Nano Archive

Properties of size-tuned PbS nanocrystals stabilized in a polymer template

Babu, K. Suresh and Vijayan, C. and Haridoss, Prathap (2007) Properties of size-tuned PbS nanocrystals stabilized in a polymer template. Materials Research Bulletin, 42 (6). pp. 996-1003. ISSN 0025-5408

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Abstract

Nanoclusters of PbS embedded in polymer matrices have recently been shown to have interesting optical properties with the capability of tuning the effective band gap over a wide spectral range. The results of a systematic investigation of the preparation and characterization of size-tuned PbS nanocrystals stabilized in the polymer nanotemplate of Nafion and their size-dependent physical properties are presented in this paper. These nanocrystals exhibit large characteristic blueshift in optical absorption from the bulk absorption onset value of 3020 nm. XRD and HRTEM measurements indicate the presence of PbS nanocrystals in the size range of 2-6 nm, in the regime of strong quantum confinement. Thermal and electrical properties of the polymer are found to be influenced to a great extent by the embedded PbS nanocrystals. (C) 2006 Elsevier Ltd. All rights reserved.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:7094
Deposited By:JNCASR
Deposited On:02 Sep 2009 10:27
Last Modified:02 Sep 2009 10:27

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