Color tunable organic thin film. light emitting devices based on heterostructure

被引:1
作者
Tan, HS [1 ]
Yao, JQ [1 ]
机构
[1] Foshan Univ, Dept Elect, Foshan 528000, Peoples R China
来源
APOC 2003: ASIA-PACIFIC OPTICAL AND WIRELESS COMMUNICATIONS; MATERIALS, ACTIVE DEVICES, AND OPTICAL AMPLIFIERS, PTS 1 AND 2 | 2004年 / 5280卷
关键词
organic light emitting device; heterostructure; electroluminescence; color tunable;
D O I
10.1117/12.522120
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Organic light emitting devices (OLEDs) have attracted great interest because of their bright future as a competitive flat-panel display technique of LCD. OLEDs based on PDDOPV [poly (2,5-bis (dodecyloxy)-phenylenevinylene)]/Alq3 (8-hydroxyquinoline aluminum) heterostructure were fabricated. The emission spectrum of the device base on heterostructure PDDOPV(70nm)/Alq3(20nm) is similar to that of single layer device of PDDOPV except the emission intensity is enhanced by several magnitude order. But the emission spectrum of the device based on heterostructure PDDOPV(70nm)/Alq3(32nm) is composed of two parts, one is originated from PDDOPV, the other is from Alq3. The emission from PDDOPV dominates at low drive voltage but the contribution from alq3 emission increases with the increase of applied voltage. Finally Alq3 emission dominates at high applied voltage.
引用
收藏
页码:495 / 498
页数:4
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