Charge storage and transfer in dye-sensitized solar cells: A study by electrochemical impedance spectroscopy

The Vinh Nguyen; Dae Jin Choi; Hyun Cheol Lee; Ki Ju Kim; O. Bong Yang

Charge storage and transfer in dye-sensitized solar cells: A study by electrochemical impedance spectroscopy

The Vinh Nguyen^*
, Dae Jin Choi
, Hyun Cheol Lee
, Ki Ju Kim
, O. Bong Yang

^*Corresponding author for this work

Division of Chemical Engineering

Jeonbuk National University

Research output: Contribution to journal › Conference article › peer-review

5 Scopus citations

Abstract

AC impedance measurement was found as an efficient tool to elucidate the charge storage and transfer in dye-sensitized solar cells. The imaginary impedance of the apparent space charge region at the dye adsorbed TiO ₂/electrolyte interface was inversely dependent on the density of photoexcited electrons. For a given TiO₂ material, the thicker the thickness of the substrate, the higher the charge storage and the slower the charge transfer of the resulting DSC. Accordingly, the existence of an optimized thickness of TiO₂ substrate is inherent for the highest overall conversion efficiency of a DSC fabricated with a given TiO₂ material. The combination of the charge storage or the density of photoexcited electrons in the porous TiO₂ film and the prompt charge transfer between it and TiO₂/TCO glass interface was worthwhile to note for improvement on the overall conversion efficiency of DSC.

Original language	English
Pages (from-to)	167-170
Number of pages	4
Journal	Conference Record of the IEEE Photovoltaic Specialists Conference
State	Published - 2005
Event	31st IEEE Photovoltaic Specialists Conference - 2005 - Lake Buena Vista, FL, United States Duration: 2005.01.3 → 2005.01.7

UN SDGs

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

SDG 7 Affordable and Clean Energy

Quacquarelli Symonds(QS) Subject Topics

Engineering - Mechanical
Computer Science & Information Systems
Engineering - Electrical & Electronic
Engineering - Petroleum

Cite this

@article{c4d0ab3035ad486ab750bd38c66032aa,

title = "Charge storage and transfer in dye-sensitized solar cells: A study by electrochemical impedance spectroscopy",

abstract = "AC impedance measurement was found as an efficient tool to elucidate the charge storage and transfer in dye-sensitized solar cells. The imaginary impedance of the apparent space charge region at the dye adsorbed TiO 2/electrolyte interface was inversely dependent on the density of photoexcited electrons. For a given TiO2 material, the thicker the thickness of the substrate, the higher the charge storage and the slower the charge transfer of the resulting DSC. Accordingly, the existence of an optimized thickness of TiO2 substrate is inherent for the highest overall conversion efficiency of a DSC fabricated with a given TiO2 material. The combination of the charge storage or the density of photoexcited electrons in the porous TiO2 film and the prompt charge transfer between it and TiO2/TCO glass interface was worthwhile to note for improvement on the overall conversion efficiency of DSC.",

author = "Nguyen, \{The Vinh\} and Choi, \{Dae Jin\} and Lee, \{Hyun Cheol\} and Kim, \{Ki Ju\} and Yang, \{O. Bong\}",

year = "2005",

language = "English",

pages = "167--170",

journal = "Conference Record of the IEEE Photovoltaic Specialists Conference",

issn = "0160-8371",

note = "31st IEEE Photovoltaic Specialists Conference - 2005 ; Conference date: 03-01-2005 Through 07-01-2005",

}

TY - JOUR

T1 - Charge storage and transfer in dye-sensitized solar cells

T2 - 31st IEEE Photovoltaic Specialists Conference - 2005

AU - Nguyen, The Vinh

AU - Choi, Dae Jin

AU - Lee, Hyun Cheol

AU - Kim, Ki Ju

AU - Yang, O. Bong

PY - 2005

Y1 - 2005

N2 - AC impedance measurement was found as an efficient tool to elucidate the charge storage and transfer in dye-sensitized solar cells. The imaginary impedance of the apparent space charge region at the dye adsorbed TiO 2/electrolyte interface was inversely dependent on the density of photoexcited electrons. For a given TiO2 material, the thicker the thickness of the substrate, the higher the charge storage and the slower the charge transfer of the resulting DSC. Accordingly, the existence of an optimized thickness of TiO2 substrate is inherent for the highest overall conversion efficiency of a DSC fabricated with a given TiO2 material. The combination of the charge storage or the density of photoexcited electrons in the porous TiO2 film and the prompt charge transfer between it and TiO2/TCO glass interface was worthwhile to note for improvement on the overall conversion efficiency of DSC.

AB - AC impedance measurement was found as an efficient tool to elucidate the charge storage and transfer in dye-sensitized solar cells. The imaginary impedance of the apparent space charge region at the dye adsorbed TiO 2/electrolyte interface was inversely dependent on the density of photoexcited electrons. For a given TiO2 material, the thicker the thickness of the substrate, the higher the charge storage and the slower the charge transfer of the resulting DSC. Accordingly, the existence of an optimized thickness of TiO2 substrate is inherent for the highest overall conversion efficiency of a DSC fabricated with a given TiO2 material. The combination of the charge storage or the density of photoexcited electrons in the porous TiO2 film and the prompt charge transfer between it and TiO2/TCO glass interface was worthwhile to note for improvement on the overall conversion efficiency of DSC.

UR - https://www.scopus.com/pages/publications/27944459641

M3 - Conference article

AN - SCOPUS:27944459641

SN - 0160-8371

SP - 167

EP - 170

JO - Conference Record of the IEEE Photovoltaic Specialists Conference

JF - Conference Record of the IEEE Photovoltaic Specialists Conference

Y2 - 3 January 2005 through 7 January 2005

ER -

Charge storage and transfer in dye-sensitized solar cells: A study by electrochemical impedance spectroscopy

Abstract

UN SDGs

Quacquarelli Symonds(QS) Subject Topics

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