发光学报2025，Vol.46Issue(11)：2087-2095,9.DOI:10.37188/CJL.20250159
近红外二区荧光粉Y2GeO5:Cr4+制备与发光性质
Preparation and Luminescent Properties of Near-infrared-Ⅱ Phosphor Y2GeO5:Cr4+
摘要
Abstract
Due to the widespread applications of near-infrared(NIR)light in medical diagnosis,food inspec-tion,and biological detection,the demand for broadband long-wavelength fluorescent powders in the NIR-Ⅱ region has become increasingly urgent.In this work,a series of Y2GeOs:Cr4+(YG:Cr4+)broadband NIR-Ⅱ phosphors were successfully synthesized via a high-temperature solid-state method.At the optimal Cr doping concentration,the synthesized YG:0.7％Cr4+NIR-Ⅱ phosphor exhibited broadband NIR-Ⅱ emission peaking at 1 330 nm under 469 nm blue light excitation,demonstrating an emission bandwidth of 267 nm in full-width-at-half-maximum(FWHM).Crystal structure analysis and spectroscopic characterization,combined with low-tem-perature emission/excitation spectra,confirmed that the broadband NIR-Ⅱ emission originates from the spin-al-lowed 3T2→3A2 transition of Cr4+ions occupying Ge4+lattice sites.Additionally,the prepared YG:0.7％Cr4+NIR-Ⅱ phosphor was successfully employed for qualitative detection of water,ethanol,and sunflower seed oil,as well as freshness assessment of pear slices.These demonstrations highlight the material's promising potential in non-destructive testing applications.关键词
近红外二区荧光粉/宽带发射/Cr4+掺杂/无损检测Key words
near-infrared Ⅱ phosphor/broadband emission/Cr4+doping/non-destructive testing分类
数理科学引用本文复制引用
杜晨,张志忠,魏同成,戴鹏鹏..近红外二区荧光粉Y2GeO5:Cr4+制备与发光性质[J].发光学报,2025,46(11):2087-2095,9.基金项目
国家自然科学基金(52262029) （52262029）
新疆维吾尔自治区自然科学基金(2022TSYCCX0016) （2022TSYCCX0016）
新疆师范大学青年科技创新人才项目(XJNUQB2022-15) （XJNUQB2022-15）
新疆维吾尔自治区自然科学青年基金(2024D01B60)Supported by National Natural Science Foundation of China(52262029) （2024D01B60）
Natural Science Foundation of Xinjiang Uygur Auton-omous Region(2022TSYCCX0016) （2022TSYCCX0016）
Project of Youth Science and Technology Innovation Talent Project of Xinjiang Normal University(XJNUQB2022-15) （XJNUQB2022-15）
Natural Science Youth Foundation of Xinjiang Uygur Autonomous Region(2024D01B60) （2024D01B60）
