Synthesis and characterization of Cu-doped ZnO one-dimensional structures for miniaturized sensor applications with faster response
Abbreviated Journal Title
Sens. Actuator A-Phys.
ZnO; Crystal; Sensor; Microrod; Cu-doping; HYDROGEN GAS NANOSENSOR; THIN-FILMS; ZINC-OXIDE; GREEN LUMINESCENCE; METHANOL SYNTHESIS; SENSING PROPERTIES; ROOM-TEMPERATURE; COPPER; SENSITIVITY; FABRICATION; Engineering, Electrical & Electronic; Instruments & Instrumentation
Detection of chemicals and biological species is an important issue to human health and safety. In this paper, we report the hydrothermal synthesis at 95 degrees C of Cu-doped ZnO low-dimensional rods for room-temperature (RT) sensing applications and enhanced sensor performances. X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, Raman and photoluminescence are used to characterize the material properties. To demonstrate the suitability of the Cu-doped ZnO rods for gas sensor applications and for comparison with pure ZnO, we fabricated a double rod device using Focused Ion Beam. The responses of pure-ZnO and Cu-doped ZnO rods studied in exactly the same condition are reported. We found that Cu-ZnO sensors have enhanced RT sensitivity, faster response time, and good selectivity. Miniaturized Cu-ZnO rod-based sensors can serve as a good candidate for effective H-2 detectors with low power consumption. (C) 2012 Elsevier B.V. All rights reserved.
Sensors and Actuators a-Physical
"Synthesis and characterization of Cu-doped ZnO one-dimensional structures for miniaturized sensor applications with faster response" (2013). Faculty Bibliography 2010s. 3813.