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Controllable microstructure tailoring for regulating conductivity in Al-doped ZnO ceramics
Sun, QY; Li, GR; Tian, T; Man, ZY; Zheng, LY; Barre, M; Dittmer, J; Goutenoire, F; Kassiba, AH
2020-02-01
Source PublicationJOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
Issue2Pages:349
SubtypeArticle
AbstractStructural and electrical behavior of Al2O3 doped ZnO-based ceramics were investigated as function of the aluminum doping ratios under reducing sintering atmosphere (N-2 + CO). With Al2O3 doping from 0.1 mol% to 0.55 mol%, the electrical conductivity increases firstly to a maximum (1.52 x 10(5) S.m(-1)) at 0.25 mol%, and then decreases gradually. The increased conductivity is explained by the formation of shallow donors as Al-zn-Zn-i complexes with doping to 0.25 mol%. As Al(2)O(3 )doping further increasing to 0.55 mol%, ZnAl2O4 spinel phase and more ZnO-ZnO grain boundaries are formed, hindering charge carriers transport, to decrease charge carrier mobility, thus to decrease the conductivity of ZnO ceramics. Therefore, the Al-zn-Zn, complexes, grain boundaries and ZnAl2O4 spinel can be adjusted by doping different Al2O3 amount, thus the carriers' concentration and their mobility are optimized to increase the conductivity. Our work, as a fundamental research, is of great significance to control conductivity by regulating Al2O3 doping.
DOI10.1016/j.jeurceramsoc.2019.10.011
WOS KeywordELECTRICAL-PROPERTIES ; THERMOELECTRIC PROPERTIES ; PHASE-EQUILIBRIA ; VARISTOR ; TIO2 ; PHOTOLUMINESCENCE ; RESISTIVITY ; PROPERTY ; MGO
Language英语
WOS Research AreaMaterials Science
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28352
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. Controllable microstructure tailoring for regulating conductivity in Al-doped ZnO ceramics[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2020(2):349.
APA Sun, QY.,Li, GR.,Tian, T.,Man, ZY.,Zheng, LY.,...&Kassiba, AH.(2020).Controllable microstructure tailoring for regulating conductivity in Al-doped ZnO ceramics.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY(2),349.
MLA Sun, QY,et al."Controllable microstructure tailoring for regulating conductivity in Al-doped ZnO ceramics".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY .2(2020):349.
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