Please use this identifier to cite or link to this item:
http://localhost:8080/xmlui/handle/123456789/1694
Title: | Facile bioanchoring strategy for the preparation of hierarchical multiple structured ZnO crystals and its application as a photoanode in dye sensitized solar cells |
Authors: | Ramakrishnan, R Aravind, A Sudha, J D Manoj Raama Varma Kiran Mohan |
Keywords: | ZnO crystals Dye sensitized solar cells Bioanchored sol−gel Calcination |
Issue Date: | 2014 |
Publisher: | American Chemical Society |
Citation: | Journal of Physical Chemistry C 118(34):19529-19539;28 Aug 2014 |
Abstract: | This paper demonstrates a facile bioanchoring strategy for controlling the crystal growth process of ZnO crystals during calcination to form hierarchical multiple structures. Crystalline phase and morphology of ZnO was investigated using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and atomic force microscopy. Results revealed the evolution of ZnO nanocrystallites from nanosize to hierarchical self-assembly of polydispersed microstructures of bars/ sheets/spheres/hollow spheres in wurzite hexagonal phase. ZnO exhibited photoluminescence attributed to the presence of various defects which was further supported by Raman spectroscopy and energy-dispersive X-ray spectroscopy. On the basis of the various experimental results, a plausible growth mechanism for the formation of multiple structures of ZnO crystals is proposed. Further demonstrated is the application of the polydispersed submicrometer sized ZnO crystals as photoanode in dye sensitized solar cells for improving the power conversion efficiency (∼5.3%) through high dye loading and enhanced light absorption edge via inherent light reflection mechanism. |
URI: | http://ir.niist.res.in:8080/jspui/handle/123456789/1694 |
ISSN: | 1932-7447 |
Appears in Collections: | 2014 |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2014-116.pdf Restricted Access | 8.88 MB | Adobe PDF | View/Open Request a copy |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.