Patent ID: 7391056
Filing Date: 2008-06-24
Classification: G01N,H01L

Abstract:
1. An apparatus comprising: a metal-semiconductor Schottky diode comprising: a silicon substrate; an ultrathin metal film located on a portion of said silicon substrate; said ultrathin metal film and said silicon substrate together forming a Schottky barrier having the current-voltage characteristics of a diode thereby enabling detection of a surface adsorbate on said ultrathin metal film; wherein the presence of said surface adsorbate creates a measurable current resulting from production of electrons or holes having sufficient energy to transverse said ultrathin metal film and cross said Schottky barrier; an oxide layer formed on said silicon substrate and having an inclination formed therein; and at least one zero force electrical contact including a metalized contact electrically connected to said ultrathin metal film; said metalized contact being deposited on said oxide layer and wherein said ultrathin metal includes a portion deposited on top of said inclination in the oxide layer before being connected to the metalized contact.