Improved performance of dye-sensitized solar cells with surface-treated TiO 2 as a photoelectrode

Su Kyung Park; Chinkap Chung; Dae Hwan Kim; Cham Kim; Sang Ju Lee; Yoon Soo Han

doi:10.1016/j.materresbull.2012.04.049

Improved performance of dye-sensitized solar cells with surface-treated TiO ₂ as a photoelectrode

Su Kyung Park, Chinkap Chung, Dae Hwan Kim, Cham Kim, Sang Ju Lee, Yoon Soo Han

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We report on the effects of surface-modified TiO ₂ on the performance of dye-sensitized solar cells (DSSCs). TiO ₂ surface was modified with Na ₂CO ₃ via a simple dip coating process and the modified TiO ₂ was applied to photoelectrodes of DSSCs. By dipping of TiO ₂ layer into aqueous Na ₂CO ₃ solution, the DSSC showed a power conversion efficiency of 9.98%, compared to that (7.75%) of the reference device without surface treatment. The UV-vis absorption spectra, the impedance spectra and the dark current studies revealed that the increase of all parameters was attributed to the enhanced dye adsorption, the prolonged electron lifetime and the reduced interfacial resistance.

Original language	English
Pages (from-to)	2722-2725
Number of pages	4
Journal	Materials Research Bulletin
Volume	47
Issue number	10
DOIs	https://doi.org/10.1016/j.materresbull.2012.04.049
State	Published - Oct 2012

Bibliographical note

Funding Information:
This work was supported by the DGIST R&D Program of the Ministry of Education, Science and Technology of Korea ( 12-BD-03 ).

Keywords

A. Semiconductors
A. Surfaces
C. Impedance spectroscopy
D. Surface properties

Access to Document

10.1016/j.materresbull.2012.04.049

Cite this

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title = "Improved performance of dye-sensitized solar cells with surface-treated TiO 2 as a photoelectrode",

abstract = "We report on the effects of surface-modified TiO 2 on the performance of dye-sensitized solar cells (DSSCs). TiO 2 surface was modified with Na 2CO 3 via a simple dip coating process and the modified TiO 2 was applied to photoelectrodes of DSSCs. By dipping of TiO 2 layer into aqueous Na 2CO 3 solution, the DSSC showed a power conversion efficiency of 9.98%, compared to that (7.75%) of the reference device without surface treatment. The UV-vis absorption spectra, the impedance spectra and the dark current studies revealed that the increase of all parameters was attributed to the enhanced dye adsorption, the prolonged electron lifetime and the reduced interfacial resistance.",

keywords = "A. Semiconductors, A. Surfaces, C. Impedance spectroscopy, D. Surface properties",

author = "Park, {Su Kyung} and Chinkap Chung and Kim, {Dae Hwan} and Cham Kim and Lee, {Sang Ju} and Han, {Yoon Soo}",

note = "Funding Information: This work was supported by the DGIST R&D Program of the Ministry of Education, Science and Technology of Korea ( 12-BD-03 ).",

year = "2012",

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T1 - Improved performance of dye-sensitized solar cells with surface-treated TiO 2 as a photoelectrode

AU - Park, Su Kyung

AU - Chung, Chinkap

AU - Kim, Dae Hwan

AU - Kim, Cham

AU - Lee, Sang Ju

AU - Han, Yoon Soo

N1 - Funding Information: This work was supported by the DGIST R&D Program of the Ministry of Education, Science and Technology of Korea ( 12-BD-03 ).

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AB - We report on the effects of surface-modified TiO 2 on the performance of dye-sensitized solar cells (DSSCs). TiO 2 surface was modified with Na 2CO 3 via a simple dip coating process and the modified TiO 2 was applied to photoelectrodes of DSSCs. By dipping of TiO 2 layer into aqueous Na 2CO 3 solution, the DSSC showed a power conversion efficiency of 9.98%, compared to that (7.75%) of the reference device without surface treatment. The UV-vis absorption spectra, the impedance spectra and the dark current studies revealed that the increase of all parameters was attributed to the enhanced dye adsorption, the prolonged electron lifetime and the reduced interfacial resistance.

KW - A. Semiconductors

KW - A. Surfaces

KW - C. Impedance spectroscopy

KW - D. Surface properties

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