Recombination luminescence between trapped electrons and self-trapped holes in SrCl2doped with alkali cations after X-irradiation

Content Provider	Scilit
Author	Rzepka, E. Lefrant, S. Taurel, L. Chapelle, J. P.
Copyright Year	1977
Description	Journal: Journal of Physics C: Solid State Physics After X-irradiation in the range 10-145K, $SrCl_{2}$ doped with $M^{+}(M^{+}=Na^{+},K^{+},Rb^{+}$) gives rise to a post-luminescence whose spectrum, independent of the $M^{+}$ cation nature, is formed principally of a broad band at 500 nm. The hyperbolic law of isothermal decay of post-luminescence $(I_{t}$=C $N_{0}$-t where $N_{0}$ is the initial number of $V_{k}$ centres) suggests that this emission is due to a tunnelling recombination between $V_{k}$ and perturbed F-centres. While between 10 and 38K the coefficient C does not depend on T, at higher temperatures the value of C is very sensitive to the X-irradiation temperature. In particular, in the range 35-100K, the behaviour of the coefficient C with temperature is well explained by the motion of $V_{k}$-centres viewed as small polarons.
Related Links	http://iopscience.iop.org/article/10.1088/0022-3719/10/13/005/pdf
Ending Page	2293
Page Count	9
Starting Page	2285
ISSN	00223719
DOI	10.1088/0022-3719/10/13/005
Journal	Journal of Physics C: Solid State Physics
Issue Number	13
Volume Number	10
Language	English
Publisher	IOP Publishing
Publisher Date	1977-07-14
Access Restriction	Open
Subject Keyword	Journal: Journal of Physics C: Solid State Physics Condensed Matter Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Condensed Matter Physics Engineering