Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5150425 | Solid State Ionics | 2017 | 4 Pages |
Abstract
The small radius hole polarons (self-trapped holes (STH) known also as the Vk centers) are very common color centers observed in numerous alkali halides and alkaline-earth halides. Their mobility controls the rate of secondary reactions between electron and hole defects and thus radiation stability/sensitivity of materials. We have analysed here the correlation between the temperatures at which hole polarons start migration in a series of alkali halides (fluorites, chlorides, bromides, iodides) and the lattice displacement around quasi-molecule. These results are especially important for identification of the self-trapped holes, for example, in novel scintillating materials such as SrI2, as well as in a large family of perovskite halides and more complex halide materials.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
A.I. Popov, E.A. Kotomin, J. Maier,