TY - JOUR

T1 - Ozone sensors based on SnO2 films modified by SnO2-Au nanocomposites synthesized by the SILD method

AU - Korotcenkov, G.

AU - Cho, B. K.

AU - Gulina, L.

AU - Tolstoy, V.

PY - 2009/5/6

Y1 - 2009/5/6

N2 - We consider the influence of surface modification by SnO2-Au nanocomposites on the conductivity response of SnO2 films to ozone. SnO2-Au nanocomposites with an Au/Sn ratio ∼1 were synthesized by the Successive Ionic Layer Deposition (SILD) method. The thickness of the Au-SnO2 nanocomposites deposited on the surface of the SnO2 films was controlled through a change of the number of deposition cycles. It was established that the indicated modification promotes optimization of sensor parameters. It was shown that sensors with a modified surface had a higher sensitivity to ozone and a shorter recovery time. An explanation of the observed effects is given.

AB - We consider the influence of surface modification by SnO2-Au nanocomposites on the conductivity response of SnO2 films to ozone. SnO2-Au nanocomposites with an Au/Sn ratio ∼1 were synthesized by the Successive Ionic Layer Deposition (SILD) method. The thickness of the Au-SnO2 nanocomposites deposited on the surface of the SnO2 films was controlled through a change of the number of deposition cycles. It was established that the indicated modification promotes optimization of sensor parameters. It was shown that sensors with a modified surface had a higher sensitivity to ozone and a shorter recovery time. An explanation of the observed effects is given.

KW - Gas sensor

KW - Nanocomposite

KW - SILD

KW - SnO

KW - Surface modification

UR - http://www.scopus.com/inward/record.url?scp=64549126008&partnerID=8YFLogxK

U2 - 10.1016/j.snb.2009.01.058

DO - 10.1016/j.snb.2009.01.058

M3 - Article

AN - SCOPUS:64549126008

VL - 138

SP - 512

EP - 517

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

SN - 0925-4005

IS - 2

ER -