Tuning of crystal phase and luminescence properties of Gd2(MoO4)3:Dy3+ phosphors |
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| Authors: | Wanwan Xia Xiaojie Wang Zuoling Fu Shihong Zhou Siyuan Zhang Jung Hyun Jeong |
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| Affiliation: | 1. State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China;2. Key Lab of Coherent Light, Atomic and Molecular Spectroscopy, Ministry of Education, Changchun 130012, China;3. State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;4. Department of Physics, Pukyong National University, Busan 608-737, South Korea;1. University of Belgrade, Faculty of Physics, Studentski trg 12–16, Belgrade 11000, Serbia;2. University of Belgrade, Vin?a Institute of Nuclear Sciences, P.O. Box 522, Belgrade 11001, Serbia;1. Key Laboratory of Advanced Civil Engineering Materials of the Ministry of Education, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, 4800 Cao''an Road, Shanghai 201804, China;2. The Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;4. State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;1. Department of Materials Science and Engineering, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen, Guangdong 518055, PR China;2. Department of Materials Science and Engineering, South University of Science and Technology of China, Shenzhen, Guangdong 518055, PR China;3. Department of Physics and Materials Science, City University of Hong Kong, Hong Kong Special Administrative Region;1. Department of LED convergence Engineering, Pukyong National University, Busan 48513, Republic of Korea;2. Cooperative Laboratory Center, Pukyong National University, Busan 48513, Republic of Korea |
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| Abstract: | The orthorhombic and monoclinic Gd2(MoO4)3:Dy3+ were successfully synthesized by a hydrothermal process with a subsequent annealing treatment at 800 °C for 4 h. The crystal phase of Gd2(MoO4)3:Dy3+ was controlled as a function of the pH value of the solution. The crystallization and microstructures of the samples were characterized by Powder X-ray diffraction (XRD) and scanning electron micrograph (SEM). Furthermore, the optical properties were investigated by the diffuse reflection, excitation and emission spectra. The mechanisms of different crystal phases affected on the luminescence properties of Gd2(MoO4)3:Dy3+ were discussed. The electric dipole–dipole interaction between Dy3+ ions was identified as the main mechanism for the concentration quenching of the two structures. Finally, the chromatic natures of all the samples were analyzed in detail. The results indicate that the orthorhombic phosphor Gd1.84(MoO4)3:Dy0.163+ can be considered as a suitable candidate for white light emitting diodes (W-LEDs). |
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