{"title":"Bi3+-driven defect formation and related optical multimode in luminescent ferroelectrics Sm3+-doped LiNbO3","authors":"D.J. Lee, Y.S. Lee","doi":"10.1016/j.jlumin.2024.120879","DOIUrl":null,"url":null,"abstract":"<div><p>We investigated a novel inorganic photochromic material, Sm<sup>3+</sup> and Bi<sup>3+</sup>-codoped LiNbO<sub>3</sub>, which was synthesized using a traditional high-temperature solid-state method. In our samples, Sm<sup>3+</sup> acted as an orange-red luminescence center, whereas the codopant Bi<sup>3+</sup> created traps within the host lattice. Doping with Bi<sup>3+</sup> suppressed the orange-red emission of Sm<sup>3+</sup> and significantly improved the UV–visible photoswitching photochromic (PC) behavior and the related photoluminescence modulation associated with defect formation by Bi<sup>3+</sup>. Moreover, our samples exhibited good persistent luminescence in close relation to the PC behavior. Furthermore, our samples retained their ferroelectric properties even after doping with Sm<sup>3+</sup>/Bi<sup>3+</sup>. These excellent optical properties suggest that Sm<sup>3+</sup> and Bi<sup>3+</sup>-codoped LiNbO<sub>3</sub> can be promising inorganic photochromic materials for optical information storage.</p></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":null,"pages":null},"PeriodicalIF":3.3000,"publicationDate":"2024-09-05","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/S0022231324004435","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
We investigated a novel inorganic photochromic material, Sm3+ and Bi3+-codoped LiNbO3, which was synthesized using a traditional high-temperature solid-state method. In our samples, Sm3+ acted as an orange-red luminescence center, whereas the codopant Bi3+ created traps within the host lattice. Doping with Bi3+ suppressed the orange-red emission of Sm3+ and significantly improved the UV–visible photoswitching photochromic (PC) behavior and the related photoluminescence modulation associated with defect formation by Bi3+. Moreover, our samples exhibited good persistent luminescence in close relation to the PC behavior. Furthermore, our samples retained their ferroelectric properties even after doping with Sm3+/Bi3+. These excellent optical properties suggest that Sm3+ and Bi3+-codoped LiNbO3 can be promising inorganic photochromic materials for optical information storage.
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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