文献类型：期刊文献

英文题名：Luminescent properties and highly sensitive ultra-broad temperature sensing characteristics of Na2Ca2Sc2Si3O12 phosphors doped with Tb3+

作者：Zheng, Weicheng[1];Chen, Meiling[1];Yu, Junwen[1];Zhu, Fangyin[1];Luo, Fangyan[1];Xiong, Zhengye[1];Guo, Jingyuan[1]

机构：[1]Guangdong Ocean Univ, Sch Elect & Informat Engn, Zhanjiang 524088, Peoples R China

年份：2025

卷号：51

期号：22

起止页码：36233

外文期刊名：CERAMICS INTERNATIONAL

收录：SCI-EXPANDED(收录号：WOS:001562399800001)、、EI(收录号：20252218514971)、Scopus(收录号：2-s2.0-105006603721)、WOS

基金：Doctoral Start-up Fund Project (Grant No. 060302112102); Zhanjiang Science and Technology Program Project (Grant No. 2022A05022); and Key Areas Special Project for Higher Education Institutions in Guangdong Province (Grant No. 2024ZDZX4062) are appreciated because of their financial support.

语种：英文

外文关键词：Tb3+; Luminescence; Luminescence intensity ratio (LIR)-Based; thermometry; Optical temperature sensing

外文摘要：In this study, Na2Ca2-xSc2Si3O12: xTb3+ (x = 1, 2, 3, 5, 10, 12, and 15 mol%) series phosphors were synthesized by high-temperature solid-phase method for use in optical temperature sensors and for regulating LED emission colour applications. By comparing the X-ray excited luminescence (XEL) spectra and the photoluminescence (PL) spectra under UV excitation, it was found that the intensity difference between 5D4 -> 7F5 emission and 5D4 -> 7F6 emission under X-ray excitation is much larger, thereby enhancing the fluorescence intensity ratio (FIR). The use of X-ray excitation is more favorable to improve the sensitivity of the optical temperature sensor. Compared to other Tb3+ ion-doped optical temperature sensors, this phosphor has an ultra-wide temperature measurement range (from 120 K-720 K) and high thermal sensitivity (Sr = 4.21 % K-1, at 120 K). In addition, a shift of the CIE chromaticity coordinate from blue to green was observed with increasing concentration. The results indicate that the Na2Ca2-xSc2Si3O12: x mol% Tb3+ phosphor has a strong potential in optical temperature measurement, modulation of LED emission color and X-ray displays.