Efficient Organic Light Emitting Diodes with Europium Complex by Using Alternate Multilayer Hole-transporting Layer

WEI Han-zhi; LI Wen-lian; SU Wen-ming; LI Ming-tao; LI Bin; HONG Zi-ruo

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Efficient Organic Light Emitting Diodes with Europium Complex by Using Alternate Multilayer Hole-transporting Layer

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- Efficient Organic Light Emitting Diodes with Europium Complex by Using Alternate Multilayer Hole-transporting Layer
- Chinese Journal of Luminescence Vol. 25, Issue 3, Pages: 329-331(2004)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所, 激发态物理重点实验室,吉林长春,130033
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN383.1
- Received：15 March 2004，
  
  Revised：30 March 2004，
  
  Published：20 May 2004
- 稿件说明：
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魏晗志, 李文连, 苏文明, 李明涛, 李斌, 洪自若. 应用交互叠层空穴传输层的高效铕配合物发光二极管[J]. 发光学报, 2004,25(3): 329-331

WEI Han-zhi, LI Wen-lian, SU Wen-ming, LI Ming-tao, LI Bin, HONG Zi-ruo. Efficient Organic Light Emitting Diodes with Europium Complex by Using Alternate Multilayer Hole-transporting Layer[J]. Chinese Journal of Luminescence, 2004,25(3): 329-331
魏晗志, 李文连, 苏文明, 李明涛, 李斌, 洪自若. 应用交互叠层空穴传输层的高效铕配合物发光二极管[J]. 发光学报, 2004,25(3): 329-331 DOI：

WEI Han-zhi, LI Wen-lian, SU Wen-ming, LI Ming-tao, LI Bin, HONG Zi-ruo. Efficient Organic Light Emitting Diodes with Europium Complex by Using Alternate Multilayer Hole-transporting Layer[J]. Chinese Journal of Luminescence, 2004,25(3): 329-331 DOI：

摘要

制备了铕配合物有机发光二极管(OLED)

为了获得Eu(DBM)3bath的特征发射

在器件中引入BCP作为空穴阻挡层。通过引入交互叠层的TPD/m-MTDATA作为空穴传输层

与传统异质结器件相比

最大发光效率及最大发光亮度都有明显提高。其最大发光效率在电流密度为2.8mA/cm

时达到3cdA

在电流密度为170mA/cm

时器件达到最大亮度670cd/cm

。对BCP空穴阻挡层及TPD/m-MTDATA交互叠层改善器件性能机理亦进行了讨论。

Abstract

Red organic light emitting diodes (OLEDs) emitted from europium (Eu) complex have been fabricated. To get high purity characteristic emissiom from Eu-complex

9-dimethyl-4

7-diphenyl-1

10-phenanthroline (BCP) was introduced as hole blocking layer. By introducing an alternate multilayer of 4

4′-bis[N-(p-tolyl)-N-phenyl amino]biphenyl (TPD) /1

5-tris-(3-methylphenylphenylamino) triphenylamine (m-MTDATA) as hole-transporting layer which can confines the surplus holes injected from the ITO anode

compared with the conventional heterostructure device

the luminous efficiency and the maximum brightness can be improved significantly

the maximum luminous efficiency and the maximum brightness of the red EL emission are 3 cd/A at the current density of 2.8mA/cm

and 670cd/m

at the current density of 170mA/cm

respectively. The mechanism to improve the red device performance with Eu-complex by the AM hole-transporting layer and effect of BCP on the emission characte ristic of the devices were also discussed.

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Related Institution

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Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology

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