The visible photoluminescence (PL) of tin oxide nanobelts is quenched by nitrogen dioxide at ppm level in a fast (time scale order of seconds) and reversible way. Besides, the response seems highly selective toward humidity and other polluting species, such as CO and NH3. We believe that adsorbed gaseous species that create surface states can quench PL by creating competitive nonradiative paths. A comparison between conductometric and PL response suggests that the two responses are ascribable to different adsorption processes. (C) 2005 American Institute of Physics.

Adsorption effects of NO2 at ppm level on visible photoluminescence response of SnO2 nanobelts

Faglia G;Sberveglieri G;Zha M;Zappettini A
2005

Abstract

The visible photoluminescence (PL) of tin oxide nanobelts is quenched by nitrogen dioxide at ppm level in a fast (time scale order of seconds) and reversible way. Besides, the response seems highly selective toward humidity and other polluting species, such as CO and NH3. We believe that adsorbed gaseous species that create surface states can quench PL by creating competitive nonradiative paths. A comparison between conductometric and PL response suggests that the two responses are ascribable to different adsorption processes. (C) 2005 American Institute of Physics.
2005
Istituto dei Materiali per l'Elettronica ed il Magnetismo - IMEM
OPTICAL-PROPERTIES
GROWTH
LUMINESCENCE
NANORIBBONS
SENSORS
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/53476
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