Oussama AitMellal , Mohamed Youssef Messous , Sara Ait Bouzid , Khalid Nouneh , Mihail Secu , Arpad Mihai Rostas
{"title":"Tunable Blue-to-Orange-Red Emission in LaPO4: Sb3+/Mn2+ Phosphors: Multiple emission centers for LED applications","authors":"Oussama AitMellal , Mohamed Youssef Messous , Sara Ait Bouzid , Khalid Nouneh , Mihail Secu , Arpad Mihai Rostas","doi":"10.1016/j.materresbull.2025.113618","DOIUrl":null,"url":null,"abstract":"<div><div>This study explores synthesizing and characterizing LaPO<sub>4</sub>:Sb<sup>3+</sup>/ <figure><img></figure> (LSBMx) phosphors (x = 0%–5%) prepared via the co-precipitation method. Structural analysis and luminescence properties reveal that LSBM0 (without Mn<sup>2+</sup>) emits blue light under UV excitation, while Mn<sup>2+</sup>-doped samples exhibit tunable emission from blue to orange-red. Under UV excitation, LSBMx phosphors demonstrate a broad visible emission band with multiple peaks attributed to the <figure><img></figure> transition of Mn<sup>2+</sup>. The broad emission band (520–660 nm) can be deconvoluted into four Gaussian components centered at 564 nm (Mn-I), 595 nm and 616 nm (Mn-II), and 648 nm (Mn-III), corresponding to Mn<sup>2+</sup> in La<sup>3+</sup> sites due to charge inconsistency, crystal field modifications induced by Sb<sup>3+</sup> incorporation, and Mn<sup>2+</sup> - Mn<sup>2+</sup> dimers, respectively. Energy transfer efficiency calculations determine the optimal Mn<sup>2+</sup> concentration to be approximately 3%. This novel phosphor system demonstrates versatile green, orange, and red emission capabilities, establishing a valuable framework for developing Mn<sup>2+</sup>-doped luminescent materials with potential applications in LED lighting technology.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"193 ","pages":"Article 113618"},"PeriodicalIF":5.3000,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Research Bulletin","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0025540825003265","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
This study explores synthesizing and characterizing LaPO4:Sb3+/ (LSBMx) phosphors (x = 0%–5%) prepared via the co-precipitation method. Structural analysis and luminescence properties reveal that LSBM0 (without Mn2+) emits blue light under UV excitation, while Mn2+-doped samples exhibit tunable emission from blue to orange-red. Under UV excitation, LSBMx phosphors demonstrate a broad visible emission band with multiple peaks attributed to the transition of Mn2+. The broad emission band (520–660 nm) can be deconvoluted into four Gaussian components centered at 564 nm (Mn-I), 595 nm and 616 nm (Mn-II), and 648 nm (Mn-III), corresponding to Mn2+ in La3+ sites due to charge inconsistency, crystal field modifications induced by Sb3+ incorporation, and Mn2+ - Mn2+ dimers, respectively. Energy transfer efficiency calculations determine the optimal Mn2+ concentration to be approximately 3%. This novel phosphor system demonstrates versatile green, orange, and red emission capabilities, establishing a valuable framework for developing Mn2+-doped luminescent materials with potential applications in LED lighting technology.
期刊介绍:
Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.