High efficiency double-layer white polymer light-emitting diode

Author

Niu, Qiaoli ; Zhang, Yong ; Wang, Yongli ; Wang, Xin

Author_Institution

Dept. of Educ. of Guangdong Province, South China Normal Univ., Guangzhou, China

fYear

2010

fDate

3-6 Dec. 2010

Firstpage

1

Lastpage

4

Abstract

In this presentation, efficient white polymer-light-emitting diodes have been fabricated with double emissive layers. The device structure consists of ITO/poly(ehtlenedioxythiophene): poly(styrene sulfonic acid) (PEDOT: PSS)/poly(N-vinylcarbazole) (PVK) /phenyl-substituted PPV derivative (P-PPV)/poly(9, 9-dioctylfluorene) (PFO)/Ba/Al. By tuning the thickness of the emissive layers, white light was obtained. In EL spectra of the white light, the full width at half maximum (FWHM ) of the green band from P-PPV increased from 79 nm to 110 nm. Therefore, the EL spectra can cover the whole visible area. The 1931 CIE coordinates of the white light emission obtained were (0.31, 0.36). The maximum luminous efficiency is 3.8cd/A.

Keywords

electroluminescence; indium compounds; light emitting diodes; optical fabrication; optical films; optical polymers; optical tuning; visible spectra; ITO; PEDOT-PSS; double emissive layers; double-layer white polymer light-emitting diode; electroluminescence; full width at half maximum; optical fabrication; optical tuning; poly(9, 9-dioctylfluorene); poly(ehtlenedioxythiophene); poly(n-vinylcarbazole); poly(styrene sulfonic acid); visible spectra; Absorption; Color; Films; Flat panel displays; Organic light emitting diodes; Polymers; double-layer; light emitting diode; polymer; white;

fLanguage

English

Publisher

ieee

Conference_Titel

Advances in Optoelectronics and Micro/Nano-Optics (AOM), 2010 OSA-IEEE-COS

Conference_Location

Guangzhou

Print_ISBN

978-1-4244-8393-8

Electronic_ISBN

978-1-4244-8392-1

Type

conf

DOI

10.1109/AOM.2010.5713548

Filename

5713548