Patent ID: 8513711
Filing Date: 2013-08-20
Classification: G01N

Abstract:
1. A gas-sensitive semiconductor device, comprising: a semiconductive channel which is delimited by a first and a second channel electrode; and a gate electrode which is associated with the channel and which cooperates with the channel in such a way that a change in conductivity of the channel occurs as a response to an action of a gas; wherein at least one of the gate electrode and a gate insulation layer which insulates the gate electrode from the channel has two surface sections which differ in their sensitivity to gases, wherein at least one of the gate electrode, the gate insulation layer and a gate stack layer which is provided between the gate electrode and the channel has two surface sections which differ in their sensitivity to gases, and wherein the gate electrode is divided into two regions which are made of different materials and which correspond to the two surface sections, a region junction of the regions being situated between the channel electrodes.