Tailoring the Cu(In, Al)S-2 nanostructures for photonic applications

Murali, Banavoth and Krupanidhi, SB (2013) Tailoring the Cu(In, Al)S-2 nanostructures for photonic applications. In: 39th IEEE Photovoltaic Specialists Conference (PVSC), JUN 16-21, 2013, Tampa, FL, pp. 2017-2022.

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Abstract

Solvent dependent and low temperature based Chalcopyrite CuIn1-xAlxS2 (CIAS) nano structures were synthesized by a simple one-pot solvothermal route. X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-visible spectroscopy and micro-Raman spectroscopy were used to characterize the nanostructures structurally and optically. CIAS hollow spheres were constructed from the nanoplates. Detailed formation mechanism of the hollow spheres was explained. Tentative optical phonon vibrational modes have been discussed. Steady state room temperature IR photodectection have been demonstrated with all the CIAS nanostructures under IR lamp illumination. Photo current was amplified by two orders and one order in case of nano needle like structures and hollow spheres respectively, which was explained based upon the trap assisted space charge. Growth and decay constants lasted for few milli seconds.

Item Type:	Conference Proceedings
Series.:	IEEE Photovoltaic Specialists Conference
Publisher:	IEEE
Additional Information:	Copy right for this article belongs to the IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Keywords:	infrared detectors; inorganic materials nanoparticles; nano photonics; photodetectors
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	25 Sep 2014 06:04
Last Modified:	25 Sep 2014 06:04
URI:	http://eprints.iisc.ac.in/id/eprint/49952

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