IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Electronics Tuesday Sessions
       Session EL-TuP

Paper EL-TuP22
Codoping of Magnetron-Sputter Deposited ZnS:TbOF with Ce for Electroluminescent Phosphors

Tuesday, October 30, 2001, 5:30 pm, Room 134/135

Session: Electronic Materials Poster Session
Presenter: M.R. Davidson, University of Florida
Authors: J.P. Kim, University of Florida
M.R. Davidson, University of Florida
D. Moorehead, Uniroyal Optoelectronics
M. Puga-Lambers, University of Florida
Q. Zhai, CORNING Lasertron
P.H. Holloway, University of Florida
Correspondent: Click to Email
RF magnetron-sputter deposited ZnS:TbOF thin film electroluminescent (EL) phosphors 1mm ± 10% thick were codoped with Ce and the EL performance tested with 60Hz trapezoidal voltage pulses. The B40 of Ce codoped ZnS:TbOF films annealed at 500°C for 60 minutes was 144 cd/m@super 2@ compared to 86 cd/m@super 2@ for undoped ZnS:TbOF films. Further analysis using XRD, SEM and AFM showed no changes in crystallinity or surface morphology and SIMS analysis showed the Ce concentration to be far below Tb concentration. Electrical Q-V, C-V and L-V measurements indicate that there are changes in the electron transport suggesting that the increase due to Ce codoping of ZnS:TbOF film is likely due to modified space charge in the ZnS:TbOF ilm.