Elena Trofimova , Sergey Omelkov , Ivo Romet , Marco Kirm , Vladimir Pustovarov , Fabio Piccinelli
{"title":"掺Pr3+和共掺Na+和Mg2+的LiSrPO4的发光特性和能量转移过程","authors":"Elena Trofimova , Sergey Omelkov , Ivo Romet , Marco Kirm , Vladimir Pustovarov , Fabio Piccinelli","doi":"10.1016/j.jlumin.2021.118455","DOIUrl":null,"url":null,"abstract":"<div><p><span>The paper studies the influence of co-doping with alkali metal ions (Na</span><sup>+</sup>, Mg<sup>2+</sup>) on fast interconfigurational 5<em>d-4f</em> luminescence in LiSrPO<sub>4</sub> doped with Pr<sup>3+</sup>. Na<sup>+</sup> and Mg<sup>2+</sup><span> ions were introduced in order to provide charge compensation and modify the electronic configuration of the materials. Luminescent<span><span> properties of the powder samples were investigated using time-resolved pulsed cathodoluminescence and </span>luminescence spectroscopy in the UV-VUV spectral region. The obtained results were compared with those obtained earlier on LiSrPO</span></span><sub>4</sub>:Pr<sup>3+</sup> without co-dopants. With introduction of the co-dopants, slight changes in relative luminescence intensity and decay time of Pr<sup>3+</sup> ion <em>4f</em><sup><em>1</em></sup><em>5d</em><sup><em>1</em></sup><em>-4f</em><sup><em>2</em></sup><span> radiative transitions<span> were found. The study revealed a complex interplay between defects of crystalline structure and impurity ions leading to the peculiarities in energy relaxation processes. Energy transfer leading to the delayed recombination processes is responsible for significant afterglow in Pr</span></span><sup>3+</sup><em>4f</em><sup><em>1</em></sup><em>5d</em><sup><em>1</em></sup><em>-4f</em><sup><em>2</em></sup> emission.</p></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"240 ","pages":"Article 118455"},"PeriodicalIF":3.6000,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jlumin.2021.118455","citationCount":"1","resultStr":"{\"title\":\"Luminescence properties and energy transfer processes in LiSrPO4 doped with Pr3+ and co-doped with Na+ and Mg2+\",\"authors\":\"Elena Trofimova , Sergey Omelkov , Ivo Romet , Marco Kirm , Vladimir Pustovarov , Fabio Piccinelli\",\"doi\":\"10.1016/j.jlumin.2021.118455\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><span>The paper studies the influence of co-doping with alkali metal ions (Na</span><sup>+</sup>, Mg<sup>2+</sup>) on fast interconfigurational 5<em>d-4f</em> luminescence in LiSrPO<sub>4</sub> doped with Pr<sup>3+</sup>. Na<sup>+</sup> and Mg<sup>2+</sup><span> ions were introduced in order to provide charge compensation and modify the electronic configuration of the materials. Luminescent<span><span> properties of the powder samples were investigated using time-resolved pulsed cathodoluminescence and </span>luminescence spectroscopy in the UV-VUV spectral region. The obtained results were compared with those obtained earlier on LiSrPO</span></span><sub>4</sub>:Pr<sup>3+</sup> without co-dopants. With introduction of the co-dopants, slight changes in relative luminescence intensity and decay time of Pr<sup>3+</sup> ion <em>4f</em><sup><em>1</em></sup><em>5d</em><sup><em>1</em></sup><em>-4f</em><sup><em>2</em></sup><span> radiative transitions<span> were found. The study revealed a complex interplay between defects of crystalline structure and impurity ions leading to the peculiarities in energy relaxation processes. Energy transfer leading to the delayed recombination processes is responsible for significant afterglow in Pr</span></span><sup>3+</sup><em>4f</em><sup><em>1</em></sup><em>5d</em><sup><em>1</em></sup><em>-4f</em><sup><em>2</em></sup> emission.</p></div>\",\"PeriodicalId\":16159,\"journal\":{\"name\":\"Journal of Luminescence\",\"volume\":\"240 \",\"pages\":\"Article 118455\"},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2021-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/j.jlumin.2021.118455\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Luminescence\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022231321005718\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Luminescence","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022231321005718","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}
Luminescence properties and energy transfer processes in LiSrPO4 doped with Pr3+ and co-doped with Na+ and Mg2+
The paper studies the influence of co-doping with alkali metal ions (Na+, Mg2+) on fast interconfigurational 5d-4f luminescence in LiSrPO4 doped with Pr3+. Na+ and Mg2+ ions were introduced in order to provide charge compensation and modify the electronic configuration of the materials. Luminescent properties of the powder samples were investigated using time-resolved pulsed cathodoluminescence and luminescence spectroscopy in the UV-VUV spectral region. The obtained results were compared with those obtained earlier on LiSrPO4:Pr3+ without co-dopants. With introduction of the co-dopants, slight changes in relative luminescence intensity and decay time of Pr3+ ion 4f15d1-4f2 radiative transitions were found. The study revealed a complex interplay between defects of crystalline structure and impurity ions leading to the peculiarities in energy relaxation processes. Energy transfer leading to the delayed recombination processes is responsible for significant afterglow in Pr3+4f15d1-4f2 emission.
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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