AVS 46th International Symposium
    Thin Films Division Monday Sessions
       Session TF-MoP

Paper TF-MoP26
Oxide Thin Films for Electroluminescent Phosphors

Monday, October 25, 1999, 5:30 pm, Room 4C

Session: Poster Session
Presenter: J.S. Lewis, University of Florida
Authors: J.S. Lewis, University of Florida
P.H. Holloway, University of Florida
Correspondent: Click to Email
The use of oxide phosphors for thin-film electroluminescent (TFEL) displays has been investigated. Thin films of Zn@sub 2@GeO@sub 4@:Mn were deposited by RF magnetron sputtering from powder targets. The devices exhibited a brightness value of 85 cd/m@super 2@ versus 100 cd/m@super 2@ for the traditional ZnS:TbOF, another green emitting phosphor. The Zn@sub 2@GeO@sub 4@:Mn devices emit in the green with CIE color coordinates x = 0.30 and y = 0.66, which is a more saturated green than ZnS:TbOF. These data show that the performance of oxide phosphors rival that of the traditional sulfide based phosphors. Introduction of surface roughness and further optimization of processing should improve the values even further. Data from blue-emitting oxides will also be presented, as will injection layer schemes which should improve charge injection and lead to lower threshold voltages.