Wang Tao, Gao Bingkai, Li Jiehong, Wang Zhijun, Li Panlai
College of Science, China University of Petroleum (East China), Qingdao 266580, China.
Hebei Key Laboratory of Optic-Electronic Information and Materials, College of Physics Science & Technology, Hebei University, Baoding 071002, China.
Molecules. 2023 Dec 13;28(24):8059. doi: 10.3390/molecules28248059.
Cr-doped SrGaGeO:0.03Cr (SGGO:0.03Cr) phosphor was synthesized via a high-temperature solid-phase method. Considering the tunable structure of SGGO, Ga ions in the matrix were substituted with In ions at a certain concentration. The tuned phosphor produced a red-shifted emission spectrum, with its luminescence intensity at 423 K maintained at 63% of that at room temperature; moreover, the internal quantum efficiency increased to 65.60%, and the external quantum efficiency correspondingly increased to 21.94%. On this basis, SGIGO:0.03Cr was encapsulated into a -LED, which was applied in non-destructive testing (NDT) experiments, successfully realizing the recognition of water and anhydrous ethanol, proving its potential application in the field of NDT.
采用高温固相法合成了Cr掺杂的SrGaGeO:0.03Cr（SGGO:0.03Cr）荧光粉。考虑到SGGO结构的可调性，在基质中以一定浓度用In离子取代Ga离子。调谐后的荧光粉发射光谱发生红移，其在423 K时的发光强度保持在室温时的63%；此外，内量子效率提高到65.60%，外量子效率相应提高到21.94%。在此基础上，将SGIGO:0.03Cr封装到一个LED中，并应用于无损检测（NDT）实验，成功实现了对水和无水乙醇的识别，证明了其在无损检测领域的潜在应用。
