Lithium solubility limit in ZnGa2O4:Bi0.0013+,Li+ phosphor |
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| Affiliation: | 1. Institute of Physics and Applied Physics, Yonsei University, Seoul, 120-749, Korea;2. School of Liberal Arts, Korea University of Technology and Education, Cheonan, 330-708, Korea;1. ?ukasiewicz Research Network - Institute of Microelectronics and Photonics, Wólczyńska 133, 01-919, Warsaw, Poland;2. Pavlodar Pedagogical University, Mira 60, 140000, Pavlodar, Kazakhstan;3. Institute of Physics, University of Tartu, W. Ostwaldi 1, 50411, Tartu, Estonia;4. Lviv Polytechnic National University, Bandera 12, 79013, Lviv, Ukraine;5. Institute of Physics, Polish AS, Al. Lotników 32/46, 02-668, Warsaw, Poland;1. College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, PR China;2. Engineering Research Center of New Energy Storage Devices and Applications, Chongqing University of Arts and Sciences, Chongqing 402160, PR China;3. School of Physics and Opto-Electronic Technology, Baoji University of Arts and Sciences, Baoji 721016, Shaanxi, PR China;1. Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao 266109, People’s Republic of China;2. Qingdao Bona Biomimetic Composite Research Institute Co. Ltd., People’s Republic of China;1. School of Chemistry & Chemical Engineering, Mianyang Teachers’ College, Mianyang 621000, PR China;2. School of Chemistry & Chemical Engineering, Southwest University, Chongqing 400700, PR China;3. School of Mathematics & Physics, Mianyang Teachers’ College, Mianyang 621000, PR China;4. Research Center of Computational Physics, Mianyang Teachers’ College, Mianyang 621000, PR China;5. Department of Material Science, Sichuan University, Chengdu 610064, PR China;1. Leshan Ecological Environment Monitoring Center of Sichuan Province, Leshan, 614000, China;2. School of Physics and Telecommunications Engineering, Zhoukou Normal University, Zhoukou, 466001, China;3. Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China |
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| Abstract: | The lithium solubility limit, photoluminescence (PL) and photoluminescence excitation (PLE) properties of lithium ion co-activated ZnGa2O4:Bi3+,Li+ phosphor have been investigated. A LiGaO2 second phase began to appear from 3 mol% Li+ ion co-activated ZnGa2O4:Bi3+,Li+ phosphor. The enhanced brightness of blue (λex = 254 nm) and white (λex = 315 nm) colors of bismuth ions doped ZnGa2O4:Bi3+,Li+ phosphor was assigned to the formation of LiGaO2. Bi3+ activated lithium zinc gallate phosphor showed a more enhanced PLE peak around 315 nm than that of lithium zinc gallate phosphor when λem = 520 nm. Thus, we observed that the PL intensity of ZnGa2O4:Bi3+,Li+ phosphor with λem = 520 nm was much greater than that of ZnGa2O4:Li+ phosphor. Also, ZnGa2O4:Bi3+,Li+ phosphor exhibited a shorter decay time than that of ZnGa2O4:Li+ phosphor by about a factor of about 2. |
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