Enhancement of Photocurrent and Photovoltage of Dye-Sensitized Solar Cells with TiO2 Film Deposited on Indium Zinc Oxide Substrate

Jong Gul Doh; Jin Sup Hong; R. Vittal; Man Gu Kang; Nam Gyu Park; Kang Jin Kim

doi:10.1021/cm030542q

Enhancement of Photocurrent and Photovoltage of Dye-Sensitized Solar Cells with TiO₂ Film Deposited on Indium Zinc Oxide Substrate

Jong Gul Doh, Jin Sup Hong, R. Vittal, Man Gu Kang, Nam Gyu Park, Kang Jin Kim

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

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Abstract

The effects of using indium zinc oxide (IZO) as a conducting substrate in dye-sensitized TiO₂ solar cells (DSC) on their photocurrent-voltage characteristics are studied. We have found that both short-circuit photocurrent (J_sc) and open-circuit voltage (V_oc) of IZO-based cells are substantially improved by about 40% and 10%, respectively, when compared with those of cells based on fluoride-doped tin oxide (FTO). The J_sc increase is correlated to the improved contact between IZO and TiO₂ and enriched conduction band electrons in the TiO₂-on-IZO electrode, due to the blocking of surface states by the evaporated metallic components of the substrate. The combined effects of the negative shift of flat band potential and the reduction in recombination explain the V_oc increase. Our experimental finding suggests that IZO-coated substrate makes more efficient DSC than a FTO-coated one.

Original language	English
Pages (from-to)	493-497
Number of pages	5
Journal	Chemistry of Materials
Volume	16
Issue number	3
DOIs	https://doi.org/10.1021/cm030542q
State	Published - 10 Feb 2004
Externally published	Yes

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title = "Enhancement of Photocurrent and Photovoltage of Dye-Sensitized Solar Cells with TiO2 Film Deposited on Indium Zinc Oxide Substrate",

abstract = "The effects of using indium zinc oxide (IZO) as a conducting substrate in dye-sensitized TiO2 solar cells (DSC) on their photocurrent-voltage characteristics are studied. We have found that both short-circuit photocurrent (Jsc) and open-circuit voltage (Voc) of IZO-based cells are substantially improved by about 40\% and 10\%, respectively, when compared with those of cells based on fluoride-doped tin oxide (FTO). The Jsc increase is correlated to the improved contact between IZO and TiO2 and enriched conduction band electrons in the TiO2-on-IZO electrode, due to the blocking of surface states by the evaporated metallic components of the substrate. The combined effects of the negative shift of flat band potential and the reduction in recombination explain the Voc increase. Our experimental finding suggests that IZO-coated substrate makes more efficient DSC than a FTO-coated one.",

author = "Doh, \{Jong Gul\} and Hong, \{Jin Sup\} and R. Vittal and Kang, \{Man Gu\} and Park, \{Nam Gyu\} and Kim, \{Kang Jin\}",

year = "2004",

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doi = "10.1021/cm030542q",

language = "English",

volume = "16",

pages = "493--497",

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T1 - Enhancement of Photocurrent and Photovoltage of Dye-Sensitized Solar Cells with TiO2 Film Deposited on Indium Zinc Oxide Substrate

AU - Doh, Jong Gul

AU - Hong, Jin Sup

AU - Vittal, R.

AU - Kang, Man Gu

AU - Park, Nam Gyu

AU - Kim, Kang Jin

PY - 2004/2/10

Y1 - 2004/2/10

N2 - The effects of using indium zinc oxide (IZO) as a conducting substrate in dye-sensitized TiO2 solar cells (DSC) on their photocurrent-voltage characteristics are studied. We have found that both short-circuit photocurrent (Jsc) and open-circuit voltage (Voc) of IZO-based cells are substantially improved by about 40% and 10%, respectively, when compared with those of cells based on fluoride-doped tin oxide (FTO). The Jsc increase is correlated to the improved contact between IZO and TiO2 and enriched conduction band electrons in the TiO2-on-IZO electrode, due to the blocking of surface states by the evaporated metallic components of the substrate. The combined effects of the negative shift of flat band potential and the reduction in recombination explain the Voc increase. Our experimental finding suggests that IZO-coated substrate makes more efficient DSC than a FTO-coated one.

AB - The effects of using indium zinc oxide (IZO) as a conducting substrate in dye-sensitized TiO2 solar cells (DSC) on their photocurrent-voltage characteristics are studied. We have found that both short-circuit photocurrent (Jsc) and open-circuit voltage (Voc) of IZO-based cells are substantially improved by about 40% and 10%, respectively, when compared with those of cells based on fluoride-doped tin oxide (FTO). The Jsc increase is correlated to the improved contact between IZO and TiO2 and enriched conduction band electrons in the TiO2-on-IZO electrode, due to the blocking of surface states by the evaporated metallic components of the substrate. The combined effects of the negative shift of flat band potential and the reduction in recombination explain the Voc increase. Our experimental finding suggests that IZO-coated substrate makes more efficient DSC than a FTO-coated one.

UR - https://www.scopus.com/pages/publications/1942470631

U2 - 10.1021/cm030542q

DO - 10.1021/cm030542q

M3 - Article

AN - SCOPUS:1942470631

SN - 0897-4756

VL - 16

SP - 493

EP - 497

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 3

ER -

Enhancement of Photocurrent and Photovoltage of Dye-Sensitized Solar Cells with TiO₂ Film Deposited on Indium Zinc Oxide Substrate

Abstract

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