High electron mobility triazine for lower driving voltage and higher efficiency organic light emitting devices

被引:52
作者
Klenkler, Richard A. [1 ]
Aziz, Hany [2 ]
Tran, An [3 ]
Popovic, Zoran D. [1 ]
Xu, Gu [1 ]
机构
[1] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L8, Canada
[2] Univ Waterloo, Dept Elect & Comp Engn, Waterloo, ON N2L 3G1, Canada
[3] Carleton Univ, Dept Elect Engn, Ottawa, ON K1S 5B6, Canada
关键词
organic device; charge transport; electron mobility; triazine; OLED;
D O I
10.1016/j.orgel.2007.11.004
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The triazine compound 4,4'-bis-[2-(4,6-diphenyl-1,3,5-triazinyl)]-1,1'-biphenyl (BTB) was developed for use as an electron transport material in organic light emitting devices (OLEDs). The material demonstrates an electron mobility of similar to 7.2 x 10(-4) cm(2) V-1 s(-1) at a field of 8.00 x 10(5) V cm(-1), which is 10-fold greater than that of the widely used material tris(8-hydroxyquinoline) aluminum (AIQ(3)). OLEDs with a BTB electron transport layer showed a similar to 1.7-2.5 V lower driving voltage and a significantly increased efficiency, compared to those with AIQ3. These results suggest that BTB has a strong potential for use as an OLED electron transport layer material. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:285 / 290
页数:6
相关论文
共 23 条
[1]   Degradation mechanism of small molecule-based organic light-emitting devices [J].
Aziz, H ;
Popovic, ZD ;
Hu, NX ;
Hor, AM ;
Xu, G .
SCIENCE, 1999, 283 (5409) :1900-1902
[2]   Organic light emitting devices with enhanced operational stability at elevated temperatures [J].
Aziz, H ;
Popovic, ZD ;
Hu, NX .
APPLIED PHYSICS LETTERS, 2002, 81 (02) :370-372
[3]   Enhanced performance of tris-(8-hydroxyquinoline)aluminum-based organic light-emitting devices with LiF/Mg:Ag/Ag cathode [J].
Chen, BJ ;
Sun, XW ;
Wong, KS ;
Hu, X .
OPTICS EXPRESS, 2005, 13 (01) :26-31
[4]   High-efficiency and low-voltage p-i-n electrophosphorescent organic light-emitting diodes with double-emission layers [J].
He, GF ;
Pfeiffer, M ;
Leo, K ;
Hofmann, M ;
Birnstock, J ;
Pudzich, R ;
Salbeck, J .
APPLIED PHYSICS LETTERS, 2004, 85 (17) :3911-3913
[5]   High electron drift mobility in an amorphous film of 2,4,6,-tris[4-(1-naphthyl)phenyl]-1,3,5-triazine [J].
Ishi-i, T ;
Yaguma, K ;
Thiemann, T ;
Yashima, M ;
Ueno, K ;
Mataka, S .
CHEMISTRY LETTERS, 2004, 33 (10) :1244-1245
[6]  
KLENKLER RA, 2006, APPL PHYS LETT, V88, P101
[7]   1,8-naphthalimides in phosphorescent organic LEDs: The interplay between dopant, exciplex, and host emission [J].
Kolosov, D ;
Adamovich, V ;
Djurovich, P ;
Thompson, ME ;
Adachi, C .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (33) :9945-9954
[8]   High electron mobility in bathophenanthroline [J].
Naka, S ;
Okada, H ;
Onnagawa, H ;
Tsutsui, T .
APPLIED PHYSICS LETTERS, 2000, 76 (02) :197-199
[9]  
O'Brien DF, 1998, ADV MATER, V10, P1108, DOI 10.1002/(SICI)1521-4095(199810)10:14<1108::AID-ADMA1108>3.0.CO
[10]  
2-S