Transmittance optimized nb-doped TiO2/Sn-doped In 2O3 multilayered photoelectrodes for dye-sensitized solar cells

Dong Hoe Kim; Sangwook Lee; Jong Hoon Park; Jun Hong Noh; Ik Jae Park; Won Mo Seong; Kug Sun Hong

doi:10.1016/j.solmat.2011.09.011

Transmittance optimized nb-doped TiO₂/Sn-doped In ₂O₃ multilayered photoelectrodes for dye-sensitized solar cells

Dong Hoe Kim, Sangwook Lee, Jong Hoon Park, Jun Hong Noh, Ik Jae Park, Won Mo Seong, Kug Sun Hong

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

38 Citations (Scopus)

Abstract

We adopt a compact TiO₂ (c-TiO₂) layer on Nb-doped TiO₂ (NTO)/Sn-doped indium oxide (ITO) multilayered electrodes, which are transparent conducting oxide (TCO) electrodes, to improve their transmittance for high-efficiency dye-sensitized solar cells (DSSCs). An NTO layer was deposited on ITO by pulsed laser deposition (PLD) and then a c-TiO₂ layer was deposited on the NTO/ITO multilayer by spin-coating a sol. The transmittance spectrum of the c-TiO₂/NTO/ITO multilayered photoelectrodes varied with the thickness of TiO₂. The short circuit current and energy conversion efficiency of the photoelectrodes also varied with the thickness of the c-TiO₂ layer, which is similar behavior to the integrated value of the transmittance in the wavelength range from 500 to 600 nm. Finally, the DSSC employing the 160 nm-thick c-TiO₂ layer exhibited the most improved energy conversion efficiency, compared to the DSSC without the c-TiO₂ layer. Our results demonstrate that the unfavorable optical properties of TCO, e.g. NTO, for DSSCs can be enhanced by the formation of an additional thin layer, e.g. c-TiO₂.

Original language	English
Pages (from-to)	276-280
Number of pages	5
Journal	Solar Energy Materials and Solar Cells
Volume	96
Issue number	1
DOIs	https://doi.org/10.1016/j.solmat.2011.09.011
Publication status	Published - 2012 Jan
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by the World Class University (WCU) program through the Korea Science and Engineering Foundation funded by the ministry of Education, Science and technology (R31-2008-000–10075-0). And characterization of the crystal structure was supported by Research Institute of Advanced Materials (RIAM).

Keywords

Compact TiO layer
Dye-sensitized solar cells (DSSCs)
Optical modulation
Transparent conducting oxides (TCO)

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.solmat.2011.09.011

Cite this

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title = "Transmittance optimized nb-doped TiO2/Sn-doped In 2O3 multilayered photoelectrodes for dye-sensitized solar cells",

abstract = "We adopt a compact TiO2 (c-TiO2) layer on Nb-doped TiO2 (NTO)/Sn-doped indium oxide (ITO) multilayered electrodes, which are transparent conducting oxide (TCO) electrodes, to improve their transmittance for high-efficiency dye-sensitized solar cells (DSSCs). An NTO layer was deposited on ITO by pulsed laser deposition (PLD) and then a c-TiO2 layer was deposited on the NTO/ITO multilayer by spin-coating a sol. The transmittance spectrum of the c-TiO2/NTO/ITO multilayered photoelectrodes varied with the thickness of TiO2. The short circuit current and energy conversion efficiency of the photoelectrodes also varied with the thickness of the c-TiO2 layer, which is similar behavior to the integrated value of the transmittance in the wavelength range from 500 to 600 nm. Finally, the DSSC employing the 160 nm-thick c-TiO2 layer exhibited the most improved energy conversion efficiency, compared to the DSSC without the c-TiO2 layer. Our results demonstrate that the unfavorable optical properties of TCO, e.g. NTO, for DSSCs can be enhanced by the formation of an additional thin layer, e.g. c-TiO2.",

keywords = "Compact TiO layer, Dye-sensitized solar cells (DSSCs), Optical modulation, Transparent conducting oxides (TCO)",

author = "Kim, {Dong Hoe} and Sangwook Lee and Park, {Jong Hoon} and Noh, {Jun Hong} and Park, {Ik Jae} and Seong, {Won Mo} and Hong, {Kug Sun}",

note = "Funding Information: This work was supported by the World Class University (WCU) program through the Korea Science and Engineering Foundation funded by the ministry of Education, Science and technology (R31-2008-000–10075-0). And characterization of the crystal structure was supported by Research Institute of Advanced Materials (RIAM). ",

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AU - Kim, Dong Hoe

AU - Lee, Sangwook

AU - Park, Jong Hoon

AU - Noh, Jun Hong

AU - Park, Ik Jae

AU - Seong, Won Mo

AU - Hong, Kug Sun

N1 - Funding Information: This work was supported by the World Class University (WCU) program through the Korea Science and Engineering Foundation funded by the ministry of Education, Science and technology (R31-2008-000–10075-0). And characterization of the crystal structure was supported by Research Institute of Advanced Materials (RIAM).

PY - 2012/1

Y1 - 2012/1

N2 - We adopt a compact TiO2 (c-TiO2) layer on Nb-doped TiO2 (NTO)/Sn-doped indium oxide (ITO) multilayered electrodes, which are transparent conducting oxide (TCO) electrodes, to improve their transmittance for high-efficiency dye-sensitized solar cells (DSSCs). An NTO layer was deposited on ITO by pulsed laser deposition (PLD) and then a c-TiO2 layer was deposited on the NTO/ITO multilayer by spin-coating a sol. The transmittance spectrum of the c-TiO2/NTO/ITO multilayered photoelectrodes varied with the thickness of TiO2. The short circuit current and energy conversion efficiency of the photoelectrodes also varied with the thickness of the c-TiO2 layer, which is similar behavior to the integrated value of the transmittance in the wavelength range from 500 to 600 nm. Finally, the DSSC employing the 160 nm-thick c-TiO2 layer exhibited the most improved energy conversion efficiency, compared to the DSSC without the c-TiO2 layer. Our results demonstrate that the unfavorable optical properties of TCO, e.g. NTO, for DSSCs can be enhanced by the formation of an additional thin layer, e.g. c-TiO2.

AB - We adopt a compact TiO2 (c-TiO2) layer on Nb-doped TiO2 (NTO)/Sn-doped indium oxide (ITO) multilayered electrodes, which are transparent conducting oxide (TCO) electrodes, to improve their transmittance for high-efficiency dye-sensitized solar cells (DSSCs). An NTO layer was deposited on ITO by pulsed laser deposition (PLD) and then a c-TiO2 layer was deposited on the NTO/ITO multilayer by spin-coating a sol. The transmittance spectrum of the c-TiO2/NTO/ITO multilayered photoelectrodes varied with the thickness of TiO2. The short circuit current and energy conversion efficiency of the photoelectrodes also varied with the thickness of the c-TiO2 layer, which is similar behavior to the integrated value of the transmittance in the wavelength range from 500 to 600 nm. Finally, the DSSC employing the 160 nm-thick c-TiO2 layer exhibited the most improved energy conversion efficiency, compared to the DSSC without the c-TiO2 layer. Our results demonstrate that the unfavorable optical properties of TCO, e.g. NTO, for DSSCs can be enhanced by the formation of an additional thin layer, e.g. c-TiO2.

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