Title: Rapid generation of hierarchical nanoarchitectures of CdS via facile microwave assisted hydrothermal/semi-solvothermal route

Authors: Manish D. Shinde, Amol U. Pawar, V. Sreeja, Sunit Rane, Hari S. Potdar, Dinesh P. Amalnerkar

Addresses: Centre for Materials for Electronics Technology (C-MET), Plasma and Nanomaterials Laboratory, Panchwati, Pashan Road, Pune 411 008, India. ' Centre for Materials for Electronics Technology (C-MET), Plasma and Nanomaterials Laboratory, Panchwati, Pashan Road, Pune 411 008, India. ' Physical Chemistry Division, National Chemical Laboratory (NCL), Pashan Road, Pune 411 008, India. ' Centre for Materials for Electronics Technology (C-MET), Plasma and Nanomaterials Laboratory, Panchwati, Pashan Road, Pune 411 008, India. ' Physical Chemistry Division, National Chemical Laboratory (NCL), Pashan Road, Pune 411 008, India. ' Centre for Materials for Electronics Technology (C-MET), Plasma and Nanomaterials Laboratory, Panchwati, Pashan Road, Pune 411 008, India

Abstract: 1-D nanorod bundles as well as sea urchin and starfish like hierarchical morphological nanoarchitectures of CdS have been synthesised using a facile microwave assisted hydrothermal/semi-solvothermal technique. Observation of interesting regular/irregular pine-tree like secondary growth over these hierarchical nanoarchitectures is an important aspect of this work. Cadmium acetate and thiourea were used as precursor materials and were dissolved in solution containing mixture of diethylene triamine (DETA) and deionised water (DIW) in different volume ratios prior to subjecting the resultant solution to microwave radiation of 300 W at a reaction time of 10 min and temperature of 140°C. XRD revealed formation of hexagonal CdS with strong (002) preferred orientation (c-axis orientation). Morphology dependent optical properties are studied using room temperature photoluminescence spectroscopy. We feel such secondary growth will be highly favourable in determining the non-linear properties of optoelectronic devices fabricated using such novel hierarchical nanoarchitectures.

Keywords: microwave; solvothermal synthesis; nanorods; hierarchical nanoarchitectures; CdS; secondary growth; cadmium sulphide; nanotechnology; hydrothermal synthesis; cadmium acetate; thiourea; optical properties; optoelectronic devices.

DOI: 10.1504/IJNT.2010.034716

International Journal of Nanotechnology, 2010 Vol.7 No.9/10/11/12, pp.1120 - 1130

Published online: 17 Aug 2010 *

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