Tailoring of electron diffusion through TiO2 nanowires

Charge transport through a random network of onedimensional TiO2 nanostructures such as nanorods, nanowires, and nanofibers developed by electrospinning technique has been studied in the presence of an electrolyte by electrochemical impedance spectroscopy and transient photocurrent measurements. The...

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Main Authors:	Rajan, Jose, M. M., Yusoff
Format:	Conference or Workshop Item
Language:	English
Published:	AIP Publishing LLC. 2012
Subjects:	Q Science (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/26736/ http://umpir.ump.edu.my/id/eprint/26736/ http://umpir.ump.edu.my/id/eprint/26736/1/Tailoring%20of%20electron%20diffusion%20through%20TiO2%20nanowires.pdf

id	ump-26736
recordtype	eprints
spelling	ump-267362020-02-13T07:05:08Z http://umpir.ump.edu.my/id/eprint/26736/ Tailoring of electron diffusion through TiO2 nanowires Rajan, Jose M. M., Yusoff Q Science (General) Charge transport through a random network of onedimensional TiO2 nanostructures such as nanorods, nanowires, and nanofibers developed by electrospinning technique has been studied in the presence of an electrolyte by electrochemical impedance spectroscopy and transient photocurrent measurements. The results have been compared with the charge transport parameters of random TiO2 nanoparticle (25 nm) network. The charge transport was discussed under the framework of hopping transport. Continuous nanofibers had longer charge collecting times and short nanorods have enhanced scattering losses. The TiO2 films containing random network of nanowires of aspect ratio 10:1 can have an order of magnitude higher diffusion coefficient than other morphologies. Furthermore, charge transport through Nb-doped anatase TiO2 nanofibers was studied. It was observed that the Fermi level of TiO2 rise close to its conduction band and result in a band-edge type diffusion mechanism even at low bias voltages when 2 wt% Nb atoms replaces the Ti atoms in the anatase lattice. The Nb-doped anatase electrospun nanofibers showed high chemical capacitance, high effective diffusion coefficient, and lower transport resistance compared to the undoped samples and conventional nanoparticles. AIP Publishing LLC. 2012 Conference or Workshop Item PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/26736/1/Tailoring%20of%20electron%20diffusion%20through%20TiO2%20nanowires.pdf Rajan, Jose and M. M., Yusoff (2012) Tailoring of electron diffusion through TiO2 nanowires. In: International Conference on Nanotechnology - Research and Commercialization (ICONT 2011), 6-9 June 2011 , Sabah. pp. 5-25., 1502 (1). ISSN 0094243X ISBN 978-073541119-7 https://doi.org/10.1063/1.4769130
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	Q Science (General)
spellingShingle	Q Science (General) Rajan, Jose M. M., Yusoff Tailoring of electron diffusion through TiO2 nanowires
description	Charge transport through a random network of onedimensional TiO2 nanostructures such as nanorods, nanowires, and nanofibers developed by electrospinning technique has been studied in the presence of an electrolyte by electrochemical impedance spectroscopy and transient photocurrent measurements. The results have been compared with the charge transport parameters of random TiO2 nanoparticle (25 nm) network. The charge transport was discussed under the framework of hopping transport. Continuous nanofibers had longer charge collecting times and short nanorods have enhanced scattering losses. The TiO2 films containing random network of nanowires of aspect ratio 10:1 can have an order of magnitude higher diffusion coefficient than other morphologies. Furthermore, charge transport through Nb-doped anatase TiO2 nanofibers was studied. It was observed that the Fermi level of TiO2 rise close to its conduction band and result in a band-edge type diffusion mechanism even at low bias voltages when 2 wt% Nb atoms replaces the Ti atoms in the anatase lattice. The Nb-doped anatase electrospun nanofibers showed high chemical capacitance, high effective diffusion coefficient, and lower transport resistance compared to the undoped samples and conventional nanoparticles.
format	Conference or Workshop Item
author	Rajan, Jose M. M., Yusoff
author_facet	Rajan, Jose M. M., Yusoff
author_sort	Rajan, Jose
title	Tailoring of electron diffusion through TiO2 nanowires
title_short	Tailoring of electron diffusion through TiO2 nanowires
title_full	Tailoring of electron diffusion through TiO2 nanowires
title_fullStr	Tailoring of electron diffusion through TiO2 nanowires
title_full_unstemmed	Tailoring of electron diffusion through TiO2 nanowires
title_sort	tailoring of electron diffusion through tio2 nanowires
publisher	AIP Publishing LLC.
publishDate	2012
url	http://umpir.ump.edu.my/id/eprint/26736/ http://umpir.ump.edu.my/id/eprint/26736/ http://umpir.ump.edu.my/id/eprint/26736/1/Tailoring%20of%20electron%20diffusion%20through%20TiO2%20nanowires.pdf
first_indexed	2023-09-18T22:41:48Z
last_indexed	2023-09-18T22:41:48Z
_version_	1777416964914806784

Tailoring of electron diffusion through TiO2 nanowires

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