{"title":"Luminescence and upconversion properties of Pr3+-doped CsSrF3 fluoroperovskite","authors":"Nadiia Rebrova","doi":"10.1016/j.jlumin.2025.121190","DOIUrl":null,"url":null,"abstract":"<div><div>Praseodymium-doped compounds exhibiting visible-to-UVC upconversion are currently being extensively researched for potential applications in disinfection and sterilization. This study, for the first time, investigates the luminescence and upconversion properties of CsSrF<sub>3</sub>:Pr<sup>3+</sup>. Crystallites activated with varying concentrations of Pr<sup>3+</sup> were synthesized using the solid-state method. Under direct <sup>3</sup>P<sub>2</sub> excitation, upconversion emission was observed in the UVC region (230–310 nm), along with visible emission spanning 465–750 nm. The influence of Pr<sup>3+</sup> doping concentration on the phosphor's characteristics was systematically analyzed. To elucidate the mechanism responsible for upconversion in CsSrF<sub>3</sub>:Pr<sup>3+</sup> crystallites, the dependence of emission intensity on laser pump power and the upconversion lifetime under pulsed laser excitation were measured.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"281 ","pages":"Article 121190"},"PeriodicalIF":3.3000,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Luminescence","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022231325001309","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Praseodymium-doped compounds exhibiting visible-to-UVC upconversion are currently being extensively researched for potential applications in disinfection and sterilization. This study, for the first time, investigates the luminescence and upconversion properties of CsSrF3:Pr3+. Crystallites activated with varying concentrations of Pr3+ were synthesized using the solid-state method. Under direct 3P2 excitation, upconversion emission was observed in the UVC region (230–310 nm), along with visible emission spanning 465–750 nm. The influence of Pr3+ doping concentration on the phosphor's characteristics was systematically analyzed. To elucidate the mechanism responsible for upconversion in CsSrF3:Pr3+ crystallites, the dependence of emission intensity on laser pump power and the upconversion lifetime under pulsed laser excitation were measured.
期刊介绍：
The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid.
We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.
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