ac anddc electroluminescence in CaS:Cu,Sm phosphors |
| |
Authors: | S Bhushan F S Chandra |
| |
Affiliation: | (1) Department of Physics, Ravishankar University, 492 010 Raipur, India |
| |
Abstract: | Theac anddc electroluminescence in CaS:Cu, Sm have been investigated. The luminescence spectra show three peaks in the visible region. The brightness-voltage dependence satisfies the relationB=B 0 exp (−b/V 1/2) with two modes of variation. The nature of this dependence indc andac at different frequencies is discussed. The electroluminescence brightness also depends on the temperature of the phosphors and shows a peak around 80.0;C. The electroluminescence efficiency increases with applied voltage up to 2200 V and this dependence on V is explained on the basis of a transport process of the Schottky emission type. |
| |
Keywords: | Electroluminescence CaS phosphors |
本文献已被 SpringerLink 等数据库收录! |
|