Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Nanocomposite NiO:Au hydrogen sensors with high sensitivity and low operating temperature
Δημιουργός/Συγγραφέας:	[EL] Κάνδυλα, Μαρία[EN] Kandyla, Maria Chatzimanolis-Moustakas C. Koumoulos E.P. Charitidis C. [EL] Κομπίτσας, Μιχάλης[EN] Kompitsas, Michael G.
Ημερομηνία:	2014
Γλώσσα:	Αγγλικά
ISSN:	0025-5408
DOI:	10.1016/j.materresbull.2013.09.044
Περίληψη:	We present results on the development of nanocomposite NiO:Au thin-film hydrogen sensors, which are able to detect hydrogen concentrations as low as 2 ppm in air, operating at low temperatures in the range 125-150 C. Thin NiO films were sputter-deposited on oxidized silicon substrates. The structural, morphological, and nanomechanical properties of the films were investigated with respect to post-deposition annealing. Au nanoparticles were added on the NiO surface via pulsed laser deposition and the films were tested as hydrogen sensors before and after Au deposition. The performance of the NiO films as hydrogen sensors improved significantly in the presence of Au nanoparticles on the surface. The detection limit (lowest detectable hydrogen concentration) decreased by two orders of magnitude, while the response time also decreased by a factor of three.© 2013 Elsevier Ltd. All rights reserved.
Τίτλος πηγής δημοσίευσης:	Materials Research Bulletin
Τόμος/Κεφάλαιο:	49
Τεύχος:	1
Σελίδες:	552-559
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	A. Composites A. Oxides B. Laser deposition B. Sputtering D. Electrochemical properties
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Όροι και προϋποθέσεις δικαιωμάτων:	All Open Access, Green
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο