Properties Improvement of Polymer White Organic Light Emitting Devices by Phosphorescence Sensitizer

]LIN Wen-Jing; SU Wen-ming; ZHANG Dong-Yu; ZHOU He-feng; WANG Hua

doi:10.3788/fgxb20123304.0440

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Properties Improvement of Polymer White Organic Light Emitting Devices by Phosphorescence Sensitizer

paper | 更新时间：2020-08-12

- Properties Improvement of Polymer White Organic Light Emitting Devices by Phosphorescence Sensitizer
- Chinese Journal of Luminescence Vol. 33, Issue 4, Pages: 440-443(2012)
- 作者机构：
  
  1. 太原理工大学新材料界面科学与工程教育部重点实验室,山西太原,030024
  2. 太原理工大学新材料工程技术研究中心,山西太原,030024
  3. 中国科学院苏州纳米技术与纳米仿生研究所,江苏苏州,215123
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20123304.0440
  CLC： TN383+.1
- Received：05 February 2012，
  
  Revised：07 March 2012，
  
  Published Online：10 April 2012，
  
  Published：10 April 2012
- 稿件说明：
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林文晶, 苏文明, 张东煜, 周禾丰, 王华. 利用磷光敏化改善聚合物白光OLED性能[J]. 发光学报, 2012,33(4): 440-443

]LIN Wen-Jing, SU Wen-ming, ZHANG Dong-Yu, ZHOU He-feng, WANG Hua. Properties Improvement of Polymer White Organic Light Emitting Devices by Phosphorescence Sensitizer[J]. Chinese Journal of Luminescence, 2012,33(4): 440-443
林文晶, 苏文明, 张东煜, 周禾丰, 王华. 利用磷光敏化改善聚合物白光OLED性能[J]. 发光学报, 2012,33(4): 440-443 DOI： 10.3788/fgxb20123304.0440.

]LIN Wen-Jing, SU Wen-ming, ZHANG Dong-Yu, ZHOU He-feng, WANG Hua. Properties Improvement of Polymer White Organic Light Emitting Devices by Phosphorescence Sensitizer[J]. Chinese Journal of Luminescence, 2012,33(4): 440-443 DOI： 10.3788/fgxb20123304.0440.

摘要

基于新型聚合物白光材料PF-DTFO制备了一种聚合物白光发光二极管(PWOLED)

通过在聚合物发光层中掺杂蓝光磷光染料FIrpic

利用磷光敏化发光原理

改善器件电致发光性能。在敏化PWOLED中

掺杂的FIrpic染料作为给体将产生的三重态能量传递给白光聚合物的长波发射基团

进一步提高了长波基团的发光强度

改善了白光光谱

使基色更平衡并且光谱更稳定。驱动电压从8 V增加到16 V时

器件电致发光光谱基本不变

色坐标仅从(0.33

0.38)移动至(0.32

0.38)。敏化后的器件发光效率相对于未掺杂器件提高了38%。

Abstract

Based on a new polymer of PF-DTFO

the novel polymer white light-emitting diode (PWOLED) was introduced with the structure of ITO/PEDOT:PSS/PF-DTFO/LiF/Al. Because of its excess blue emission

the modified PWOLEDs were developed by doping phosphorescence dye of FIrpic in emission layer. In the PWOLEDs

triplet excitons energy can transfer from FIrpic to long-wave emissive groups of PF-DTFO

which lead to an increased long-wave emission intensity. By using this phosphorescence sensitizer layer

both singlet and triplet excitons can be effectively employed

and the performance of the PWOLED was improved. The PWOLED shows a little change of CIE coordinate

which ranges from (0.33

0.38) to (0.32

0.38) as the driving voltage increased from 8 V to 16 V. Meanwhile

the device shows about 38% enhanced efficiency compared to that of unoptimized PWOLED.

关键词

Keywords

references

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