Effects of hydroxyl group numbers of coadsorbents on photovoltaic performances of dye-sensitized solar cells

Hong Lin; Yizhu Liu; Chuanjie Liu; Xin Li; Heping Shen; Jing Zhang; Tingli Ma; Jianbao Li

doi:10.1016/j.jelechem.2010.12.025

Effects of hydroxyl group numbers of coadsorbents on photovoltaic performances of dye-sensitized solar cells

Hong Lin^*, Yizhu Liu, Chuanjie Liu, Xin Li, Heping Shen, Jing Zhang, Tingli Ma, Jianbao Li

^*Corresponding author for this work

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

21 Citations (Scopus)

Abstract

Surface treatment of ruthenium dye (Bu₄N)₂[Ru(dcbpyH) ₂(NCS)₂]-sensitized TiO₂ films using diethyl 4-methylphenylphosphonate as a coadsorbent results in large improvements in DSC performance, 24% larger overall conversion efficiency and 55 mV higher open-circuit voltage without current penalty. Introducing another two coadsorbents ethyl 4-methylphenylphosphonate and 4-methoxyphenylphosphonic acid brings in negative effects. Analysis by impedance spectroscopy indicated that this was attributed to different numbers of proton-releasing hydroxyl groups of the coadsorbents and consequently different proton-adsorbing chemical environments on the surface of TiO₂ photoanodes.

Original language	English
Pages (from-to)	81-85
Number of pages	5
Journal	Journal of Electroanalytical Chemistry
Volume	653
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jelechem.2010.12.025
Publication status	Published - 1 Apr 2011
Externally published	Yes

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10.1016/j.jelechem.2010.12.025

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@article{c1aa33dcd96e4f37a7a718c1256fca04,

title = "Effects of hydroxyl group numbers of coadsorbents on photovoltaic performances of dye-sensitized solar cells",

abstract = "Surface treatment of ruthenium dye (Bu4N)2[Ru(dcbpyH) 2(NCS)2]-sensitized TiO2 films using diethyl 4-methylphenylphosphonate as a coadsorbent results in large improvements in DSC performance, 24% larger overall conversion efficiency and 55 mV higher open-circuit voltage without current penalty. Introducing another two coadsorbents ethyl 4-methylphenylphosphonate and 4-methoxyphenylphosphonic acid brings in negative effects. Analysis by impedance spectroscopy indicated that this was attributed to different numbers of proton-releasing hydroxyl groups of the coadsorbents and consequently different proton-adsorbing chemical environments on the surface of TiO2 photoanodes.",

keywords = "Coadsorbent, Dye-sensitized solar cell, Hydroxyl group, Impedance spectroscopy",

author = "Hong Lin and Yizhu Liu and Chuanjie Liu and Xin Li and Heping Shen and Jing Zhang and Tingli Ma and Jianbao Li",

year = "2011",

month = apr,

day = "1",

doi = "10.1016/j.jelechem.2010.12.025",

language = "English",

volume = "653",

pages = "81--85",

journal = "Journal of Electroanalytical Chemistry",

issn = "1572-6657",

publisher = "Elsevier B.V.",

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}

TY - JOUR

T1 - Effects of hydroxyl group numbers of coadsorbents on photovoltaic performances of dye-sensitized solar cells

AU - Lin, Hong

AU - Liu, Yizhu

AU - Liu, Chuanjie

AU - Li, Xin

AU - Shen, Heping

AU - Zhang, Jing

AU - Ma, Tingli

AU - Li, Jianbao

PY - 2011/4/1

Y1 - 2011/4/1

N2 - Surface treatment of ruthenium dye (Bu4N)2[Ru(dcbpyH) 2(NCS)2]-sensitized TiO2 films using diethyl 4-methylphenylphosphonate as a coadsorbent results in large improvements in DSC performance, 24% larger overall conversion efficiency and 55 mV higher open-circuit voltage without current penalty. Introducing another two coadsorbents ethyl 4-methylphenylphosphonate and 4-methoxyphenylphosphonic acid brings in negative effects. Analysis by impedance spectroscopy indicated that this was attributed to different numbers of proton-releasing hydroxyl groups of the coadsorbents and consequently different proton-adsorbing chemical environments on the surface of TiO2 photoanodes.

AB - Surface treatment of ruthenium dye (Bu4N)2[Ru(dcbpyH) 2(NCS)2]-sensitized TiO2 films using diethyl 4-methylphenylphosphonate as a coadsorbent results in large improvements in DSC performance, 24% larger overall conversion efficiency and 55 mV higher open-circuit voltage without current penalty. Introducing another two coadsorbents ethyl 4-methylphenylphosphonate and 4-methoxyphenylphosphonic acid brings in negative effects. Analysis by impedance spectroscopy indicated that this was attributed to different numbers of proton-releasing hydroxyl groups of the coadsorbents and consequently different proton-adsorbing chemical environments on the surface of TiO2 photoanodes.

KW - Coadsorbent

KW - Dye-sensitized solar cell

KW - Hydroxyl group

KW - Impedance spectroscopy

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U2 - 10.1016/j.jelechem.2010.12.025

DO - 10.1016/j.jelechem.2010.12.025

M3 - Article

SN - 1572-6657

VL - 653

SP - 81

EP - 85

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

IS - 1-2

ER -

Effects of hydroxyl group numbers of coadsorbents on photovoltaic performances of dye-sensitized solar cells

Abstract

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