Quantitative study of solvent effects on electron injection efficiency for black-dye-sensitized nanocrystalline TiO2 films

Ryuzi Katoh; Motohiro Kasuya; Akihiro Furube; Nobuhiro Fuke; Naoki Koide; Liyuan Han

doi:10.1016/j.solmat.2008.09.006

Quantitative study of solvent effects on electron injection efficiency for black-dye-sensitized nanocrystalline TiO₂ films

Ryuzi Katoh, Motohiro Kasuya, Akihiro Furube, Nobuhiro Fuke, Naoki Koide, Liyuan Han

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

35 Citations (Scopus)

Abstract

The effects of various solvents on the electron injection efficiency for nanocrystalline TiO₂ films sensitized with the black dye trithiocyanato(4,4′,4″-tricarboxy-2,2′:6′,2″-terpyridine)ruthenium(II) (Ru(tcterpy)(NCS)₃) have been studied quantitatively. The electron injection efficiency for the film dried in air was estimated as 0.4 using a time-resolved microwave conductivity technique. Using transient absorption measurements, we estimated the efficiency of electron injection for TiO₂ films in various solvents. Acetonitrile, which is widely considered to be the best solvent for solar cell performance, had the highest efficiency (∼0.65), and other solvents (3-methoxypropionitrile, γ-butyrolactone, and propylene carbonate) had lower efficiencies. These results suggest that characteristic interactions between the black dye and the -CN groups of solvents are important for achieving higher electron injection efficiency.

Original language	English
Pages (from-to)	698-703
Number of pages	6
Journal	Solar Energy Materials and Solar Cells
Volume	93
Issue number	6-7
DOIs	https://doi.org/10.1016/j.solmat.2008.09.006
Publication status	Published - 2009 Jun
Externally published	Yes

Keywords

Black dye
Dye-sensitized solar cells
Electron injection process
TiO
Transient absorption spectroscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films

UN SDGs

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

Access to Document

10.1016/j.solmat.2008.09.006

Cite this

@article{c9e63a0a5e644729a51a3d0ab324e08b,

title = "Quantitative study of solvent effects on electron injection efficiency for black-dye-sensitized nanocrystalline TiO2 films",

abstract = "The effects of various solvents on the electron injection efficiency for nanocrystalline TiO2 films sensitized with the black dye trithiocyanato(4,4′,4″-tricarboxy-2,2′:6′,2″-terpyridine)ruthenium(II) (Ru(tcterpy)(NCS)3) have been studied quantitatively. The electron injection efficiency for the film dried in air was estimated as 0.4 using a time-resolved microwave conductivity technique. Using transient absorption measurements, we estimated the efficiency of electron injection for TiO2 films in various solvents. Acetonitrile, which is widely considered to be the best solvent for solar cell performance, had the highest efficiency (∼0.65), and other solvents (3-methoxypropionitrile, γ-butyrolactone, and propylene carbonate) had lower efficiencies. These results suggest that characteristic interactions between the black dye and the -CN groups of solvents are important for achieving higher electron injection efficiency.",

keywords = "Black dye, Dye-sensitized solar cells, Electron injection process, TiO, Transient absorption spectroscopy",

author = "Ryuzi Katoh and Motohiro Kasuya and Akihiro Furube and Nobuhiro Fuke and Naoki Koide and Liyuan Han",

note = "Funding Information: We gratefully acknowledge financial support from the New Energy and Industrial Technology Development Organization (NEDO). Copyright: Copyright 2009 Elsevier B.V., All rights reserved.",

year = "2009",

month = jun,

doi = "10.1016/j.solmat.2008.09.006",

language = "English",

volume = "93",

pages = "698--703",

journal = "Solar Cells",

issn = "0927-0248",

publisher = "Elsevier",

number = "6-7",

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TY - JOUR

T1 - Quantitative study of solvent effects on electron injection efficiency for black-dye-sensitized nanocrystalline TiO2 films

AU - Katoh, Ryuzi

AU - Kasuya, Motohiro

AU - Furube, Akihiro

AU - Fuke, Nobuhiro

AU - Koide, Naoki

AU - Han, Liyuan

N1 - Funding Information: We gratefully acknowledge financial support from the New Energy and Industrial Technology Development Organization (NEDO). Copyright: Copyright 2009 Elsevier B.V., All rights reserved.

PY - 2009/6

Y1 - 2009/6

N2 - The effects of various solvents on the electron injection efficiency for nanocrystalline TiO2 films sensitized with the black dye trithiocyanato(4,4′,4″-tricarboxy-2,2′:6′,2″-terpyridine)ruthenium(II) (Ru(tcterpy)(NCS)3) have been studied quantitatively. The electron injection efficiency for the film dried in air was estimated as 0.4 using a time-resolved microwave conductivity technique. Using transient absorption measurements, we estimated the efficiency of electron injection for TiO2 films in various solvents. Acetonitrile, which is widely considered to be the best solvent for solar cell performance, had the highest efficiency (∼0.65), and other solvents (3-methoxypropionitrile, γ-butyrolactone, and propylene carbonate) had lower efficiencies. These results suggest that characteristic interactions between the black dye and the -CN groups of solvents are important for achieving higher electron injection efficiency.

AB - The effects of various solvents on the electron injection efficiency for nanocrystalline TiO2 films sensitized with the black dye trithiocyanato(4,4′,4″-tricarboxy-2,2′:6′,2″-terpyridine)ruthenium(II) (Ru(tcterpy)(NCS)3) have been studied quantitatively. The electron injection efficiency for the film dried in air was estimated as 0.4 using a time-resolved microwave conductivity technique. Using transient absorption measurements, we estimated the efficiency of electron injection for TiO2 films in various solvents. Acetonitrile, which is widely considered to be the best solvent for solar cell performance, had the highest efficiency (∼0.65), and other solvents (3-methoxypropionitrile, γ-butyrolactone, and propylene carbonate) had lower efficiencies. These results suggest that characteristic interactions between the black dye and the -CN groups of solvents are important for achieving higher electron injection efficiency.

KW - Black dye

KW - Dye-sensitized solar cells

KW - Electron injection process

KW - TiO

KW - Transient absorption spectroscopy

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