Open AccessWhite ACPEL Device with ZnS:Cu,Cl, Tb 3 Al 5 O 12 :Ce 3+ , and CaS:Eu 2+ Phosphors Using a Layered Structure
Author(s) -
Park Bong Je,
Seo g Seok,
Ahn Jun Tae,
Oh Dae Kon,
Chung Woon Jin,
Han Ji Yeon,
Jang Ho Seong,
Jeon Duk Young
Publication year - 2009
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.09.0209.0235
Subject(s) - phosphor , luminance , electroluminescence , color rendering index , materials science , white light , analytical chemistry (journal) , chemistry , optoelectronics , optics , physics , nanotechnology , chromatography , layer (electronics)
Improvement of the color rendering index (CRI) and luminance of a white alternate current powder electroluminescent (ACPEL) device has been attempted using ZnS:Cu,Cl, Tb 3 Al 5 O 12 :Ce (TAG:Ce), and CaS:Eu phosphors with a layered structure. The device with TAG:Ce and ZnS:Cu,Cl phosphors showed a CRI of 75, with a luminance increase of about 30% depending on the thickness of the TAG:Ce. Further CRI improvement was attempted using CaS:Eu. When they were separately screen‐printed, the CRI was increased up to 89 with no decrease in luminance.