Please use this identifier to cite or link to this item:
|Title:||Rice grain-shaped TiO 2-CNT composite - A functional material with a novel morphology for dye-sensitized solar cells||Authors:||Peining, Z.
|Issue Date:||1-Mar-2012||Citation:||Peining, Z., Nair, A.S., Shengyuan, Y., Shengjie, P., Elumalai, N.K., Ramakrishna, S. (2012-03-01). Rice grain-shaped TiO 2-CNT composite - A functional material with a novel morphology for dye-sensitized solar cells. Journal of Photochemistry and Photobiology A: Chemistry 231 (1) : 9-18. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jphotochem.2012.01.002||Abstract:||Titanium dioxide-multiwalled carbon nanotube (denoted as TiO 2-CNT) nanocomposites with a novel rice-grains nanostructure are synthesized by electrospinning and subsequent high temperature sintering. The rice grain-shaped TiO 2 is single crystalline with a large surface area and the single crystallinity is retained in the TiO 2-CNT composite as well. At very low CNT loadings (0.1-0.3 wt% of TiO 2), the rice grain shape remains unchanged while at high CNT concentrations (8 wt%), the morphology distorts with CNTs sticking out of the rice-grain shape. The optimum concentration of CNTs in the TiO 2 matrix for best performance in dye-sensitized solar cells (DSCs) is found to be 0.2 wt%, which shows a 32% enhancement in the energy conversion efficiency. The electrochemical impedance spectroscopy (EIS) and the incident photon-to-electron conversion efficiency (IPCE) measurements show that the charge transfer and collection are improved by the incorporation of CNTs into the rice grain-shaped TiO 2 network. We believe that this facile one-pot method for the synthesis of the rice-grain shaped TiO 2-CNT composites with high surface area and single crystallinity offers an attractive means for the mass-scale fabrication of the nanostructures for DSCs since electrospinning is a simple, cost-effective and scalable means for the commercial scale fabrication of one-dimensional nanostructures. © 2012 Elsevier B.V.||Source Title:||Journal of Photochemistry and Photobiology A: Chemistry||URI:||http://scholarbank.nus.edu.sg/handle/10635/85607||ISSN:||10106030||DOI:||10.1016/j.jphotochem.2012.01.002|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Dec 1, 2020
WEB OF SCIENCETM
checked on Dec 1, 2020
checked on Nov 29, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.