Blue organic light-emitting diode based on 1,2,3,4,5-pentaphenyl-1-(8-phenyl-1,7-octadiynyl)silole

Author

Chen, Haiying ; Chen, Junwu ; Qiu, Chengfeng ; Tang, Ben Zhong ; Wong, Man ; Kwok, Hoi-Sing

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China

Volume

10

Issue

1

fYear

2004

Firstpage

10

Lastpage

15

Abstract

A new silole derivative, 1,2,3,4,5-pentaphenyl-1-(8-phenyl-1,7-octadiynyl)silole, is synthesized, characterized, and used as the electron-transport/emission layers in organic light-emitting diodes. Blue emission at 492 nm is observed, with a maximum luminance of 10 460 cd/m² at 18 V. The respective maximum current and power efficiencies are 8.47 cd/A and 3.8lm/W. A triple-layer composite cathode was used, consisting of tris(8-hydroxy-quinolne)aluminum (Alq₃) lithium fluoride and aluminum. The dependence of emission efficiency on the thickness of TPD and Alq₃ is investigated and explained.

Keywords

brightness; cathodes; optical fabrication; organic light emitting diodes; organic semiconductors; semiconductor device testing; visible spectra; 1,2,3,4,5-pentaphenyl-1-(8-phenyl-1,7-Octadiynyl)Silole; 492 nm; aluminum; blue emission; blue organic light emitting diode; electron-transport/emission layers; interface charge; luminance; organic light emitting diodes; quantum efficiency; silole derivative; triple-layer composite cathode; tris(8-hydroxy-quinolne) aluminum lithium fluoride; Aluminum; Cathodes; Chemical technology; Fluorescence; Glass; Liquid crystals; Lithium compounds; Organic light emitting diodes; Phosphorescence; Silicon;

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/JSTQE.2004.824101

Filename

1288067