MULTI SCALE RARE EARTH CRYSTAL MATERIALS AND THEIR APPLICATIONS |
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Electronegativity Evaluation of Charge Transfer Transition Theory of Rare Earth Ions and Its Application in Quantum Regulation Luminescence |
SHI Guoqiang, XUE Dongfeng*
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Multiscale Crystal Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China |
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Abstract The interaction between microscopic particles in the luminescence process can be attributed to quantum behavior. As the carrier of luminescence, rare earth crystalline materials contain many degrees of freedom including lattice, charge, spin and orbit. Rare earth ions can be regarded as an inorganic lattice active dopant in crystals. Due to the large radius of rare earth ions, their doping into the crystal is easy to cause lattice distortion, forms vacancy defects, and further leads to changes in the electronic structure and lattice environment of the crystal, forming defects, lattice, electronic structure and other multiscale structures. The defects caused by the doping of rare earth ions can be attributed to the local symmetry broken, which affects the lattice degree of freedom. In addition, the complexity of rare earth ion f electrons leads to the instability of charge, spin, orbit and other degrees of freedom in the system. Therefore, the essence of luminescence sources in rare earth crystalline materials can be determined by the multiple degrees of freedom coupling method. By evaluating the charge transfer transition theory of rare earth ions through electronegativity, we can integrate the lattice degree of freedom of ionic scale and the charge, spin and orbital degrees of freedom of electronic scale in rare earth crystalline materials, and realize the quantum control of luminescence of rare earth crystalline materials. This paper mainly discusses the electronegativity evaluation of charge transfer transition theory of rare earth ions and its application in quantum controlled luminescence.
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Published: 10 February 2023
Online: 2023-02-23
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Fund:The Key Program of National Natural Science Foundation of China (NSFC) (51832007), International Cooperation and Exchanges of NSFC (52220105010), 2021 Sino-German Cooperation and Exchange Program of the Sino-German Science Center of the National Natural Science Foundation (M-0755), National Natural Science Foundation Youth Fund of China (52203366), Major Basic Research Project of Shandong Natural Science Foundation (ZR2020ZD35), Research and Development Project of Shandong Institute of Industrial Technology (Z1250020005), China Postdoctoral Science Foundation (2021M703363), and Guangdong Provincial Basic and Applied Basic Research Fund Committee Regional Joint Fund-Youth Fund Project (2021A1515110936). |
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