文献类型：期刊文献

英文题名：Luminescence properties of Bi3+-Activated double perovskite tungstate Ba2GdWO6 phosphors

作者：Chen, Li[1]; Zhu, Fangyin[1]; Yu, Junwen[1]; Zhou, Wenqian[2]; Lai, Nanjia[1]; Li, Xiaohui[1]; Chen, MeiLing[1]; Zheng, Weicheng[1]; Xiong, Zhengye[1]; Guo, Jingyuan[1]

机构：[1] College of Electronic and Information Engineering, Guangdong Ocean University, Zhanjiang, 524088, China; [2] College of Chemistry and Environment, Guangdong Ocean University, Zhanjiang, 524088, China

年份：2026

外文期刊名：Ceramics International

收录：EI(收录号：20261420441097)

语种：英文

外文关键词：Barium compounds - Bismuth compounds - High temperature applications - Irradiation - Light emitting diodes - Perovskite - Radiation damage - Solid state reactions - Tungsten compounds

外文摘要：Double perovskite-type fluorescent materials Ba2GdWO6:x%Bi3+ (x?=?0.1～2.0) were successfully prepared via a high-temperature solid-state reaction method, which possesses dual functional characteristics of photoluminescence (PL) and thermoluminescence (TL). Systematic characterizations revealed that when the Bi3+ doping amount is 1%, the sample exhibits optimal PL performance under near-ultraviolet excitation. At an excitation wavelength of 382?nm, the typical blue emission peak of Bi3+ shows a quantum efficiency of 51.14%, with CIE chromaticity coordinates of (0.155, 0.049), a color purity as high as 91.62%, a correlated color temperature (CCT) of 1721?K, and an activation energy of 0.228?eV. All these indicators meet the application standards of LED phosphors for plant growth.Thermoluminescence analysis indicated that the material exhibits an obvious TL peak around 390?K, and the optimal TL performance is achieved when the Bi3+ doping concentration is 0.2%. Within the irradiation dose range of 0.266～2.1?Gy, the TL intensity shows a good linear relationship with the dose, demonstrating its applicability for low-dose radiation detection. In addition, the samples after X-ray irradiation not only possess high linear responsiveness but also exhibit excellent thermal stability and radiation damage resistance.In summary, the double perovskite tungstate Ba2GdWO6:x%Bi3+ achieves the synergistic optimization of light conversion and radiation response, and has important application value in the fields of plant lighting LEDs and radiation dose monitoring. ? 2026 Elsevier Ltd and Techna Group S.r.l. All rights are reserved, including those for text and data mining, AI training, and similar technologies.