Luminance improvement of blue- and white-emitting SrS TFEL devices by annealing in Ar-S atmosphere

Author

Tanaka, Shosaku ; Morita, Haruvuki ; Yamada, Kimihiko ; Kobayashi, Hideo

Author_Institution

Dept. of Electr. & Electron. Eng., Tottori Univ., Japan

fYear

1991

fDate

15-17 Oct. 1991

Firstpage

137

Lastpage

140

Abstract

The authors have succeeded in improving the luminance levels of the blue SrS:Ce,K and white SrS:Ce,K,Eu TFEL (thin-film electroluminescent) devices by post-deposition annealing in an Ar-S atmosphere. It has been shown that the increase in the luminance and efficiency results from the improvement of the crystallinity of the thin films. The luminance level achieved for white TFEL reached the goal of realizing a monochrome white TFEL display. The SrS TFEL device showed a luminance of 900 cd/m/sup 2/ and an efficiency of 0.44 lm/W at 1 kHz drive.<>

Keywords

annealing; argon; cerium; electroluminescent displays; europium; phosphors; potassium; strontium compounds; sulphur; thin film devices; 1 kHz; Ar-S atmosphere; SrS; SrS:Ce,K; SrS:Ce,K,Eu; blue emitting display; crystallinity; efficiency; luminance; monochrome white display; post-deposition annealing; Annealing; Argon; Atmosphere; Dielectric substrates; Dielectric thin films; Electrodes; Phosphors; Sputtering; Temperature; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Display Research Conference, 1991., Conference Record of the 1991 International

Conference_Location

San Diego, CA, USA

Print_ISBN

0-7803-0213-3

Type

conf

DOI

10.1109/DISPL.1991.167452

Filename

167452