E Comini et al 2007 J. Phys. D: Appl. Phys. 40 7255 doi:10.1088/0022-3727/40/23/S08
E Comini, C Baratto, G Faglia, M Ferroni and G Sberveglieri
Show affiliationsZnO nanowires were deposited using the vapour phase technique. The nanowires cover the substrate and appear uniform in morphology with lengths of up to several micrometres and uniform lateral size of the order of tenths of a nanometre. The electrical and optical properties of ZnO nanowires have been characterized in the presence of nitrogen oxide. Electrical measurements highlight a remarkable response even at low operating temperatures, with detection limits lower than 200 ppb and an optimal operating temperature of 100°C, while the ZnO nanowire photoluminescence is reversibly quenched by the introduction of a few ppm of NO2 even at room temperature.
61.46.-w Structure of nanoscale materials
78.67.-n Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
82.80.-d Chemical analysis and related physical methods of analysis
73.63.-b Electronic transport in nanoscale materials and structures
07.07.Df Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
Condensed matter: electrical, magnetic and optical
Instrumentation and measurement
Issue 23 (7 December 2007)
Received 30 March 2007, in final form 24 May 2007
Published 16 November 2007
E Comini et al 2007 J. Phys. D: Appl. Phys. 40 7255
James C L Chow and Grigor N Grigorov 2006 Phys. Med. Biol. 51 N231
A. Savcheva et al 2009 ApJ 702 L32
Chanda J. Jog 2000 ApJ 542 216
Jennifer M. Lotz et al. 2004 ApJ 613 262
E D L Wickham et al 2006 Class. Quantum Grav. 23 S819
A S Alnaser et al 2006 J. Phys. B: At. Mol. Opt. Phys. 39 S485
W Fulop 1957 J. Sci. Instrum. 34 453
A Rogers 1992 J. Phys. A: Math. Gen. 25 6043
Michael Stabin 2006 Phys. Med. Biol. 51 R187