Title :
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
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;
Conference_Titel :
Display Research Conference, 1991., Conference Record of the 1991 International
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-0213-3
DOI :
10.1109/DISPL.1991.167452
