Performance enhancement of dye-sensitized solar cell with a TiCl4-treated TiO2 compact layer

Jisuk Park; Myeongkyu Lee

doi:10.1007/s13391-014-4130-6

Performance enhancement of dye-sensitized solar cell with a TiCl₄-treated TiO₂ compact layer

Jisuk Park, Myeongkyu Lee

Department of Materials Science and Engineering

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

26 Citations (Scopus)

Abstract

We here show that an effective blocking layer for dye-sensitized solar cells (DSSCs) can be formed by spin coating a commercial TiO₂ paste onto a conducting glass substrate. The spin-coated TiO₂ layer was made more compact than the main absorption layer by TiCl₄ treatment. DSSCs employing a compact layer exhibited an average current density and an efficiency of 19.09 mA/cm² and 9.10%, respectively, while 16.91 mA/cm² and 8.33% were obtained from unblocked reference cells. The enhanced DSSC performance is attributed to the increased electron lifetime. Intensity-modulated photovoltage spectroscopy and open-circuit voltage decay analysis showed that a TiCl₄-treated compact layer substantially suppresses the charge recombination at the TiO₂/substrate interface, thereby increasing the electron lifetime.

Original language	English
Pages (from-to)	271-275
Number of pages	5
Journal	Electronic Materials Letters
Volume	11
Issue number	2
DOIs	https://doi.org/10.1007/s13391-014-4130-6
Publication status	Published - 2015 Mar 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials

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10.1007/s13391-014-4130-6

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abstract = "We here show that an effective blocking layer for dye-sensitized solar cells (DSSCs) can be formed by spin coating a commercial TiO2 paste onto a conducting glass substrate. The spin-coated TiO2 layer was made more compact than the main absorption layer by TiCl4 treatment. DSSCs employing a compact layer exhibited an average current density and an efficiency of 19.09 mA/cm2 and 9.10%, respectively, while 16.91 mA/cm2 and 8.33% were obtained from unblocked reference cells. The enhanced DSSC performance is attributed to the increased electron lifetime. Intensity-modulated photovoltage spectroscopy and open-circuit voltage decay analysis showed that a TiCl4-treated compact layer substantially suppresses the charge recombination at the TiO2/substrate interface, thereby increasing the electron lifetime.",

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N2 - We here show that an effective blocking layer for dye-sensitized solar cells (DSSCs) can be formed by spin coating a commercial TiO2 paste onto a conducting glass substrate. The spin-coated TiO2 layer was made more compact than the main absorption layer by TiCl4 treatment. DSSCs employing a compact layer exhibited an average current density and an efficiency of 19.09 mA/cm2 and 9.10%, respectively, while 16.91 mA/cm2 and 8.33% were obtained from unblocked reference cells. The enhanced DSSC performance is attributed to the increased electron lifetime. Intensity-modulated photovoltage spectroscopy and open-circuit voltage decay analysis showed that a TiCl4-treated compact layer substantially suppresses the charge recombination at the TiO2/substrate interface, thereby increasing the electron lifetime.

AB - We here show that an effective blocking layer for dye-sensitized solar cells (DSSCs) can be formed by spin coating a commercial TiO2 paste onto a conducting glass substrate. The spin-coated TiO2 layer was made more compact than the main absorption layer by TiCl4 treatment. DSSCs employing a compact layer exhibited an average current density and an efficiency of 19.09 mA/cm2 and 9.10%, respectively, while 16.91 mA/cm2 and 8.33% were obtained from unblocked reference cells. The enhanced DSSC performance is attributed to the increased electron lifetime. Intensity-modulated photovoltage spectroscopy and open-circuit voltage decay analysis showed that a TiCl4-treated compact layer substantially suppresses the charge recombination at the TiO2/substrate interface, thereby increasing the electron lifetime.

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Performance enhancement of dye-sensitized solar cell with a TiCl₄-treated TiO₂ compact layer

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