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Investigation of Li-induced structural disorder and phase transition in ZnO by Raman spectroscopy
Institution:1. Department of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;2. National Laboratory of Solid State Microstructures and Center for Materials Analysis, Nanjing University, Nanjing 210093, China;1. Laboratoire de la Matiére Condensée et des Nanosciences, Département de Physique, Faculté des Sciences University de Monastir, 5019, Tunisia;2. Laboratoire de Photovoltaique, Centre de Recherches et des Tehnologies de l''Energie, BP Hammam-Lif 2050, Tunisia;3. Laboratoire de Physique des Matériaux et des Nanomatériaux Appliquée à L’environnement, Faculté des Sciences de Gabes Cité Erriadh, 6079 Gabes, Tunisia;1. Engineering Laboratory for the Next Generation Power and Energy Storage Batteries, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, PR China;2. Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, PR China;1. School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China;2. Coordination Chemistry Institute, Nanjing University, 210093, China
Abstract:Zn0.8Li0.2O ceramics with wurtzite structure have been fabricated by a solid reaction of ZnO and Li2CO3. The effects of substitutional Li atoms on the crystal structure and structural phase transition of ZnO are studied by Raman spectroscopy. The enhancement of E1(LO) mode in Zn0.8Li0.2O ceramics reveals the occurrence of Li-induced structural disorder. Temperature dependent Raman spectra strongly indicate that a structural phase transition occurs at about 448 K in Zn0.8Li0.2O ceramics.
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