文献类型：期刊文献

英文题名：Samarium doping effects on molybdate phosphor with high color rendering index and its application

作者：Wei, Chao Zhang, Jie Ran, Jingyu Zhang, Zuotai Ran, Mengcheng Lin, Shikai Yang, Cheng Su, Xiangdong

第一作者：Wei, Chao

机构：[1] Guizhou Phosphogypsum Institute, Guizhou Institute of Technology, Guiyang, 550003, China; [2] Collaborative Innovation Center of Guizhou Province for Efficient Utilization of Phosphorus and Fluorine Resources, Guizhou University, Guiyang, 550025, China; [3] The Key Laboratory of Chemical Admixture Science and Technology of Guizhou Province Higher Education Institutions, Guiyang, 550003, China; [4] Key Laboratory of Municipal Solid Waste Recycling Technology and Management of Shenzhen City, Southern University of Science and Technology, Shenzhen, 518055, China

第一机构：贵州理工学院

通信机构：Guizhou Phosphogypsum Institute, Guizhou Institute of Technology, Guiyang, 550003, China;Guizhou Phosphogypsum Institute, Guizhou Institute of Technology, Guiyang, 550003, China|贵州理工学院;

年份：2025

外文期刊名：Ceramics International

收录：EI(收录号：20250117622659);Scopus(收录号：2-s2.0-85213521058)

语种：英文

外文关键词：Gallium compounds - Photoluminescence - Photoluminescence spectroscopy - Samarium compounds - Semiconductor doping

摘要：In this research, we synthesized Sm3+-activated molybdate K5La(MoO4)4 (KLM) red phosphors through a solid-phase reaction method. The samples were systematically characterized in terms of crystal structure, phase composition, morphology, optical properties, and various applications. Upon 403 nm excitation, the photoluminescence spectrum of the phosphor exhibited four prominent emission peaks due to the 4f-4f transitions of Sm3+ ions. Notably, at 423 K, the emission intensity of the KLM:0.04Sm3+ phosphor was 82.6 % of that at 298 K. LED devices fabricated with a commercial 395 nm LED chip and KLM:0.04Sm3+ phosphor showed significant spectral overlap with the absorption spectra of chlorophyll a and the photosensitive pigment PR, meeting the photonic requirements for plant growth and development. The white light-emitting diodes (w-LEDs) demonstrated a high color rendering index (Ra) of 95.14 and a suitable correlated color temperature (CCT) of 5245 K. The optical temperature dependence of the KLM:4%Sm3+ phosphor was analyzed using the luminescence intensity ratio technique, showing excellent relative sensitivity for temperature measurement (SR = 0.258 % K?1). These results indicate the potential applications of the synthesized phosphors in w-LEDs, plant growth lighting, and optical temperature sensors, all of which have significant practical value. ? 2024