Title :
Study of the contact properties of ZnO nanowires with Ag and Au/Ag
Author :
Tiong, T.Y. ; Yahaya, M. ; Dee, C.F. ; Salleh, M.M. ; Majlis, B.Y.
Author_Institution :
Sch. of Appl. Phys., Univ. Kebangsaan Malaysia, Bangi
Abstract :
Zinc oxide (ZnO) nanowires have been synthesized using thermal evaporation approach on quartz (SiO2) substrates in nitrogen atmosphere with a mixture of milled ZnO and graphite powder as reactants. Ohmic behavior has been obtained for both Ag and Au/Ag contact to ZnO nanowires. The samples were re-examined after annealing at 300degC, 400degC and 500degC. The optimum annealing temperature for obtaining minimum resistance of Ag and Au/Ag contact with ZnO nanowires are 400degC and 300degC respectively. The contact is dominated by Metal-Zinc bonds rather than Metal-Oxygen bonds which cause the formation of ohmic behavior.
Keywords :
II-VI semiconductors; annealing; contact resistance; gold; nanowires; ohmic contacts; semiconductor-metal boundaries; silver; wide band gap semiconductors; zinc compounds; Ag-ZnO; Au-Ag-ZnO; Ohmic behavior; annealing; contact resistance; nanowires; quartz substrates; temperature 300 degC; temperature 400 degC; temperature 500 degC; thermal evaporation; Annealing; Electrodes; Gold; Nanowires; Nitrogen; Powders; Substrates; Temperature; X-ray scattering; Zinc oxide;
Conference_Titel :
Semiconductor Electronics, 2008. ICSE 2008. IEEE International Conference on
Conference_Location :
Johor Bahru
Print_ISBN :
978-1-4244-3873-0
Electronic_ISBN :
978-1-4244-2561-7
DOI :
10.1109/SMELEC.2008.4770387
