How can we explain the barrier height inhomogeneity in Schottky contact?

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Macho Anani

It seems like a Schottky diode could be divided into a high one and a low one.

More than one month and no answer ? How should I deduce from this situation ?

Derle Smith Jr

Dear Macho Anani,

I am not certain that this information will be useful to you (see excerpt and link below); but you might consider looking at it just in case. Cheers, Dr. D.

Excerpt from dissertation found at link next under...

"The linear method is the standard method of extracting SBH (Equation

5.10). The Gaussian method is a popular method for judging inhomogeneous interfaces

(Equation 5.11). The TFE method is the proposed model based upon the TFE

contribution (Equation 5.9). The labels Odd3, Odd5 and Odd7 represent the highest

order term of the odd order polynomial used in the extraction (Equation 5.9). The

method listed as actual is the actual image charge-lowered SBH from the simulated

voltage profile. The variation comes from the small temperature dependence of this

value."

LINK: http://cis.stanford.edu/~saraswat/Thesis/Crystal%20Kenney%20PhD%20Thesis.pdf

(SCHOTTKY BARRIER BAND DIAGRAMS DISS)

Sabih Uddin Omar

Please check the work by Dr. Raymond Tung. It's a generalized version of the parallel conduction model. I found it superior to the gaussian distribution model.

http://journals.aps.org/prb/abstract/10.1103/PhysRevB.45.13509