Abstract
Electrical properties of Au and Ag Schottky diodes prepared on epiready (0001)Zn surfaces of bulk n-ZnO crystals with electron concentration close to 1017 cm−3 were studied after various surface cleaning treatments. The lowest reverse currents were obtained with simple cleaning of the surface in organic solvents while additional etching of the surface in concentrated HCl or HNO3 substantially increased the reverse current without giving any clear advantages in the ideality factor of the forward current–voltage characteristics or in the accuracy of capacitance–voltage characteristics and deep level spectra measurements. The properties of both the Au and the Ag Schottky diodes were seriously degraded by heating them in vacuum to temperatures higher than about 365 K but the mechanisms of degradation seem to be different for the two metals.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
