Optical properties of YMASG:Ce fluorescent ceramics prepared by hot-pressure sintering |
| |
| Affiliation: | 1. Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, 3001, Leuven, Belgium;2. Aurubis, Nieuwe Dreef 33, 2340, Beerse, Belgium;3. Mineral Based Lithium Extraction Cell, RIST, Cheongam-ro 67, 37673, Pohang, South Korea;1. Department of Mechanical Engineering, University of Idaho, Moscow, ID, 83844, USA;2. Mechanical & Industrial Engineering Department, IIT Roorkee, Roorkee, Uttarakhand, 247667, India;1. College of Optoelectronic Engineering, Chengdu University of Information Technology, Chengdu, 610025, People''s Republic of China;2. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, People''s Republic of China;3. School of Electronic Information and Automation, Aba Teachers University, Sichuan, 623002, People''s Republic of China;1. School of Metallurgy, Northeastern University, NO.3-11, Wenhua Road, Heping District, Shenyang, 110819, China;2. State Key Laboratory of Rolling and Automation, Northeastern University, NO.3-11, Wenhua Road, Heping District, Shenyang, 110819, China;3. Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China;1. School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China;2. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, China;1. Department of Materials Science and Engineering, National Chung Hsing University, 145 Xingda Rd, South Dist, Taichung City, 40227, Taiwan;2. WEI CHIH STEEL INDUSTRIAL CO., LTD, No.123, Nanbu, Guantian Dist., Tainan City, 720006, Taiwan;3. Academy of Circular Economy Industrial and Intelligent Technology Program, National Chung Hsing University, No. 15, Guangming Rd., Nantou County 540, Taiwan |
| |
| Abstract: | Cerium-doped yttrium aluminum garnet (YAG:Ce) based transparent ceramics have been widely used in fluorescent lighting as high-quality inorganic fluorescent conversion materials. This paper further explores the Mg2+-Si4+ ions doped YAG:Ce transparent ceramics by combining the solid-phase reaction method with vacuum hot-pressure sintering and implementing protection measures against hot-pressure mold contamination, and also investigates the effect of different Mg2+-Si4+ doping contents on the structure, transmittance and luminescence properties of the ceramics under hot-pressure sintering. In this work, pure-phase YMASG:Ce transparent fluorescent ceramics with a grain size of about 3-6 μm and clear and clean grain boundaries were obtained with an In-line transmittance of 67% at 800 nm. Under the excitation at 460 nm, the emission peak was red-shifted by 26 nm and the full width at half maxima (FWHM) was broadened with the increase of Mg2+-Si4+ content, which shows that the Mg2+-Si4+ ion pair effectively complements the absence of the red light component in the YAG:Ce emission spectrum. The optimized YMASG:Ce ceramics obtained high-quality warm white light with a low correlated color temperature (CCT) and a high color rendering index (CRI) under the excitation of the blue LED chip. This work proved the feasibility of vacuum hot-pressure sintering to prepare YMASG:Ce transparent fluorescent ceramics, and provided a new approach for studying YMASG:Ce-based ceramics, which was significant for the application of high-power visible laser illumination. |
| |
| Keywords: | Hot-pressure sintering YMASG:Ce Fluorescent ceramics Luminescent materials |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
