A near-infrared phosphor MgGaBO4:Cr3+ promisingly for photomedicine application

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-05-06 DOI:10.1016/j.materresbull.2025.113540

Shuanghong Wei , Yan’Guang Guo , Zhanchuang Lu , Aoyun Li , Bo Wang , Zhi Zhao , Lei Chen

{"title":"A near-infrared phosphor MgGaBO4:Cr3+ promisingly for photomedicine application","authors":"Shuanghong Wei , Yan’Guang Guo , Zhanchuang Lu , Aoyun Li , Bo Wang , Zhi Zhao , Lei Chen","doi":"10.1016/j.materresbull.2025.113540","DOIUrl":null,"url":null,"abstract":"<div><div>A near-infrared (NIR) phosphor MgGaBO4:Cr3+ phosphor with three peaks at about 688, 696, and 711 nm of a continuous emission band was reported. The three emission peaks were attributed to the two centers of Cr3+, which take the sites of Ga3+ and Mg2+, respectively, in crystal lattice, as identified with the parity-forbidden 2E→4A2 transition at low temperature in assistance with XRD Rietveld refinement. The multiple overlap of parity-allowed 4T2→4A2 transition and parity-forbidden 2E→4A2 transition of each Cr3+ center forms a broadband emission spectrum. Despite of low luminous efficiency, the phosphor shows well thermal stability of luminescence, whose intensity at 100 °C keeps 92 % of that at 20 °C. An LED device was packaged using the optimal MgGaBO4:Cr3+ phosphor, whose emission spectrum covers the absorption band of cytochrome c oxidase peaked at 760 nm and 820 nm well, to show its potential for photomedicine application.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"191 ","pages":"Article 113540"},"PeriodicalIF":5.3000,"publicationDate":"2025-05-06","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/S002554082500248X","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

A near-infrared (NIR) phosphor MgGaBO₄:Cr³⁺ phosphor with three peaks at about 688, 696, and 711 nm of a continuous emission band was reported. The three emission peaks were attributed to the two centers of Cr³⁺, which take the sites of Ga³⁺ and Mg²⁺, respectively, in crystal lattice, as identified with the parity-forbidden ²E→⁴A₂ transition at low temperature in assistance with XRD Rietveld refinement. The multiple overlap of parity-allowed ⁴T₂→⁴A₂ transition and parity-forbidden ²E→⁴A₂ transition of each Cr³⁺ center forms a broadband emission spectrum. Despite of low luminous efficiency, the phosphor shows well thermal stability of luminescence, whose intensity at 100 °C keeps 92 % of that at 20 °C. An LED device was packaged using the optimal MgGaBO₄:Cr³⁺ phosphor, whose emission spectrum covers the absorption band of cytochrome c oxidase peaked at 760 nm and 820 nm well, to show its potential for photomedicine application.

查看原文本刊更多论文

一种具有光医学应用前景的近红外荧光粉mggabo4cr3 +

报道了一种近红外（NIR）荧光粉MgGaBO4:Cr3+荧光粉，该荧光粉在连续发射波段约688、696和711 nm处有三个峰。这3个发射峰是由于Cr3+的两个中心在晶格中分别占据了Ga3+和Mg2+的位置，借助于XRD Rietveld细化，在低温下发现了奇偶禁止2E→4A2转变。每个Cr3+中心的奇偶允许4T2→4A2跃迁和奇偶禁止2E→4A2跃迁的多重重叠形成宽带发射光谱。尽管发光效率较低，但荧光粉具有良好的发光热稳定性，其在100℃时的发光强度保持在20℃时的92%。利用最佳MgGaBO4:Cr3+荧光粉封装了LED器件，其发射光谱覆盖了细胞色素c氧化酶在760 nm和820 nm的吸收波段，显示了其在光电医学上的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

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.