Study of charge carrier trapping by EPR and TSL methods in ZnxMg1-xWO4 single crystals

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00517932" target="_blank" >RIV/68378271:_____/19:00517932 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.optmat.2019.109362" target="_blank" >https://doi.org/10.1016/j.optmat.2019.109362</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.optmat.2019.109362" target="_blank" >10.1016/j.optmat.2019.109362</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Study of charge carrier trapping by EPR and TSL methods in ZnxMg1-xWO4 single crystals

Popis výsledku v původním jazyce

Charge carrier trapping was studied using EPR and TSL methods in ZnWO4, MgWO4 and mixed ZnxMg1-xWO4 crystals. An electron trapped at a perturbed W site was detected in MgWO4. It was also shown that holes are trapped at oxygen ions thus forming O− centers. Two different O- centers, one perturbed by a cation vacancy, another by Al impurity, were found in MgWO4, while a single hole center perturbed by Cd impurity and hydroxyl group nearby was detected in ZnWO4. The number of non-equivalent hole centers increases up to five for the mixed crystals due to the perturbations induced by statistically distributed substitutional cations. It is shown that the thermal release of holes is accompanied by thermostimulated luminescence (TSL). The broadening of the TSL peaks typically observed in mixed crystals is connected with the increase of the number of non-equivalent trapping centers of the same type.n

Název v anglickém jazyce

Study of charge carrier trapping by EPR and TSL methods in ZnxMg1-xWO4 single crystals

Popis výsledku anglicky

Charge carrier trapping was studied using EPR and TSL methods in ZnWO4, MgWO4 and mixed ZnxMg1-xWO4 crystals. An electron trapped at a perturbed W site was detected in MgWO4. It was also shown that holes are trapped at oxygen ions thus forming O− centers. Two different O- centers, one perturbed by a cation vacancy, another by Al impurity, were found in MgWO4, while a single hole center perturbed by Cd impurity and hydroxyl group nearby was detected in ZnWO4. The number of non-equivalent hole centers increases up to five for the mixed crystals due to the perturbations induced by statistically distributed substitutional cations. It is shown that the thermal release of holes is accompanied by thermostimulated luminescence (TSL). The broadening of the TSL peaks typically observed in mixed crystals is connected with the increase of the number of non-equivalent trapping centers of the same type.n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Optical Materials

ISSN

0925-3467

e-ISSN

—

Svazek periodika

96

Číslo periodika v rámci svazku

Oct

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

000496866100093

EID výsledku v databázi Scopus

2-s2.0-85072022210