Schottky effect questions

Hi,

Perhaps I don't understand Schottky effect so well. Must the metal be
a certain thickness? The following page shows some Schottky diode
history, which starts with the Cat's Whisker. Must the metal wire
(Cat's Whisker) that contacts the semiconductor be so thin? Then
there's the point contact Schottky diode that appears to have a thinly
deposited metal. Perhaps the diode would work if the deposited metal
was not very thick, but wouldn't it at least still rectify to some
degree?

http://www.radio-electronics.com/info/data/semicond/schottky_diode/schottky_barrier_diode.php

One last question. Would the Schottky effect work if the metal was
say, Boron, which has extremely high resistance, ~ 1e+12 times higher
than copper?

Thanks for any help,
Paul
.

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