Energy transfer to luminescent impurity by thermally quenching excitons in CdWO4:Sm

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00538907" target="_blank" >RIV/68378271:_____/20:00538907 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.jlumin.2020.117609" target="_blank" >https://doi.org/10.1016/j.jlumin.2020.117609</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jlumin.2020.117609" target="_blank" >10.1016/j.jlumin.2020.117609</a>

Result language
angličtina
Original language name
Energy transfer to luminescent impurity by thermally quenching excitons in CdWO4:Sm
Original language description
CdWO4:Sm single crystals were studied by different spectroscopies in the temperature range of 4–750 K. A hopping diffusion of self-trapped excitons and energy transfer to Sm3+ centres is demonstrated. The mechanism of energy transfer includes the formation of a Sm3+ bound exciton either by direct excitation or in the result of a thermally stimulated hopping diffusion of self-trapped excitons as well as a sequential trapping of charge carriers near the Sm3+ ions. The energy transfer from the perturbed excitons to Sm3+ ions is controlled by an electric dipole-dipole or exchange interaction and it is terminated in the temperature range of 450–650 K due to the thermal destruction of Sm3+-perturbed excitons. In the case of nearsurface excitations created in the energy region of high absorption coefficients by 5-eV photons, the Sm3+ emission is additionally quenched by surface-induced quenching centres.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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