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Preparation of nanoporous MgO-coated TiO <inf>2</inf> nanoparticles and their application to the electrode of dye-sensitized solar cells

Jung, HS and Lee, JK and Nastasi, M and Lee, SW and Kim, JY and Park, JS and Hong, KS and Shin, H (2005) Preparation of nanoporous MgO-coated TiO <inf>2</inf> nanoparticles and their application to the electrode of dye-sensitized solar cells. Langmuir, 21 (23). 10332 - 10335. ISSN 0743-7463

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Abstract

Sol-gel-derived Mg(OH) 2 gel was coated onto TiO 2 nanoparticles, and the subsequent thermal topotactic decomposition of the gel formed a highly nanoporous MgO crystalline coating. The specific surface area of the electrode that was prepared from the core-shell-structured TiO 2 nanoparticles significantly increased compared with that of the uncoated TiO 2 electrode. The increase in the specific surface area of the MgO-coated TiO 2 electrode was attributed to the highly nanoporous MgO coating layer that resulted from the topotactic reaction. Dye adsorption behavior and solar cell performance were significantly enhanced by employing the MgO-coated TiO 2 electrode. Optimized coating of a MgO layer on TiO 2 nanoparticles enhanced the energy conversion efficiency as much as 45% compared to that of the uncoated TiO 2 electrode. This indicates that controlling the extrinsic parameters such as the specific surface area is very important to improve the energy conversion efficiency of TiO 2-based solar cells. © 2005 American Chemical Society.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Jung, HS
Lee, JKjul37@pitt.eduJUL370000-0002-7778-7679
Nastasi, M
Lee, SW
Kim, JY
Park, JS
Hong, KS
Shin, H
Date: 8 November 2005
Date Type: Publication
Journal or Publication Title: Langmuir
Volume: 21
Number: 23
Page Range: 10332 - 10335
DOI or Unique Handle: 10.1021/la051807d
Schools and Programs: Swanson School of Engineering > Mechanical Engineering and Materials Science
Refereed: Yes
ISSN: 0743-7463
PubMed ID: 16262288
Date Deposited: 14 May 2014 16:07
Last Modified: 05 Feb 2019 19:55
URI: http://d-scholarship.pitt.edu/id/eprint/21549

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