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Improved electron transfer of TiO2 based dye sensitized solar cells using Ge as sintering aid

Low electron mobility of TiO2 semi-conductor and inferior inter-particle contact facilitate recombination reactions that leads to low performance of dye sensitized solar cells (DSSCs). To improve electron mobility at relatively low sintering temperatures, doping of germanium (Ge) nanoparticles with...

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Main Authors: Ahmad, Muhammad Shakeel, Rahim, Nasrudin Abd, Pandey, Adarsh Kumar
Format: Article
Published: Elsevier 2018
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.um.edu.my/22642/
https://doi.org/10.1016/j.ijleo.2017.11.073
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spelling my.um.eprints.226422019-10-04T07:06:50Z http://eprints.um.edu.my/22642/ Improved electron transfer of TiO2 based dye sensitized solar cells using Ge as sintering aid Ahmad, Muhammad Shakeel Rahim, Nasrudin Abd Pandey, Adarsh Kumar TK Electrical engineering. Electronics Nuclear engineering Low electron mobility of TiO2 semi-conductor and inferior inter-particle contact facilitate recombination reactions that leads to low performance of dye sensitized solar cells (DSSCs). To improve electron mobility at relatively low sintering temperatures, doping of germanium (Ge) nanoparticles with TiO2 have been trailed due to its excellent optoelectronic and low temperature sintering properties. Anatase TiO2-Ge nanocomposites have been prepared by using colloidal suspension process and deposited on conducting glass using doctor blade technique. Four types of nanocomposites i.e. (1) TiO2–0.5 wt%Ge, (2) TiO2–2 wt%Ge, (3) TiO2–5 wt%Ge and (4) TiO2–10 wt%Ge have been prepared and sintered at 400 °C with a control specimen fabricated using pure TiO2 nanoparticles (sintered at 450 °C) for comparison purpose. To investigate the morphological and structural characteristics, SEM and XRD have been employed. The UV-vis and impedance spectroscopy have been performed to observe light absorption and electron transfer characteristics respectively. Finally, specimens were tested for their photo conversion efficiency. An increase in electron transfer ability and conversion efficiency have been recorded with increase in Ge nanoparticles even at 400 °C sinter temperature compared to reference TiO2 photoanodessintered at 450 °C. Elsevier 2018 Article PeerReviewed Ahmad, Muhammad Shakeel and Rahim, Nasrudin Abd and Pandey, Adarsh Kumar (2018) Improved electron transfer of TiO2 based dye sensitized solar cells using Ge as sintering aid. Optik, 157. pp. 134-140. ISSN 0030-4026 https://doi.org/10.1016/j.ijleo.2017.11.073 doi:10.1016/j.ijleo.2017.11.073
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Ahmad, Muhammad Shakeel
Rahim, Nasrudin Abd
Pandey, Adarsh Kumar
Improved electron transfer of TiO2 based dye sensitized solar cells using Ge as sintering aid
description Low electron mobility of TiO2 semi-conductor and inferior inter-particle contact facilitate recombination reactions that leads to low performance of dye sensitized solar cells (DSSCs). To improve electron mobility at relatively low sintering temperatures, doping of germanium (Ge) nanoparticles with TiO2 have been trailed due to its excellent optoelectronic and low temperature sintering properties. Anatase TiO2-Ge nanocomposites have been prepared by using colloidal suspension process and deposited on conducting glass using doctor blade technique. Four types of nanocomposites i.e. (1) TiO2–0.5 wt%Ge, (2) TiO2–2 wt%Ge, (3) TiO2–5 wt%Ge and (4) TiO2–10 wt%Ge have been prepared and sintered at 400 °C with a control specimen fabricated using pure TiO2 nanoparticles (sintered at 450 °C) for comparison purpose. To investigate the morphological and structural characteristics, SEM and XRD have been employed. The UV-vis and impedance spectroscopy have been performed to observe light absorption and electron transfer characteristics respectively. Finally, specimens were tested for their photo conversion efficiency. An increase in electron transfer ability and conversion efficiency have been recorded with increase in Ge nanoparticles even at 400 °C sinter temperature compared to reference TiO2 photoanodessintered at 450 °C.
format Article
author Ahmad, Muhammad Shakeel
Rahim, Nasrudin Abd
Pandey, Adarsh Kumar
author_facet Ahmad, Muhammad Shakeel
Rahim, Nasrudin Abd
Pandey, Adarsh Kumar
author_sort Ahmad, Muhammad Shakeel
title Improved electron transfer of TiO2 based dye sensitized solar cells using Ge as sintering aid
title_short Improved electron transfer of TiO2 based dye sensitized solar cells using Ge as sintering aid
title_full Improved electron transfer of TiO2 based dye sensitized solar cells using Ge as sintering aid
title_fullStr Improved electron transfer of TiO2 based dye sensitized solar cells using Ge as sintering aid
title_full_unstemmed Improved electron transfer of TiO2 based dye sensitized solar cells using Ge as sintering aid
title_sort improved electron transfer of tio2 based dye sensitized solar cells using ge as sintering aid
publisher Elsevier
publishDate 2018
url http://eprints.um.edu.my/22642/
https://doi.org/10.1016/j.ijleo.2017.11.073
_version_ 1648736168201682944
score 13.211869

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