Jana, Sunirmal and Vuk, Angela Surca and Mallick, Aparajita and Orel, Boris and Biswas, Prasanta Kumar (2011) Effect of boron doping on optical properties of sol-gel based nanostructured zinc oxide films on glass. Materials Research Bulletin, 46 (12). pp. 2392-2397. ISSN 0025-5408

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Boron doped zinc oxide thin films (similar to 80 nm) were deposited onto pure silica glass by sol-gel dip coating technique from the precursor sol/solution of 4.0 wt.% equivalent oxide content. The boron concentration was varied from 0 to 2 at.% w.r.t. Zn using crystalline boric acid. The nanostructured feature of the films was visualized by FESEM images and the largest cluster size of ZnO was found in 1 at.% boron doped film (B1ZO). The presence of mixed crystal phases with hexagonal as major phase was identified from XRD reflections of the films. Particle size, optical band gap, visible specular reflection, room temperature photoluminescence (PL) emissions (3.24-2.28 eV), infra-red (IR) and Raman active longitudinal optical (LO) phonon vibration were found to be dependent on dopant concentration. For the first time, we report the room temperature fine structured PL emissions as phonon replicas originated from the LO phonon (both IR and Raman active) in 1 at.% boron doped zinc oxide film. (C) 2011 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Thin films; Nanostructures; Semiconductors; Optical properties; Luminescence
Subjects: Glass
Divisions: Sol Gel
Depositing User: Bidhan Chaudhuri
Date Deposited: 02 Feb 2012 12:05
Last Modified: 25 Feb 2013 08:07
URI: http://cgcri.csircentral.net/id/eprint/641

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