Electrophosphorescence of a Thiocyanate-Bridging Dimeric Cyclometalated Iridium(III) Complex

Author

Tong, Bihai ; Han, Zhao

Author_Institution

Coll. of Metall. & Resources, Anhui Univ. of Technol., Ma´´anshan, China

fYear

2012

fDate

21-23 May 2012

Firstpage

1

Lastpage

3

Abstract

The eletrophosphorescence properties of a neutral dimeric cyclometalated iridium complex, [{Ir(μ-SCN)(pqcm)2}2], was reported. With the device structures of ITO/PEDOT:PSS(40 nm)/PVK(70):PBD(30):Ir complex(0.5-2)(70 nm)/TPBI(30 nm)/CsF(1.5 nm)/Al(120 nm), the polymer organic light-emitting devices based on the new Ir(III) complex exhibit a peak electrophosphorescence wavelength of 655 nm. Its maximum external quantum efficiency is 12.2% and the maximum luminance efficiency is 4.1 Cd A-1. The turn-on voltage is 6.1 V with the Commission Internationale de L´Eclairage (CIE) coordinates of (0.66, 0.30).

Keywords

brightness; conducting polymers; organic light emitting diodes; phosphorescence; device structures; electrophosphorescence; maximum external quantum efficiency; maximum luminance efficiency; polymer organic light emitting device; thiocyanate bridging dimeric cyclometalated iridium(III) complex; turn-on voltage; voltage 6.1 V; Color; Doping; Metals; Organic light emitting diodes; Phosphorescence; Polymers;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics and Optoelectronics (SOPO), 2012 Symposium on

Conference_Location

Shanghai

ISSN

2156-8464

Print_ISBN

978-1-4577-0909-8

Type

conf

DOI

10.1109/SOPO.2012.6270556

Filename

6270556