Stable, high-efficiency ionic-liquid-based mesoscopic dye-sensitized solar cells

Daibin Kuang; Cedric Klein; Zhipan Zhang; Seigo Ito; Jacques E. Moser; Shaik M. Zakeeruddin; Michael Grätzel

doi:10.1002/smll.200700211

Stable, high-efficiency ionic-liquid-based mesoscopic dye-sensitized solar cells

Daibin Kuang^*, Cedric Klein, Zhipan Zhang, Seigo Ito, Jacques E. Moser, Shaik M. Zakeeruddin, Michael Grätzel

^*Corresponding author for this work

Swiss Federal Institute of Technology Lausanne

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

184 Citations (Scopus)

Abstract

Efficient and stable mesoscopic dye-sensitized solar cells (DSCs) introducing a low-viscosity binary ionic liquid (1-propyl-3-methyl-imidazolium iodide (PMII) and 1-ethyl-3-methyl-imidazolium tetracyanoborate (EMIB(CN) ₄)) electrolyte in combination with a new high-molar-extinction- coefficient ruthenium complex, Ru(2,2′-bipyridine-4,4′-dicarboxylic acid)(4,4′-bis(2-(4-tert-butyloxy -phenyl)ethenyl) -2,2′-bipyridine) (NCS)₂, are demonstrated. The dependence of photovoltaic performance, charge transport and electron lifetime on the composition of the binary ionic-liquid electrolyte with different ratios of PMII/EMIB(CN) ₄ were investigated by electrochemical impedance and photovoltage transient techniques. A photovoltaic conversion efficiency of 7.6% was obtained under simulated full sunlight illumination, which is a record for solvent-free DSCs. These devices exhibit excellent stability at 80°C in the dark or under visible-light soaking at 60°C during 1000 h of accelerated tests.

Original language	English
Pages (from-to)	2094-2102
Number of pages	9
Journal	Small
Volume	3
Issue number	12
DOIs	https://doi.org/10.1002/smll.200700211
Publication status	Published - Dec 2007
Externally published	Yes

Keywords

Dyes
Ionic liquids
Nanocrystals
Solar cells

UN SDGs

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

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10.1002/smll.200700211

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title = "Stable, high-efficiency ionic-liquid-based mesoscopic dye-sensitized solar cells",

abstract = "Efficient and stable mesoscopic dye-sensitized solar cells (DSCs) introducing a low-viscosity binary ionic liquid (1-propyl-3-methyl-imidazolium iodide (PMII) and 1-ethyl-3-methyl-imidazolium tetracyanoborate (EMIB(CN) 4)) electrolyte in combination with a new high-molar-extinction- coefficient ruthenium complex, Ru(2,2′-bipyridine-4,4′-dicarboxylic acid)(4,4′-bis(2-(4-tert-butyloxy -phenyl)ethenyl) -2,2′-bipyridine) (NCS)2, are demonstrated. The dependence of photovoltaic performance, charge transport and electron lifetime on the composition of the binary ionic-liquid electrolyte with different ratios of PMII/EMIB(CN) 4 were investigated by electrochemical impedance and photovoltage transient techniques. A photovoltaic conversion efficiency of 7.6% was obtained under simulated full sunlight illumination, which is a record for solvent-free DSCs. These devices exhibit excellent stability at 80°C in the dark or under visible-light soaking at 60°C during 1000 h of accelerated tests.",

keywords = "Dyes, Ionic liquids, Nanocrystals, Solar cells",

author = "Daibin Kuang and Cedric Klein and Zhipan Zhang and Seigo Ito and Moser, {Jacques E.} and Zakeeruddin, {Shaik M.} and Michael Gr{\"a}tzel",

year = "2007",

month = dec,

doi = "10.1002/smll.200700211",

language = "English",

volume = "3",

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AU - Kuang, Daibin

AU - Klein, Cedric

AU - Zhang, Zhipan

AU - Ito, Seigo

AU - Moser, Jacques E.

AU - Zakeeruddin, Shaik M.

AU - Grätzel, Michael

PY - 2007/12

Y1 - 2007/12

N2 - Efficient and stable mesoscopic dye-sensitized solar cells (DSCs) introducing a low-viscosity binary ionic liquid (1-propyl-3-methyl-imidazolium iodide (PMII) and 1-ethyl-3-methyl-imidazolium tetracyanoborate (EMIB(CN) 4)) electrolyte in combination with a new high-molar-extinction- coefficient ruthenium complex, Ru(2,2′-bipyridine-4,4′-dicarboxylic acid)(4,4′-bis(2-(4-tert-butyloxy -phenyl)ethenyl) -2,2′-bipyridine) (NCS)2, are demonstrated. The dependence of photovoltaic performance, charge transport and electron lifetime on the composition of the binary ionic-liquid electrolyte with different ratios of PMII/EMIB(CN) 4 were investigated by electrochemical impedance and photovoltage transient techniques. A photovoltaic conversion efficiency of 7.6% was obtained under simulated full sunlight illumination, which is a record for solvent-free DSCs. These devices exhibit excellent stability at 80°C in the dark or under visible-light soaking at 60°C during 1000 h of accelerated tests.

AB - Efficient and stable mesoscopic dye-sensitized solar cells (DSCs) introducing a low-viscosity binary ionic liquid (1-propyl-3-methyl-imidazolium iodide (PMII) and 1-ethyl-3-methyl-imidazolium tetracyanoborate (EMIB(CN) 4)) electrolyte in combination with a new high-molar-extinction- coefficient ruthenium complex, Ru(2,2′-bipyridine-4,4′-dicarboxylic acid)(4,4′-bis(2-(4-tert-butyloxy -phenyl)ethenyl) -2,2′-bipyridine) (NCS)2, are demonstrated. The dependence of photovoltaic performance, charge transport and electron lifetime on the composition of the binary ionic-liquid electrolyte with different ratios of PMII/EMIB(CN) 4 were investigated by electrochemical impedance and photovoltage transient techniques. A photovoltaic conversion efficiency of 7.6% was obtained under simulated full sunlight illumination, which is a record for solvent-free DSCs. These devices exhibit excellent stability at 80°C in the dark or under visible-light soaking at 60°C during 1000 h of accelerated tests.

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KW - Ionic liquids

KW - Nanocrystals

KW - Solar cells

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Stable, high-efficiency ionic-liquid-based mesoscopic dye-sensitized solar cells

Abstract

Keywords

UN SDGs

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