Cleaning of Si and properties of the HfO2Si interface Academic Article uri icon


  • The effect of cleaning method on the properties of HfO2 dielectric and its interface with silicon was studied. Sharper LEED images and longer inhibition of initial oxide regrowth under ambient air were observed on MS-cleaned samples, as compared to RCA cleaned samples. Higher capacitance values obtained on MS-cleaned samples were attributed to lower interfacial oxide thickness. Results demonstrate the importance of surface flatness and complete hydrogen termination in the evaluation of high-k dielectrics.

published proceedings

  • Journal of Vacuum Science & Technology A Vacuum Surfaces and Films

author list (cited authors)

  • Choi, K., Harris, H., Gangopadhyay, S., & Temkin, H.

citation count

  • 16

complete list of authors

  • Choi, K||Harris, H||Gangopadhyay, S||Temkin, H

publication date

  • January 2003