Title :
Modification of detection process on ZnO sensors by ultraviolet radiation
Author :
Jakub Napravnik;Vladimir Myslik;Martin Vrnata;Filip Vyslouzil;Premysl Fitl;Dusan Kopecky;Jan Vlcek
Author_Institution :
Department of Solid State Engineering, ICT Prague, 166 28, Czech Republic
Abstract :
The contribution deals with influence of radiation in the near UV region (λ = 396 nm) on detection properties of conductive type gas sensors. The ZnO active layers of the sensors were deposited on Alumina substrates by Pulsed Laser Deposition method. Resulting thickness of active layers was ∼ 450 nm. The dc-sensitivity was evaluated from resistance change under exposition of hydrogen and acetone and toluene vapours in synthetic air. The sensitivity to acetone was doubled using the UV radiation at 250°C.
Keywords :
"Radiation detectors","Zinc oxide","Pulsed laser deposition","Temperature sensors","Gas detectors","Optical pulses","Surface morphology","Atmosphere","Temperature dependence","Atmospheric measurements"
Conference_Titel :
Electronics Technology, 2009. ISSE 2009. 32nd International Spring Seminar on
Print_ISBN :
978-1-4244-4260-7
Electronic_ISBN :
2161-2064
DOI :
10.1109/ISSE.2009.5207072
