Christian Kameni Boumenou

3 Questions 6 Answers 0 Followers

Questions related from Christian Kameni Boumenou

What is the formula for work function of a degenerated semiconductor material?

Hello everyone. For n-type non- degenerate semiconductor materials, the work function can be given by : ∅= χ+kT/e ln(Nc/n) Where ∅, χ, Nc, n, k and T are the work...

23 June 2016 6,507 2 View

Topographic image taken using Tapping Mode AFM is the real image of surface or the inverse?

Hi I recently took the surface topography of AlN grows on Si substrate using ScanAsyst in air and Tapping Mode in Air AFM. The two image appear opposites. I am confus. Thank you in advance

25 August 2015 7,908 1 View

Why does the KPFM technique require an external applied AC voltage between the probe and the sample for determining contact potential?

During my readings ( in many article) mainly focused in Kelvin Probe Force Microscopy(KPFM), I have remarked that the autors apply an external ac voltage for determing the contact potential...

22 April 2015 1,857 3 View