Directed emissive high efficient white transparent organic light emitting diodes with double layered capping layers

被引：30

作者：

Huh, Jin Woo ^{[1
]}

Moon, Jaehyun ^{[1
]}

Lee, Joo Won ^{[1
]}

Cho, Doo-Hee ^{[1
]}

Shin, Jin-Wook ^{[1
]}

Han, Jun-Han ^{[1
]}

Hwang, Joohyun ^{[1
]}

Joo, Chul Woong ^{[1
]}

Chu, Hye Yong ^{[1
]}

Lee, Jeong-Ik ^{[1
]}

机构：

[1] Elect & Telecommun Res Inst, OLED Lighting Res Team, Taejon 305700, South Korea

来源：

ORGANIC ELECTRONICS | 2012年 / 13卷 / 08期

关键词：

Transparent organic light-emitting diodes; Capping layer; Directed emission; High efficiency; Spectra matching; DEVICES;

D O I：

10.1016/j.orgel.2012.04.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on white transparent organic light emitting diode (TOLED) with double layered capping layer (CL), 1,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC) and ZnSe. By introducing the double layered CL, total efficiency was improved by 27% to have 90% of that of conventional bottom-emissive device. The achievement of highly improved efficiency was interpreted as the synergetic effect of constructive interference and maximized reflectance of CL. By adjusting the reflectance of the CL, it was possible to choose the emissions direction selectively and achieve spectral matching between top and bottom emissions as well as enhanced total efficiency in white TOLED. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：1386 / 1391

页数：6

共 15 条

[1] Transparent light-emitting devices [J].

Bulovic, V ;

Gu, G ;

Burrows, PE ;

Forrest, SR ;

Thompson, ME .

NATURE, 1996, 380 (6569) :29-29

[2] Transparent organic light-emitting devices with LiF/Mg:Ag cathode [J].

Chen, BJ ;

Sun, XW ;

Tan, SC .

OPTICS EXPRESS, 2005, 13 (03) :937-941

[3] Highly transparent organic light-emitting diodes with a metallic top electrode: the dual role of a Cs2CO3 layer [J].

Cho, Hyunsu ;

Choi, Jung-Min ;

Yoo, Seunghyup .

OPTICS EXPRESS, 2011, 19 (02) :1113-1121

[4]

Coldren L. A., 1995, DIODE LASERS PHOTONI

[5] Outcoupling efficiency in small-molecule OLEDs: from theory to experiment [J].

Furno, Mauro ;

Meerheim, Rico ;

Thomschke, Michael ;

Hofmann, Simone ;

Luessem, Bjoern ;

Leo, Karl .

LIGHT-EMITTING DIODES: MATERIALS, DEVICES, AND APPLICATIONS FOR SOLID STATE LIGHTING XIV, 2010, 7617

[6] Highly efficient top emitting organic light-emitting diodes with organic outcoupling enhancement layers [J].

Huang, Q ;

Walzer, K ;

Pfeiffer, M ;

Lyssenko, V ;

He, GF ;

Leo, K .

APPLIED PHYSICS LETTERS, 2006, 88 (11)

[7] The Optical Effects of Capping Layers on the Performance of Transparent Organic Light-Emitting Diodes [J].

Huh, Jin Woo ;

Moon, Jaehyun ;

Lee, Joo Won ;

Cho, Doo-Hee ;

Shin, Jin-Wook ;

Han, Jun-Han ;

Hwang, Joohyun ;

Joo, Chul Woong ;

Lee, Jeong-Ik ;

Chu, Hye Yong .

IEEE PHOTONICS JOURNAL, 2012, 4 (01) :39-47

[8] Application of an ultrathin LiF/Al bilayer in organic surface-emitting diodes [J].

Hung, LS ;

Tang, CW ;

Mason, MG ;

Raychaudhuri, P ;

Madathil, J .

APPLIED PHYSICS LETTERS, 2001, 78 (04) :544-546

[9] Influence of organic capping layers on the performance of transparent organic light-emitting diodes [J].

Lee, Jonghee ;

Hofmann, Simone ;

Furno, Mauro ;

Thomschke, Michael ;

Kim, Yong Hyun ;

Luessem, Bjoern ;

Leo, Karl .

OPTICS LETTERS, 2011, 36 (08) :1443-1445

[10] Interlayer Engineering with Different Host Material Properties in Blue Phosphorescent Organic Light-Emitting Diodes [J].

Lee, Jonghee ;

Lee, Jeong-Ik ;

Lee, Joo-Won ;

Chu, Hye Yong .

ETRI JOURNAL, 2011, 33 (01) :32-38

← 1 2 →