Efficient blue and white organic light-emitting devices based on a single bipolar emitter

被引：50
作者：
Tao, Silu
Lee, Chun Sing [1 ]
Lee, Shuit-Tong
Zhang, Xiaohong
机构：
[1] City Univ Hong Kong, COSDAF, Hong Kong, Hong Kong, Peoples R China
[2] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China
[3] Chinese Acad Sci, Tech Inst Phys & Chem, Nanoorgan Photoelect Lab, Beijing 100080, Peoples R China
[4] Chinese Acad Sci, Tech Inst Phys & Chem, Lab Organ Optoelect Funct Mat & Mol Engn, Beijing 100080, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 01期
基金：
美国国家科学基金会;
关键词：
THERMAL-STABILITY; DIODES; DERIVATIVES;
D O I：
10.1063/1.2742289
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Excellent bipolar carrier transport properties of 2,7-dipyrenyl-9,9(')-dimethyl-fluorene (DPF) have been elucidated by using different device structures. A nondoped device using DPF as host emitter showed highly-efficient blue emission with a maximum efficiency of 6.0 cd/A and CIE coordinates of x=0.15 and y=0.19. Another device based on rubrene-doped DPF as emission layer gave pure high-efficiency white emission with good color stability, a maximum efficiency of 10.5 cd/A, and CIE coordinates of x=0.28 and y=0.35. The excellent bipolar transport capability and high performance as both emitter and host suggest that DPF is an efficient and versatile material for various applications in organic light-emitting devices. (C) 2007 American Institute of Physics.
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页数：3
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