Suppression of photocorrosion in CdS/CdSe quantum dot-sensitized solar cells: Formation of a thin polymer layer on the photoelectrode surface

Wonjoo Lee; Hae Jung Son; Doh Kwon Lee; Bongsoo Kim; Honggon Kim; Kyungkon Kim; Min Jae Ko

doi:10.1016/j.synthmet.2013.01.008

Suppression of photocorrosion in CdS/CdSe quantum dot-sensitized solar cells: Formation of a thin polymer layer on the photoelectrode surface

Wonjoo Lee, Hae Jung Son, Doh Kwon Lee, Bongsoo Kim, Honggon Kim, Kyungkon Kim, Min Jae Ko

Department of Chemistry & Nanoscience

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

25 Scopus citations

Abstract

Suppression of the photocorrosion process is an important subject for quantum dot-sensitized solar cells (QSSCs). A method is reported to suppress the substitution and anodic oxidation reaction in the photocorrosion process of CdS/CdSe QSSCs through the addition of poly(ethyleneoxide) (PEO) to liquid polysulfide electrolyte. In the presence of PEO in the electrolyte, a thin PEO layer is formed on the quantum dot (QDs) film using coordination bonding between the ether group in the PEO and Cd metal ions in the QDs, acting as passivation layer to suppress substitution reaction and anodic oxidation. Due to the passivation effect of PEO thin film, the photostability of QSSCs is significantly improved compared to the liquid polysulfide electrolyte without PEO.

Original language	English
Pages (from-to)	60-63
Number of pages	4
Journal	Synthetic Metals
Volume	165
Issue number	1
DOIs	https://doi.org/10.1016/j.synthmet.2013.01.008
State	Published - 2013

Bibliographical note

Funding Information:
This research was supported by the Global Frontier R&D Program on Center for Multiscale Energy System funded by the National Research Foundation under the Ministry of Education, Science and Technology, Korea ( 2012M3A6A705 ); by the Pioneer Research Program funded by the National Research Foundation under the Ministry of Education, Science and Technology, Korea ( 2012-0005955 ); by the New & Renewable Energy Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant ( 2010T100100651 ) funded by the Korea government Ministry of Knowledge Economy ; by the National Research Foundation of Korea Grant funded by the Korean Government (MEST) (2012, University-Institute cooperation program).

Keywords

Anodic oxidation
Passivation layer
Photocorrosion
Photostability
Quantum dot-sensitized solar cells

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10.1016/j.synthmet.2013.01.008

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title = "Suppression of photocorrosion in CdS/CdSe quantum dot-sensitized solar cells: Formation of a thin polymer layer on the photoelectrode surface",

abstract = "Suppression of the photocorrosion process is an important subject for quantum dot-sensitized solar cells (QSSCs). A method is reported to suppress the substitution and anodic oxidation reaction in the photocorrosion process of CdS/CdSe QSSCs through the addition of poly(ethyleneoxide) (PEO) to liquid polysulfide electrolyte. In the presence of PEO in the electrolyte, a thin PEO layer is formed on the quantum dot (QDs) film using coordination bonding between the ether group in the PEO and Cd metal ions in the QDs, acting as passivation layer to suppress substitution reaction and anodic oxidation. Due to the passivation effect of PEO thin film, the photostability of QSSCs is significantly improved compared to the liquid polysulfide electrolyte without PEO.",

keywords = "Anodic oxidation, Passivation layer, Photocorrosion, Photostability, Quantum dot-sensitized solar cells",

author = "Wonjoo Lee and Son, {Hae Jung} and Lee, {Doh Kwon} and Bongsoo Kim and Honggon Kim and Kyungkon Kim and Ko, {Min Jae}",

note = "Funding Information: This research was supported by the Global Frontier R&D Program on Center for Multiscale Energy System funded by the National Research Foundation under the Ministry of Education, Science and Technology, Korea ( 2012M3A6A705 ); by the Pioneer Research Program funded by the National Research Foundation under the Ministry of Education, Science and Technology, Korea ( 2012-0005955 ); by the New & Renewable Energy Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant ( 2010T100100651 ) funded by the Korea government Ministry of Knowledge Economy ; by the National Research Foundation of Korea Grant funded by the Korean Government (MEST) (2012, University-Institute cooperation program). ",

year = "2013",

doi = "10.1016/j.synthmet.2013.01.008",

language = "English",

volume = "165",

pages = "60--63",

journal = "Synthetic Metals",

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T2 - Formation of a thin polymer layer on the photoelectrode surface

AU - Lee, Wonjoo

AU - Son, Hae Jung

AU - Lee, Doh Kwon

AU - Kim, Bongsoo

AU - Kim, Honggon

AU - Kim, Kyungkon

AU - Ko, Min Jae

N1 - Funding Information: This research was supported by the Global Frontier R&D Program on Center for Multiscale Energy System funded by the National Research Foundation under the Ministry of Education, Science and Technology, Korea ( 2012M3A6A705 ); by the Pioneer Research Program funded by the National Research Foundation under the Ministry of Education, Science and Technology, Korea ( 2012-0005955 ); by the New & Renewable Energy Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant ( 2010T100100651 ) funded by the Korea government Ministry of Knowledge Economy ; by the National Research Foundation of Korea Grant funded by the Korean Government (MEST) (2012, University-Institute cooperation program).

PY - 2013

Y1 - 2013

N2 - Suppression of the photocorrosion process is an important subject for quantum dot-sensitized solar cells (QSSCs). A method is reported to suppress the substitution and anodic oxidation reaction in the photocorrosion process of CdS/CdSe QSSCs through the addition of poly(ethyleneoxide) (PEO) to liquid polysulfide electrolyte. In the presence of PEO in the electrolyte, a thin PEO layer is formed on the quantum dot (QDs) film using coordination bonding between the ether group in the PEO and Cd metal ions in the QDs, acting as passivation layer to suppress substitution reaction and anodic oxidation. Due to the passivation effect of PEO thin film, the photostability of QSSCs is significantly improved compared to the liquid polysulfide electrolyte without PEO.

AB - Suppression of the photocorrosion process is an important subject for quantum dot-sensitized solar cells (QSSCs). A method is reported to suppress the substitution and anodic oxidation reaction in the photocorrosion process of CdS/CdSe QSSCs through the addition of poly(ethyleneoxide) (PEO) to liquid polysulfide electrolyte. In the presence of PEO in the electrolyte, a thin PEO layer is formed on the quantum dot (QDs) film using coordination bonding between the ether group in the PEO and Cd metal ions in the QDs, acting as passivation layer to suppress substitution reaction and anodic oxidation. Due to the passivation effect of PEO thin film, the photostability of QSSCs is significantly improved compared to the liquid polysulfide electrolyte without PEO.

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KW - Photocorrosion

KW - Photostability

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Suppression of photocorrosion in CdS/CdSe quantum dot-sensitized solar cells: Formation of a thin polymer layer on the photoelectrode surface

Abstract

Bibliographical note

Keywords

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