Field effect transistor gas sensor having a housing and porous catalytic material contained therein

US8418527B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Richard Fix · Gerlingen, DE
• Markus Widenmeyer · Schenefeld, DE
• Alexander Martin · Regensburg, DE
• Dieter Elbe · Sachsenheim, DE

Key dates

• Filing date: Jul 30, 2008
• Grant date: Apr 16, 2013
• Expiry date: Aug 30, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A50/20
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A gas sensor for determining gas components in gas mixtures, e.g., for exhaust gases of internal combustion engines, includes a housing and a sensor element configured as a field effect transistor which has source, drain, and gate electrodes applied on a semiconductor substrate. A porous, catalytically active material is provided inside the housing of the gas sensor.