发光学报2026，Vol.47Issue(6)：997-1007,11.DOI:10.37188/CJL.20260084
基于Sc2Mo3O12:Dy3+负热猝灭特性的光学测温研究
Optical Thermometry Based on Negative Thermal Quenching Characteristics of Sc2Mo3O12:Dy3+
摘要
Abstract
Negative thermal expansion(NTE)matrices offer an effective strategy to suppress thermal quenching of rare-earth luminescence for high-sensitivity optical thermometry.Herein,a series of NTE Sc2Mo3O12:xDy3+phos-phors were synthesized via solid-state reaction.Rietveld refinement confirms pure orthorhombic phase(Pbcn)with Dy3+occupying Sc3+sites.Under 468 nm excitation,the phosphors exhibit characteristic Dy3+yellow emission with tunable color from yellow to yellow-green.Benefiting from the NTE host and thermally activated[MoO4]2-→Dy3+en-ergy transfer,an anomalous negative thermal quenching is observed(303～393 K),where emission intensity increas-es with temperature.Based on this characteristic,we constructed two luminescence intensity ratio(LIR)thermomet-ric modes:a single-emission-center non-thermally coupled mode(with absolute sensitivity Sa=12％·K-1 and relative sensitivity Sr=0.45％·K-1 at 513 K)and a dual-excitation non-thermally coupled mode(with Sa=1.38％·K-1 and Sr=0.77％·K-1 at 513 K).The material exhibits excellent thermal cycling reversibility.Integrating NTE synergy,anoma-lous thermal enhancement,and high sensitivity,Sc2Mo3O12:xDy3+shows great promise for high-temperature optical thermometry.关键词
Sc2Mo3O12/Dy3+/负热猝灭/负热膨胀/光学温度传感/发光强度比Key words
Sc2Mo3O12/Dy3+/negative thermal quenching/negative thermal expansion/optical thermometry/lumi-nescence intensity ratio(LIR)分类
数理科学引用本文复制引用
牛金艳,马永红,程晨,于晓波,贺帅,管倩,沈宇,李赫,乔君,潮洛蒙..基于Sc2Mo3O12:Dy3+负热猝灭特性的光学测温研究[J].发光学报,2026,47(6):997-1007,11.基金项目
国家自然科学基金(52266014) （52266014）
内蒙古自治区"英才兴蒙"工程项目(2025TGL05) （2025TGL05）
内蒙古自治区自然科学基金(2023MS05013,2025LHMS01006) （2023MS05013,2025LHMS01006）
内蒙古自治区教育厅项目(NJZY22433) （NJZY22433）
内蒙古科技大学创新基金Supported by National Natural Science Foundation of China(52266014) （52266014）
Elite Revitalizing Inner Mongolia Program(2025TGL05) （2025TGL05）
Natural Science Foundation of Inner Mongolia Autonomous Region(2023MS05013,2025LHMS01006) （2023MS05013,2025LHMS01006）
The Inner Mongolia Autonomous Region Education Department Project(NJZY22433) （NJZY22433）
Inner Mongolia University of Science and Technology Inno-vation Fund （）
