Xiaowei Zhang, Dashuai Sun, Pengcheng Luo, Luhui Zhou, Zheng Lu, Jia Liu, Congcong Fan, Xinyu Ye, Hongpeng You
{"title":"Tunable luminescence via Cr3+–Yb3+/Nd3+ energy transfer in Cr3+ and Yb3+/Nd3+ coactivated NIR phosphors for non-destructive analysis","authors":"Xiaowei Zhang, Dashuai Sun, Pengcheng Luo, Luhui Zhou, Zheng Lu, Jia Liu, Congcong Fan, Xinyu Ye, Hongpeng You","doi":"10.1039/d4qi02260b","DOIUrl":null,"url":null,"abstract":"For efficient near-infrared (NIR) emitters, tuning their luminescence properties is important for their extended optical applications. A fundamental study of garnet-type inorganics has led to the development of a new NIR phosphor Y<small><sub>3</sub></small>ScAl<small><sub>4</sub></small>O<small><sub>12</sub></small>:Cr<small><sup>3+</sup></small> (YSAO:Cr<small><sup>3+</sup></small>), exhibiting emission in the range of 600 to 950 nm, an internal quantum efficiency (IQE) of 84.01%, and good thermal stability at 423 K (89.7% of that at room temperature). Doping with Yb<small><sup>3+</sup></small>/Nd<small><sup>3+</sup></small> ions helps achieve an efficient energy transfer from the Cr<small><sup>3+</sup></small> to Yb<small><sup>3+</sup></small>/Nd<small><sup>3+</sup></small> ions with excellent thermal stability. NIR pc-LED devices prepared using YSAO:Cr<small><sup>3+</sup></small>,Yb<small><sup>3+</sup></small> and YSAO:Cr<small><sup>3+</sup></small>,Nd<small><sup>3+</sup></small> can achieve high NIR output powers of 46.37 and 42.82 mW at 100 mA and photoconversion efficiencies of 20.27 and 18.84% at a driving current of 20 mA, respectively. Furthermore, the NIR pc-LED package demonstrated excellent capability for penetrating biological tissues, effectively distinguishing between pork, chicken, and beef. These results suggest that the phosphors can be utilized for non-destructive monitoring applications.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":null,"pages":null},"PeriodicalIF":6.1000,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Chemistry Frontiers","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1039/d4qi02260b","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
For efficient near-infrared (NIR) emitters, tuning their luminescence properties is important for their extended optical applications. A fundamental study of garnet-type inorganics has led to the development of a new NIR phosphor Y3ScAl4O12:Cr3+ (YSAO:Cr3+), exhibiting emission in the range of 600 to 950 nm, an internal quantum efficiency (IQE) of 84.01%, and good thermal stability at 423 K (89.7% of that at room temperature). Doping with Yb3+/Nd3+ ions helps achieve an efficient energy transfer from the Cr3+ to Yb3+/Nd3+ ions with excellent thermal stability. NIR pc-LED devices prepared using YSAO:Cr3+,Yb3+ and YSAO:Cr3+,Nd3+ can achieve high NIR output powers of 46.37 and 42.82 mW at 100 mA and photoconversion efficiencies of 20.27 and 18.84% at a driving current of 20 mA, respectively. Furthermore, the NIR pc-LED package demonstrated excellent capability for penetrating biological tissues, effectively distinguishing between pork, chicken, and beef. These results suggest that the phosphors can be utilized for non-destructive monitoring applications.