Solution growth of ZnO sub-micro rods enhanced by electric field

Bulletin of the Polish Academy of Sciences. Technical Sciences

T. PisarkiewiczDepartment of Electronics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Krakow, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  T. KenigDepartment of Electronics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Krakow, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  W. MaziarzDepartment of Electronics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Krakow, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  A. RydoszDepartment of Electronics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Krakow, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Department of Electronics, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Krakow, Poland

关键词: Keywords: nanowires;    electrodeposition;    dielectrophoretic effect;    zinc oxide;   

DOI  :  10.2478/v10175-011-0052-8

学科分类：工程和技术（综合）

来源: Polska Akademia Nauk * Centrum Upowszechniania Nauki / Polish Academy of Sciences, Center for the Advancement of Science

【 摘 要 】

Recently the one-dimensional ZnO nanostructures have attracted much attention in gas sensor applications owing to their increased role of the surface. The authors have obtained ZnO rods of sub-micron size using the solution growth method with the growth temperature below 100°C. Investigations indicate that the rods have a well-defined hexagonal morphology and a wurtzite structure. The best uniformity and alignment of the sub-micron crystals was however obtained when electrodeposition from aqueous solution was developed. Sizes of these rods depend on the growth parameters. Moreover electrodeposition leads to a faster growth rate of ZnO sub-micron rods (2 hrs) as compared to the growth from solution (8 hrs). After electrodeposition the rods can be easily reoriented in external electric fields by using substrates with electrodes of appropriate geometry and configuration (dielectrophoretic effect). This enables the preparation of samples which can be used in gas sensor technology.

【 授权许可】

Unknown