Azide-induced crosslinking of electrolytes and its application in solid-state dye-sensitized solar cells

Joo Hwan Koh; Jong Kwan Koh; Nam Gyu Park; Jong Hak Kim

doi:10.1016/j.solmat.2009.10.024

Azide-induced crosslinking of electrolytes and its application in solid-state dye-sensitized solar cells

Joo Hwan Koh, Jong Kwan Koh, Nam Gyu Park, Jong Hak Kim

Department of Chemical and Biomolecular Engineering

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

16 Citations (Scopus)

Abstract

Poly(ethylene glycol) containing terminal azide groups, i.e. PEG-N₃, was synthesized by reacting poly(ethylene glycol diglycidyl ether) (PEGDGE) with NaN₃, as confirmed by ¹H NMR and FT-IR spectroscopy. The resultant PEG-N₃ was complexed with LiI or ionic liquid (1-methyl-3-propylimidazolium iodide, MPII) and then crosslinked under UV irradiation to enhance the mechanical properties of the electrolytes. The ionic conductivity of electrolytes with MPII reached 1.6×10^-5 S/cm at 25 °C, which is ten-fold higher than that of electrolytes with LI (1.5×10^-6 S/cm), due to different chain mobility. A worm-like morphology of the TiO₂ nanoporous layer was observed in the FE-SEM micrographs, which resulted from the interfacial contact between the TiO₂ nanoparticles and the electrolytes. Dye-sensitized solar cells (DSSCs) employing electrolytes with MPII and LiI exhibited an energy conversion efficiency at 100 mW/cm² of 1.6% and 0.8%, respectively. Solar cell performances were further improved by up to 4.2% with careful optimization.

Original language	English
Pages (from-to)	436-441
Number of pages	6
Journal	Solar Energy Materials and Solar Cells
Volume	94
Issue number	3
DOIs	https://doi.org/10.1016/j.solmat.2009.10.024
Publication status	Published - 2010 Mar

Bibliographical note

Funding Information:
This work was supported by the MOCIE new and renewable energy R&D project under contract 2006-N-PV12-P-05. This work was also supported by the National Research Foundation (NRF) grant funded by the Korea government (MEST) through the Pioneer Research Center Program (2008-05103) and the Korean Center for Artificial Photosyntheis (KCAP) located in Sogang University (NRF-2009-C1AAA001-2009-0093879).

All Science Journal Classification (ASJC) codes

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)

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10.1016/j.solmat.2009.10.024

Cite this

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title = "Azide-induced crosslinking of electrolytes and its application in solid-state dye-sensitized solar cells",

abstract = "Poly(ethylene glycol) containing terminal azide groups, i.e. PEG-N3, was synthesized by reacting poly(ethylene glycol diglycidyl ether) (PEGDGE) with NaN3, as confirmed by 1H NMR and FT-IR spectroscopy. The resultant PEG-N3 was complexed with LiI or ionic liquid (1-methyl-3-propylimidazolium iodide, MPII) and then crosslinked under UV irradiation to enhance the mechanical properties of the electrolytes. The ionic conductivity of electrolytes with MPII reached 1.6×10-5 S/cm at 25 °C, which is ten-fold higher than that of electrolytes with LI (1.5×10-6 S/cm), due to different chain mobility. A worm-like morphology of the TiO2 nanoporous layer was observed in the FE-SEM micrographs, which resulted from the interfacial contact between the TiO2 nanoparticles and the electrolytes. Dye-sensitized solar cells (DSSCs) employing electrolytes with MPII and LiI exhibited an energy conversion efficiency at 100 mW/cm2 of 1.6% and 0.8%, respectively. Solar cell performances were further improved by up to 4.2% with careful optimization.",

author = "{Hwan Koh}, Joo and {Kwan Koh}, Jong and Park, {Nam Gyu} and Kim, {Jong Hak}",

note = "Funding Information: This work was supported by the MOCIE new and renewable energy R&D project under contract 2006-N-PV12-P-05. This work was also supported by the National Research Foundation (NRF) grant funded by the Korea government (MEST) through the Pioneer Research Center Program (2008-05103) and the Korean Center for Artificial Photosyntheis (KCAP) located in Sogang University (NRF-2009-C1AAA001-2009-0093879). ",

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AU - Hwan Koh, Joo

AU - Kwan Koh, Jong

AU - Park, Nam Gyu

AU - Kim, Jong Hak

N1 - Funding Information: This work was supported by the MOCIE new and renewable energy R&D project under contract 2006-N-PV12-P-05. This work was also supported by the National Research Foundation (NRF) grant funded by the Korea government (MEST) through the Pioneer Research Center Program (2008-05103) and the Korean Center for Artificial Photosyntheis (KCAP) located in Sogang University (NRF-2009-C1AAA001-2009-0093879).

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Y1 - 2010/3

N2 - Poly(ethylene glycol) containing terminal azide groups, i.e. PEG-N3, was synthesized by reacting poly(ethylene glycol diglycidyl ether) (PEGDGE) with NaN3, as confirmed by 1H NMR and FT-IR spectroscopy. The resultant PEG-N3 was complexed with LiI or ionic liquid (1-methyl-3-propylimidazolium iodide, MPII) and then crosslinked under UV irradiation to enhance the mechanical properties of the electrolytes. The ionic conductivity of electrolytes with MPII reached 1.6×10-5 S/cm at 25 °C, which is ten-fold higher than that of electrolytes with LI (1.5×10-6 S/cm), due to different chain mobility. A worm-like morphology of the TiO2 nanoporous layer was observed in the FE-SEM micrographs, which resulted from the interfacial contact between the TiO2 nanoparticles and the electrolytes. Dye-sensitized solar cells (DSSCs) employing electrolytes with MPII and LiI exhibited an energy conversion efficiency at 100 mW/cm2 of 1.6% and 0.8%, respectively. Solar cell performances were further improved by up to 4.2% with careful optimization.

AB - Poly(ethylene glycol) containing terminal azide groups, i.e. PEG-N3, was synthesized by reacting poly(ethylene glycol diglycidyl ether) (PEGDGE) with NaN3, as confirmed by 1H NMR and FT-IR spectroscopy. The resultant PEG-N3 was complexed with LiI or ionic liquid (1-methyl-3-propylimidazolium iodide, MPII) and then crosslinked under UV irradiation to enhance the mechanical properties of the electrolytes. The ionic conductivity of electrolytes with MPII reached 1.6×10-5 S/cm at 25 °C, which is ten-fold higher than that of electrolytes with LI (1.5×10-6 S/cm), due to different chain mobility. A worm-like morphology of the TiO2 nanoporous layer was observed in the FE-SEM micrographs, which resulted from the interfacial contact between the TiO2 nanoparticles and the electrolytes. Dye-sensitized solar cells (DSSCs) employing electrolytes with MPII and LiI exhibited an energy conversion efficiency at 100 mW/cm2 of 1.6% and 0.8%, respectively. Solar cell performances were further improved by up to 4.2% with careful optimization.

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Azide-induced crosslinking of electrolytes and its application in solid-state dye-sensitized solar cells

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

UN SDGs

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