Metal/metal sulfide functionalized single-walled carbon nanotubes: FTO-free counter electrodes for dye sensitized solar cells

Liling Zhang; Hemant Kumar Mulmudi; Sudip Kumar Batabyal; Yeng Ming Lam; Subodh Gautam Mhaisalkar

doi:10.1039/c2cp40900c

Metal/metal sulfide functionalized single-walled carbon nanotubes: FTO-free counter electrodes for dye sensitized solar cells

Liling Zhang, Hemant Kumar Mulmudi, Sudip Kumar Batabyal^*, Yeng Ming Lam, Subodh Gautam Mhaisalkar

^*Corresponding author for this work

Nanyang Technological University

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

27 Citations (Scopus)

Abstract

The use of single-walled carbon nanotubes (CNT) thin films to replace conventional fluorine-doped tin oxide (FTO) and both FTO and platinum (Pt) as the counter electrode in dye sensitized solar cells (DSSC) requires surface modification due to high sheet resistance and charge transfer resistance. In this paper, we report a simple, solution-based method of preparing FTO-free counter electrodes based on metal (Pt) or metal sulfide (Co _8.4S ₈, Ni ₃S ₂) nanoparticles/CNT composite films to improve device performance. Based on electrochemical studies, the relative catalytic activity of the composite films was Pt > Co _8.4S ₈ > Ni ₃S ₂. We achieved a maximum efficiency of 3.76% for the device with an FTO-free counter electrode (Pt/CNT). The device with an FTO- and Pt-free (CoS/CNT) counter electrode gives 3.13% efficiency.

Original language	English
Pages (from-to)	9906-9911
Number of pages	6
Journal	Physical Chemistry Chemical Physics
Volume	14
Issue number	28
DOIs	https://doi.org/10.1039/c2cp40900c
Publication status	Published - Jul 28 2012
Externally published	Yes

ASJC Scopus Subject Areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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title = "Metal/metal sulfide functionalized single-walled carbon nanotubes: FTO-free counter electrodes for dye sensitized solar cells",

abstract = "The use of single-walled carbon nanotubes (CNT) thin films to replace conventional fluorine-doped tin oxide (FTO) and both FTO and platinum (Pt) as the counter electrode in dye sensitized solar cells (DSSC) requires surface modification due to high sheet resistance and charge transfer resistance. In this paper, we report a simple, solution-based method of preparing FTO-free counter electrodes based on metal (Pt) or metal sulfide (Co 8.4S 8, Ni 3S 2) nanoparticles/CNT composite films to improve device performance. Based on electrochemical studies, the relative catalytic activity of the composite films was Pt > Co 8.4S 8 > Ni 3S 2. We achieved a maximum efficiency of 3.76% for the device with an FTO-free counter electrode (Pt/CNT). The device with an FTO- and Pt-free (CoS/CNT) counter electrode gives 3.13% efficiency.",

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AU - Zhang, Liling

AU - Mulmudi, Hemant Kumar

AU - Batabyal, Sudip Kumar

AU - Lam, Yeng Ming

AU - Mhaisalkar, Subodh Gautam

PY - 2012/7/28

Y1 - 2012/7/28

N2 - The use of single-walled carbon nanotubes (CNT) thin films to replace conventional fluorine-doped tin oxide (FTO) and both FTO and platinum (Pt) as the counter electrode in dye sensitized solar cells (DSSC) requires surface modification due to high sheet resistance and charge transfer resistance. In this paper, we report a simple, solution-based method of preparing FTO-free counter electrodes based on metal (Pt) or metal sulfide (Co 8.4S 8, Ni 3S 2) nanoparticles/CNT composite films to improve device performance. Based on electrochemical studies, the relative catalytic activity of the composite films was Pt > Co 8.4S 8 > Ni 3S 2. We achieved a maximum efficiency of 3.76% for the device with an FTO-free counter electrode (Pt/CNT). The device with an FTO- and Pt-free (CoS/CNT) counter electrode gives 3.13% efficiency.

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Metal/metal sulfide functionalized single-walled carbon nanotubes: FTO-free counter electrodes for dye sensitized solar cells

Abstract

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