Structural,morphological and photoluminescence characterizations of Sm^(3+) doped Y_(2)O_(3) nano-sized phosphors synthesized by ultrasound assisted sol-gel method

作     者：Lyes Lamiri Badis Kahouadji Mourad Berd Abdelmoumen Abdellatif Lotfi Benchallal Lakhdar Guerbous Salim Ouhenia Abdelhafid Souici Leila Amiour Abdelhalim Zoukel Madani Samah Lyes Lamiri;Badis Kahouadji;Mourad Berd;Abdelmoumen Abdellatif;Lotfi Benchallal;Lakhdar Guerbous;Salim Ouhenia;Abdelhafid Souici;Leila Amiour;Abdelhalim Zoukel;Madani Samah

作者机构：Department of TCSNUniversity of BejaiaBejaia06000Algeria Department of TechnologyUniversity of BejaiaBejaia06000Algeria Department of TechnologyLaboratory of LECVEUniversity of BejaiaBejaiaO6000Algeria Department of Physics of MaterialsUniversity of Science and Technology Houari BoumedieneAlgiersAlgeria Laser Department/Nuclear Research Center of Algiers(CRNA)02Boulevard Frantz FanonB.P.399Algiers16000Algeria Laboratory of Physical-chemistryUniversity of BejaiaBejaia06000Algeria Phase Transformation LaboratoryUniversite Freres Mentouri Constantine 1Algeria Laboratory Physico-Chemistry of MaterialsLaghouat UniversityTechnical Platform of Physico-Chemical Analysis(PTAPC-Laghouat-CRAPC)LaghouatAlgeria 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2023年第41卷第1期

页      面：51-59页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 1010[医学-医学技术（可授医学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 1009[医学-特种医学] 

基　　金：supported by Nuclear Research Center of Algiers(CRNA) Department of Laser Luminescence Laboratory 

主　　题：Y_(2)O_(3):Sm^(3+)nano-sized powder Sol-gel method Ultrasound Charge transfer Photoluminescence Rare earths 

摘      要：Nanosized 1 at% Sm^(3+)doped Y_(2)O_(3)powders were prepared by an ultrasound assisted sol-gel method.Y_(2)O_(3):Sm^(3+)powders crystallize in Y_(2)O_(3)pure cubic phase and XRD analysis shows that the as-used agitation protocol affects strongly the crystallite’s shape and mean *** recorded emission spectra under λ_(em)=600 nm exhibit two absorption bands;the first one is assigned to O^(2-)→Sm^(3+)charge transfer state(CTS) with a maximum absorption at 223 nm,and the second is due to intraconfigurational transition 4f^(5)-4f^(5) of Sm^(3+) with a maximum absorption at 407 *** 223 and 407 nm transitions are attributed to characteristics intra-configurational transitions of Sm^(3+).All emission spectra are dominated by reddish/orange luminescence located at 606 nm and assigned to ^(4)G_(5/2)→^(6)H_(7/2) *** is found that the photoluminescence intensity of samples obtained under excitation at 407 nm is 60 times smaller than that obtained under 223 nm *** time measurements of the ^(4)G_(5/2)→^(6)H_(7/2) luminescence transition indicate that decay time of nano-sized powder is significantly shorter than bulk material one.