Adsorption and redox chemistry of cis-RuLL'(SCN)(2) with L=4,4'-dicarboxylic acid-2,2'-bipyridine and L'=4,4'-dinonyl-2,2'-bipyridine (Z907) at FTO and TiO2 electrode surfaces

Alberto Fattori; Laurence M Peter; K L McCall; N Robertson; Frank Marken

doi:10.1007/s10008-010-1034-8

Adsorption and redox chemistry of cis-RuLL'(SCN)(2) with L=4,4'-dicarboxylic acid-2,2'-bipyridine and L'=4,4'-dinonyl-2,2'-bipyridine (Z907) at FTO and TiO2 electrode surfaces

Alberto Fattori, Laurence M Peter, K L McCall, N Robertson, Frank Marken

Department of Chemistry

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

23 Citations (SciVal)

Abstract

The electrochemical and spectroelectrochemical properties of the sensitizer dye Z907 (cis-RuLL'(SCN)(2) with L=4,4'-dicarboxylic acid-2,2'-bipyridine and L'=4,4'-dinonyl-2,2'-bipyridine) adsorbed on fluorine-doped tin oxide (FTO) and TiO2 surfaces have been investigated. Langmuirian binding constants for FTO and TiO2 are estimated to be 3 x 10(6) M-1 and 4 x 10(4) M-1, respectively. The Ru(III/II) redox process is monitored by voltammetry and by spectroelectrochemistry. For Z907 adsorbed onto FTO, a slow EC-type electrochemical reaction is observed with a chemical rate constant of ca. k = 10(-2) s(-1) leading to Z907 dye degradation of a fraction of the FTO-adsorbed dye. The Z907 adsorption conditions affect the degradation process. No significant degradation was observed for TiO2-adsorbed dye. Degradation of the Z907 dye affects the electron hopping conduction at the FTO-TiO2 interface.

Original language	English
Pages (from-to)	1929-1936
Number of pages	8
Journal	Journal of Solid State Electrochemistry
Volume	14
Issue number	10
DOIs	https://doi.org/10.1007/s10008-010-1034-8
Publication status	Published - Oct 2010

Bibliographical note

Symposium on Nanostructured Materials for Electrochemical Energy Systems - Lithium Batteries, Supercapacitors and Fuel Cells held at ICMAT 2009. 28 June - 3 July 2009. Singapore.

Keywords

semiconductor
TiO2
dye
voltammetry
solar cell
FTO
mechanism
sensitizer
conduction

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10.1007/s10008-010-1034-8

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Adsorption and redox chemistry of cis-RuLL'(SCN)(2) with L=4,4'-dicarboxylic acid-2,2'-bipyridine and L'=4,4'-dinonyl-2,2'-bipyridine (Z907) at FTO and TiO2 electrode surfaces. / Fattori, Alberto; Peter, Laurence M; McCall, K L et al.
In: Journal of Solid State Electrochemistry, Vol. 14, No. 10, 10.2010, p. 1929-1936.

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

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title = "Adsorption and redox chemistry of cis-RuLL'(SCN)(2) with L=4,4'-dicarboxylic acid-2,2'-bipyridine and L'=4,4'-dinonyl-2,2'-bipyridine (Z907) at FTO and TiO2 electrode surfaces",

abstract = "The electrochemical and spectroelectrochemical properties of the sensitizer dye Z907 (cis-RuLL'(SCN)(2) with L=4,4'-dicarboxylic acid-2,2'-bipyridine and L'=4,4'-dinonyl-2,2'-bipyridine) adsorbed on fluorine-doped tin oxide (FTO) and TiO2 surfaces have been investigated. Langmuirian binding constants for FTO and TiO2 are estimated to be 3 x 10(6) M-1 and 4 x 10(4) M-1, respectively. The Ru(III/II) redox process is monitored by voltammetry and by spectroelectrochemistry. For Z907 adsorbed onto FTO, a slow EC-type electrochemical reaction is observed with a chemical rate constant of ca. k = 10(-2) s(-1) leading to Z907 dye degradation of a fraction of the FTO-adsorbed dye. The Z907 adsorption conditions affect the degradation process. No significant degradation was observed for TiO2-adsorbed dye. Degradation of the Z907 dye affects the electron hopping conduction at the FTO-TiO2 interface.",

keywords = "semiconductor, TiO2, dye, voltammetry, solar cell, FTO, mechanism, sensitizer, conduction",

author = "Alberto Fattori and Peter, {Laurence M} and McCall, {K L} and N Robertson and Frank Marken",

note = "Symposium on Nanostructured Materials for Electrochemical Energy Systems - Lithium Batteries, Supercapacitors and Fuel Cells held at ICMAT 2009. 28 June - 3 July 2009. Singapore.",

