Double-host High Efficiency White Organic Light-emitting Diodes with High Color Rendering Index

ZHU Jian-zhuo; LI Wen-lian

doi:10.3788/fgxb20123303.0299

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Double-host High Efficiency White Organic Light-emitting Diodes with High Color Rendering Index

paper | 更新时间：2020-08-12

- Double-host High Efficiency White Organic Light-emitting Diodes with High Color Rendering Index
- Chinese Journal of Luminescence Vol. 33, Issue 3, Pages: 299-303(2012)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 燕山大学理学院,河北秦皇岛,066004
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20123303.0299
  CLC： TN383+.1
- Received：25 January 2011，
  
  Revised：24 June 2011，
  
  Published Online：10 March 2012，
  
  Published：10 March 2012
- 稿件说明：
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朱键卓, 李文连. 采用复合母体的高效高显色指数白光有机发光二极管[J]. 发光学报, 2012,33(3): 299-303

ZHU Jian-zhuo, LI Wen-lian. Double-host High Efficiency White Organic Light-emitting Diodes with High Color Rendering Index[J]. Chinese Journal of Luminescence, 2012,33(3): 299-303
朱键卓, 李文连. 采用复合母体的高效高显色指数白光有机发光二极管[J]. 发光学报, 2012,33(3): 299-303 DOI： 10.3788/fgxb20123303.0299.

ZHU Jian-zhuo, LI Wen-lian. Double-host High Efficiency White Organic Light-emitting Diodes with High Color Rendering Index[J]. Chinese Journal of Luminescence, 2012,33(3): 299-303 DOI： 10.3788/fgxb20123303.0299.

摘要

采用复合母体技术制备了一种高效率高显色指数白光有机发光二极管。驱动电压在8 V到12 V变化时

器件的CIE-1931色坐标由(0.343 2

0.339 7)变化到(0.324 3

0.321 8)

Abstract

High efficiency white organic light-emitting diodes (WOLEDs) with high color rendering index (CRI) was fabricated. The white light was composed by the blue emission of 9

10-di(2-naphthyl) anthracene and the enhanced green and red emissions of tris-(8-hydroxyquinolinato) aluminum and 4-(dicyanomethylene)-2-t-butyl-6-(1

7-tetramethyljulolidyl-9-enyl)-4H-pyran

respectively. The WOLED shows the Commission Internationale de l'Eclairage-1931 coordinates vary from (0.343 2

0.339 7) to (0.324 3

0.321 8)

the correlated color temperature varies from 5 035 K to 5 915 K and all the CRIs exceed 90 when the driving voltage changes from 8 V to 12 V. A maximum brightness of 27 853 cd/m

at 14 V and a peak current efficiency of 9.58 cd/A at 7.5 V are attained

respectively. The electroluminescent (EL) spectrum is tuned by changing the thickness of the green and red emission layers. The efficiency enhancement is realised by sensitising the green and red light emissions. The maximum efficiency is increased by 73.6% compared to the control device.

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Keywords

references

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