In:
Journal of Applied Physics, AIP Publishing, Vol. 101, No. 3 ( 2007-02-01)
Abstract:
Luminescence is a widespread fundamental physical phenomenon. It has a broad application in the field of illumination, display, dosimeter, mining, archaeology, various analyses, etc. Trap and decay are two important, inseparable factors in luminescence dynamic processes, and thermoluminescence, in particular. Of the two most popular techniques of studying the dynamics of this process, the method based on kinetics order has serious deficiencies: (1) a fixed parameter to represent an evolving process and (2) an assumed value, instead of an experimental value, disagrees with reality. We proposed a method of simultaneous determination of trap depth and decay parameters from the glow curve of ZnS:Cu,Co, obtaining the trap depth ε=0.86eV and decay parameter n0¯=2.6 simultaneously. From these data, we have shown dependence of trap depth ε on decay parameter, which clearly shows the error of ε for any assumed decay parameter. If we treat the case of kinetics order α=1 as α=2, the error might be as large as 100%.
Type of Medium:
Online Resource
ISSN:
0021-8979
,
1089-7550
Language:
English
Publisher:
AIP Publishing
Publication Date:
2007
detail.hit.zdb_id:
220641-9
detail.hit.zdb_id:
3112-4
detail.hit.zdb_id:
1476463-5
Permalink