P2.4.10 SnO2 NWs-based sensor prototype for low temperature formaldehyde detection

Event

14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany

Chapter

P2.4 Nanostructured Sensors

Author(s)

I. Castro-Hurtado, G. Mandayo, J. Gonzalez de Chávarri, E. Castaño - Ceit and Tecnun (Spain), I. Gracià, C. Cané, E. Figueras, M. Salleras - Centro Nacional de Microelectrónica, IMB-CSIC, Campus UAB (Spain)

Pages

1528 - 1531

DOI

10.5162/IMCS2012/P2.4.10

ISBN

978-3-9813484-2-2

Price

free

Abstract

In this work the sensing properties of SnO2 NWs were studied and a high sensor response and short response and recovery times were obtained, even at operating temperatures as low as 130 ºC. Also the influence of relative humidity on the sensor response was determined and a good selectivity to three interfering gases ammonia (NH3), benzene (C6H6) and carbon dioxide (CO2) was measured. The SnO2 NWs have been grown in-situ first over an alumina substrate with a heater on the back side, and also on a micro-hotplate structure.