Efficient ultraviolet-blue polymer light-emitting diodes based on a fluorene-based non-conjugated polymer

被引：34

作者：

Huang, Fei ^{[1
]}

Niu, Yu-Hua ^{[1
]}

Liu, Michelle S. ^{[1
]}

Zhou, Xing-Hua ^{[1
]}

Tian, Yan-Qing ^{[1
]}

Jen, Alex K. -Y. ^{[1
]}

机构：

[1] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 08期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2336745

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Efficient UV-blue polymer light-emitting diodes based on a fluorene-based nonconjugated polymer, poly[2,7-(9,9-dihexylfluorene)-alt-4,4(')-phenylether] (PFPE), are fabricated. The device with PFPE as emitting layer shows a very narrow ultraviolet-blue electroluminescence emission with a peak at 397 nm and a maximal external quantum efficiency of 1.07%. By blending PFPE into poly(N-vinylcarbazole) (PVK), the device performance can be further improved. A maximum external quantum efficiency of 1.81%, with a maximum irradiance power density of 1223 mu W/cm(2), was reached by using a blend of PVK and PFPE in the weight ratio of 95:5 as emitting layer.

引用

页数：3

共 23 条

[1]

Bernius MT, 2000, ADV MATER, V12, P1737, DOI 10.1002/1521-4095(200012)12:23<1737::AID-ADMA1737>3.0.CO

[2]

2-N

[3] Poly(9,9-dialkyl-3,6-dibenzosilole) - a high energy gap host for phosphorescent light emitting devices [J].

Chan, KL ;

Watkins, SE ;

Mak, CSK ;

McKiernan, MJ ;

Towns, CR ;

Pascu, SI ;

Holmes, AB .

CHEMICAL COMMUNICATIONS, 2005, (46) :5766-5768

[4] Highly efficient UV organic light-emitting devices based on bi(9,9-diarylfluorene)s [J].

Chao, TC ;

Lin, YT ;

Yang, CY ;

Hung, TS ;

Chou, HC ;

Wu, CC ;

Wong, KT .

ADVANCED MATERIALS, 2005, 17 (08) :992-+

[5] Near-ultraviolet electroluminescent performance of polysilane-based light-emitting diodes with a double-layer structure [J].

Hoshino, S ;

Ebata, K ;

Furukawa, K .

JOURNAL OF APPLIED PHYSICS, 2000, 87 (04) :1968-1973

[6] Efficient light-emitting diodes based on a binaphthalene-containing polymer [J].

Jen, AKY ;

Liu, YQ ;

Hu, QS ;

Pu, L .

APPLIED PHYSICS LETTERS, 1999, 75 (24) :3745-3747

[7] BRIGHT BLUE ELECTROLUMINESCENCE FROM POLY(N-VINYLCARBAZOLE) [J].

KIDO, J ;

HONGAWA, K ;

OKUYAMA, K ;

NAGAI, K .

APPLIED PHYSICS LETTERS, 1993, 63 (19) :2627-2629

[8]

List EJW, 2002, ADV MATER, V14, P374, DOI 10.1002/1521-4095(20020304)14:5<374::AID-ADMA374>3.0.CO

[9]

2-U

[10] Improving the performance of polymer light-emitting diodes using polymer solid solutions [J].

Liu, J ;

Shi, YJ ;

Yang, Y .

APPLIED PHYSICS LETTERS, 2001, 79 (05) :578-580

← 1 2 3 →