Improvement of Electroluminescence Performance of Organic Light-Emitting Diodes with a Liquid-Emitting Layer by Introduction of Electrolyte and a Hole-Blocking Layer

被引:92
作者
Hirata, Shuzo [1 ]
Kubota, Korefumi [1 ]
Jung, Heo Hyo [1 ]
Hirata, Osamu [2 ]
Goushi, Kenichi [1 ]
Yahiro, Masayuki [3 ]
Adachi, Chihaya [1 ]
机构
[1] Kyushu Univ, Ctr Organ Photon & Elect Res OPERA, Nishi Ku, Fukuoka 8190395, Japan
[2] Nissan Chem Ind Co Ltd, Funabashi, Chiba 2748507, Japan
[3] Informat Technol & Nanotechnol ISIT, Fukuoka 8140001, Japan
关键词
ELECTROCHEMICAL-CELLS; TRANSPORT; DEVICES; EFFICIENCY; POLYMERS;
D O I
10.1002/adma.201003505
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Organic light-emitting diodes containing a liquid-emitting layer that exhibit improved external electroluminescence quantum efficiency (Phi(EL)) and maximum luminance are presented. Doping the liquid-emitting layer with an electrolyte significantly decreases the turn-on voltage for electroluminescence. Insertion of a TiO2 hole-blocking layer between the liquid-emitting layer and indium tin oxide cathode improves Phi(EL).
引用
收藏
页码:889 / +
页数:6
相关论文
共 16 条
[1]   Nearly 100% internal phosphorescence efficiency in an organic light-emitting device [J].
Adachi, C ;
Baldo, MA ;
Thompson, ME ;
Forrest, SR .
JOURNAL OF APPLIED PHYSICS, 2001, 90 (10) :5048-5051
[2]   Highly efficient phosphorescent emission from organic electroluminescent devices [J].
Baldo, MA ;
O'Brien, DF ;
You, Y ;
Shoustikov, A ;
Sibley, S ;
Thompson, ME ;
Forrest, SR .
NATURE, 1998, 395 (6698) :151-154
[3]   LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS [J].
BURROUGHES, JH ;
BRADLEY, DDC ;
BROWN, AR ;
MARKS, RN ;
MACKAY, K ;
FRIEND, RH ;
BURN, PL ;
HOLMES, AB .
NATURE, 1990, 347 (6293) :539-541
[4]   Relationship between electroluminescence and current transport in organic heterojunction light-emitting devices [J].
Burrows, PE ;
Shen, Z ;
Bulovic, V ;
McCarty, DM ;
Forrest, SR ;
Cronin, JA ;
Thompson, ME .
JOURNAL OF APPLIED PHYSICS, 1996, 79 (10) :7991-8006
[5]   Operational stability of electrophosphorescent devices containing p and n doped transport layers [J].
D'Andrade, BW ;
Forrest, SR ;
Chwang, AB .
APPLIED PHYSICS LETTERS, 2003, 83 (19) :3858-3860
[6]   FLEXIBLE LIGHT-EMITTING-DIODES MADE FROM SOLUBLE CONDUCTING POLYMERS [J].
GUSTAFSSON, G ;
CAO, Y ;
TREACY, GM ;
KLAVETTER, F ;
COLANERI, N ;
HEEGER, AJ .
NATURE, 1992, 357 (6378) :477-479
[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]   Effect of an Ultrathin TiO2 Layer Coated on Submicrometer-Sized ZnO Nanocrystallite Aggregates by Atomic Layer Deposition on the Performance of Dye-Sensitized Solar Cells [J].
Park, Kwangsuk ;
Zhang, Qifeng ;
Garcia, Betzaida Battalla ;
Zhou, Xiaoyuan ;
Jeong, Yoon-Ha ;
Cao, Guozhong .
ADVANCED MATERIALS, 2010, 22 (21) :2329-2332
[9]   Polymer light-emitting electrochemical cells: In situ formation of a light-emitting p-n junction [J].
Pei, QB ;
Yang, Y ;
Yu, G ;
Zhang, C ;
Heeger, AJ .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (16) :3922-3929
[10]   POLYMER LIGHT-EMITTING ELECTROCHEMICAL-CELLS [J].
PEI, QB ;
YU, G ;
ZHANG, C ;
YANG, Y ;
HEEGER, AJ .
SCIENCE, 1995, 269 (5227) :1086-1088