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Co-doping effects of (Al, Ti, Mg) on the microstructure and electrical behavior of ZnO-based ceramics
Sun, QY; Li, GR; Tian, T; Zeng, JT; Zhao, KY; Zheng, LY; Barre, M; Dittmer, J; Gouttenoire, F; Rousseau, A; Kassiba, AH
2020-03-01
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN0002-7820
Issue5Pages:3194
SubtypeArticle
AbstractCo-doped ZnO-based ceramics using Al, Ti, and Mg ions in different ratios were synthesized with the objective to investigate the doping effects on the crystalline features, microstructure and the electrical behavior. For Al and Ti doping, a coexistence of crystalline phases was shown with a major wurtzite ZnO structure and secondary spinel phases (ZnAl2O4, Zn2TiO4, or ZnaTibAlcOd), while Mg doping did not alter significantly the structural features of the wurtzite ZnO phase. The electrical behavior induced by Al, Ti, and Mg co-doping in different ratios was investigated using Raman, electron paramagnetic resonance (EPR) and Al-27 and Zn-67 solid-state nuclear magnetic resonance (NMR). Al doping induces a high electrical conductivity compared to other doping elements. In particular, shallow donors from Zn-i-Al-Zn defect structures are inferred from the characteristic NMR signal at about 185 ppm; that is, quite far from the usual oxygen coordinated Al. The Knight shift effect emanating from a highly conducting Al-doped ZnO ceramics was considered as the origin of this observation. Oppositely, as Ti doping leads to the formation of secondary spinel phases, EPR analysis shows a high concentration of Ti3+ ions which limit the electrical conductivity. The correlation between the structural features at the local order, the involved defects and the electrical behavior as function of the doping process are discussed.
DOI10.1111/jace.16999
WOS KeywordTEMPERATURE THERMOELECTRIC PROPERTIES ; DOPED-ZNO ; PARAMAGNETIC-RESONANCE ; POWER-FACTOR ; PHOTOLUMINESCENCE ; CONDUCTIVITY ; ALUMINUM ; DEFECTS ; AL-27 ; ORDER
Language英语
WOS Research AreaMaterials Science
PublisherWILEY
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28367
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Sun, QY,Li, GR,Tian, T,et al. Co-doping effects of (Al, Ti, Mg) on the microstructure and electrical behavior of ZnO-based ceramics[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2020(5):3194.
APA Sun, QY.,Li, GR.,Tian, T.,Zeng, JT.,Zhao, KY.,...&Kassiba, AH.(2020).Co-doping effects of (Al, Ti, Mg) on the microstructure and electrical behavior of ZnO-based ceramics.JOURNAL OF THE AMERICAN CERAMIC SOCIETY(5),3194.
MLA Sun, QY,et al."Co-doping effects of (Al, Ti, Mg) on the microstructure and electrical behavior of ZnO-based ceramics".JOURNAL OF THE AMERICAN CERAMIC SOCIETY .5(2020):3194.
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