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Preparation of a nanoporous CaCO <inf>3</inf>-coated TiO <inf>2</inf> electrode and its application to a dye-sensitized solar cell

Lee, S and Kim, JY and Youn, SH and Park, M and Hong, KS and Jung, HS and Lee, JK and Shin, H (2007) Preparation of a nanoporous CaCO <inf>3</inf>-coated TiO <inf>2</inf> electrode and its application to a dye-sensitized solar cell. Langmuir, 23 (23). 11907 - 11910. ISSN 0743-7463

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A nanoporous CaCO 3 overlayer-coated TiO 2 thick film was prepared by the topotactic thermal decomposition of Ca(OH) 2, and its performance as an electrode of a dye-sensitized solar cell was investigated. As compared to bare TiO 2, nanoporous CaCO 3-coated TiO 2 provided higher specific surface area and, subsequently, a larger amount of dye adsorption; this in turn increased short-circuit current (J sc). Furthermore, the CaCO 3 coating demonstrated increased impedance at the TiO 2/dye/electrolyte interface and increased the lifetime of the photoelectrons, indicating the improved retardation of the back electron transfer, which increases J sc, open-circuit voltage (V oc), and fill factor (ff). Thereby, the energy conversion efficiency (η) of the solar cell improved from 7.8 to 9.7% (an improvement of 24.4%) as the nanoporous CaCO 3 layer was coated onto TiO 2 thick films. © 2007 American Chemical Society.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Lee, S
Kim, JY
Youn, SH
Park, M
Hong, KS
Jung, HS
Lee, JKjul37@pitt.eduJUL370000-0002-7778-7679
Shin, H
Centers: Other Centers, Institutes, Offices, or Units > Petersen Institute of NanoScience and Engineering
Date: 6 November 2007
Date Type: Publication
Journal or Publication Title: Langmuir
Volume: 23
Number: 23
Page Range: 11907 - 11910
DOI or Unique Handle: 10.1021/la701826v
Schools and Programs: Swanson School of Engineering > Mechanical Engineering and Materials Science
Refereed: Yes
ISSN: 0743-7463
PubMed ID: 17927224
Date Deposited: 30 Oct 2014 14:31
Last Modified: 22 Jun 2021 20:55


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