Inderscience Publishers

Synthesis and characterisation of CZT nanowire arrays for gamma ray detection

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A single step pulsed potential electrodeposition of cadmium zinc telluride (CZT) nanowires was carried out in propylene carbonate solution at 130°C onto a nanotubular TiO2 template. Various combinations of potential pulses were investigated and the electrochemical parameters were optimised to obtain nanowires with a stoichiometry of Cd0.96Zn0.04Te. The CZT nanowires showed an electrical resistivity of 4.48 × 109 Ω-cm and an electronic band gap of 1.53 eV after annealing at 350°C for 1 h in argon atmosphere. The CZT nanowires grown on semiconductor nanotubular TiO2 templates can be integrated into a detection device for sensing low-medium energy gamma rays.

Keywords: electrodeposition, CZT, cadmium zinc telluride, band gap, resistivity, nanowires, gamma ray detectors, nanosensors, nanotechnology, nanotubes

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