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AU - Fattori, Alberto

AU - Peter, Laurence M

AU - McCall, K L

AU - Robertson, N

AU - Marken, Frank

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PY - 2010/10

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N2 - The electrochemical and spectroelectrochemical properties of the sensitizer dye Z907 (cis-RuLL'(SCN)(2) with L=4,4'-dicarboxylic acid-2,2'-bipyridine and L'=4,4'-dinonyl-2,2'-bipyridine) adsorbed on fluorine-doped tin oxide (FTO) and TiO2 surfaces have been investigated. Langmuirian binding constants for FTO and TiO2 are estimated to be 3 x 10(6) M-1 and 4 x 10(4) M-1, respectively. The Ru(III/II) redox process is monitored by voltammetry and by spectroelectrochemistry. For Z907 adsorbed onto FTO, a slow EC-type electrochemical reaction is observed with a chemical rate constant of ca. k = 10(-2) s(-1) leading to Z907 dye degradation of a fraction of the FTO-adsorbed dye. The Z907 adsorption conditions affect the degradation process. No significant degradation was observed for TiO2-adsorbed dye. Degradation of the Z907 dye affects the electron hopping conduction at the FTO-TiO2 interface.

AB - The electrochemical and spectroelectrochemical properties of the sensitizer dye Z907 (cis-RuLL'(SCN)(2) with L=4,4'-dicarboxylic acid-2,2'-bipyridine and L'=4,4'-dinonyl-2,2'-bipyridine) adsorbed on fluorine-doped tin oxide (FTO) and TiO2 surfaces have been investigated. Langmuirian binding constants for FTO and TiO2 are estimated to be 3 x 10(6) M-1 and 4 x 10(4) M-1, respectively. The Ru(III/II) redox process is monitored by voltammetry and by spectroelectrochemistry. For Z907 adsorbed onto FTO, a slow EC-type electrochemical reaction is observed with a chemical rate constant of ca. k = 10(-2) s(-1) leading to Z907 dye degradation of a fraction of the FTO-adsorbed dye. The Z907 adsorption conditions affect the degradation process. No significant degradation was observed for TiO2-adsorbed dye. Degradation of the Z907 dye affects the electron hopping conduction at the FTO-TiO2 interface.

KW - semiconductor

KW - TiO2

KW - dye

KW - voltammetry

KW - solar cell

KW - FTO

KW - mechanism

KW - sensitizer

KW - conduction

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DO - 10.1007/s10008-010-1034-8

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SN - 1432-8488

VL - 14

SP - 1929

EP - 1936

JO - Journal of Solid State Electrochemistry

JF - Journal of Solid State Electrochemistry

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ER -

Adsorption and redox chemistry of cis-RuLL'(SCN)(2) with L=4,4'-dicarboxylic acid-2,2'-bipyridine and L'=4,4'-dinonyl-2,2'-bipyridine (Z907) at FTO and TiO2 electrode surfaces

Abstract

Bibliographical note

Keywords

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METAL SUBSTRATE MOUNTED FLEXIBLE DYE SENSITISED SEMICONDUCTO R SOLAR CELLS

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Adsorption and redox chemistry of cis-RuLL'(SCN)(2) with L=4,4'-dicarboxylic acid-2,2'-bipyridine and L'=4,4'-dinonyl-2,2'-bipyridine (Z907) at FTO and TiO2 electrode surfaces

Abstract

Bibliographical note

Keywords

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METAL SUBSTRATE MOUNTED FLEXIBLE DYE SENSITISED SEMICONDUCTO R SOLAR CELLS

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