCJTB)/Alq

∶ 10-(2-benzothiazolyl)-2

7- tetrahydro-1

- tetramethyl-1H

11H-(1)-benzopyropyrano-(6

7- 8-i

j)quinolizin-11-one (C

545

T)/ Alq

/LiF/Al

and the devices were compared with single emitting-layer red and green devices. The results indicated the red emission was indeed enhanced by the green emitter as comparing with the single emitting-layer red organic light emitting devices

and the optimal doping proportion for green emitter enhanced red device is ∶ (1.5%)DCJTB]/ ∶ (2.5%)C

545

T](mass fraction)

which exhibited a maximum brightness of 6 830 cd/m

at a voltage of 11.5 V

a maximum current efficiency of 4.59 cd/A at a voltage of 11 V

respectively

yet the means sacrifice the color purity of red light.

关键词

Keywords

references

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