Poly(butyl acrylate)/NaI/I 2 electrolytes for dye-sensitized nanocrystalline TiO 2 solar cells

Jong Hak Kim; Moon Sung Kang; Young Jin Kim; Jongok Won; Yong Soo Kang

doi:10.1016/j.ssi.2004.10.002

Poly(butyl acrylate)/NaI/I ₂ electrolytes for dye-sensitized nanocrystalline TiO ₂ solar cells

Jong Hak Kim, Moon Sung Kang, Young Jin Kim, Jongok Won, Yong Soo Kang

Department of Chemical and Biomolecular Engineering

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

80 Citations (Scopus)

Abstract

Solid polymer electrolytes consisting of NaI and I ₂ dissolved in poly(butyl acrylate) (PBA, M _w=99,000 g/mol) were prepared and applied to dye-sensitized solar cells (DSSC). Upon incorporation of salt, the free ester carbonyl stretching bands of PBA in FT-IR spectra shift to a lower wave number, confirming the complex formation between sodium ions and carbonyl oxygens. Coordinative interactions and structural changes of the PBA/NaI/I ₂ electrolytes have been also characterized by X-ray photoelectron spectroscopy (XPS), wide angle X-ray scattering (WAXS) and differential scanning calorimetry (DSC). The conversion efficiency of DSSC employing PBA/NaI/I ₂ electrolytes (1.66% at 10 mW/cm ²) is unexpectedly much higher than that employing poly(ethylene oxide) (PEO, M _w=1,000,000 g/mol)/NaI/I ₂ (0.07%), although the ionic conductivity of the former (2.1×10 ^-6 S/cm at room temperature) is not greatly different from that of the latter (1.6×10 ^-6 S/cm). The significantly improved solar cell performance is mostly attributed to (1) the easier penetration of PBA through TiO ₂ nanoporous layer due to its lower molecular weight, and (2) the sticky property of PBA to allow a better adhesion with the electrodes.

Original language	English
Pages (from-to)	579-584
Number of pages	6
Journal	Solid State Ionics
Volume	176
Issue number	5-6
DOIs	https://doi.org/10.1016/j.ssi.2004.10.002
Publication status	Published - 2005 Feb 14

Bibliographical note

Funding Information:
The authors gratefully acknowledge the financial support of the Ministry of Science and Technology of Korea through the Creative Research Initiatives Program.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1016/j.ssi.2004.10.002

Cite this

@article{5698de172c9d4e83a9530c4ccec5745f,

title = "Poly(butyl acrylate)/NaI/I 2 electrolytes for dye-sensitized nanocrystalline TiO 2 solar cells",

abstract = "Solid polymer electrolytes consisting of NaI and I 2 dissolved in poly(butyl acrylate) (PBA, M w=99,000 g/mol) were prepared and applied to dye-sensitized solar cells (DSSC). Upon incorporation of salt, the free ester carbonyl stretching bands of PBA in FT-IR spectra shift to a lower wave number, confirming the complex formation between sodium ions and carbonyl oxygens. Coordinative interactions and structural changes of the PBA/NaI/I 2 electrolytes have been also characterized by X-ray photoelectron spectroscopy (XPS), wide angle X-ray scattering (WAXS) and differential scanning calorimetry (DSC). The conversion efficiency of DSSC employing PBA/NaI/I 2 electrolytes (1.66% at 10 mW/cm 2) is unexpectedly much higher than that employing poly(ethylene oxide) (PEO, M w=1,000,000 g/mol)/NaI/I 2 (0.07%), although the ionic conductivity of the former (2.1×10 -6 S/cm at room temperature) is not greatly different from that of the latter (1.6×10 -6 S/cm). The significantly improved solar cell performance is mostly attributed to (1) the easier penetration of PBA through TiO 2 nanoporous layer due to its lower molecular weight, and (2) the sticky property of PBA to allow a better adhesion with the electrodes.",

author = "Kim, {Jong Hak} and Kang, {Moon Sung} and Kim, {Young Jin} and Jongok Won and Kang, {Yong Soo}",

note = "Funding Information: The authors gratefully acknowledge the financial support of the Ministry of Science and Technology of Korea through the Creative Research Initiatives Program.",

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T1 - Poly(butyl acrylate)/NaI/I 2 electrolytes for dye-sensitized nanocrystalline TiO 2 solar cells

AU - Kim, Jong Hak

AU - Kang, Moon Sung

AU - Kim, Young Jin

AU - Won, Jongok

AU - Kang, Yong Soo

N1 - Funding Information: The authors gratefully acknowledge the financial support of the Ministry of Science and Technology of Korea through the Creative Research Initiatives Program.

PY - 2005/2/14

Y1 - 2005/2/14

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AB - Solid polymer electrolytes consisting of NaI and I 2 dissolved in poly(butyl acrylate) (PBA, M w=99,000 g/mol) were prepared and applied to dye-sensitized solar cells (DSSC). Upon incorporation of salt, the free ester carbonyl stretching bands of PBA in FT-IR spectra shift to a lower wave number, confirming the complex formation between sodium ions and carbonyl oxygens. Coordinative interactions and structural changes of the PBA/NaI/I 2 electrolytes have been also characterized by X-ray photoelectron spectroscopy (XPS), wide angle X-ray scattering (WAXS) and differential scanning calorimetry (DSC). The conversion efficiency of DSSC employing PBA/NaI/I 2 electrolytes (1.66% at 10 mW/cm 2) is unexpectedly much higher than that employing poly(ethylene oxide) (PEO, M w=1,000,000 g/mol)/NaI/I 2 (0.07%), although the ionic conductivity of the former (2.1×10 -6 S/cm at room temperature) is not greatly different from that of the latter (1.6×10 -6 S/cm). The significantly improved solar cell performance is mostly attributed to (1) the easier penetration of PBA through TiO 2 nanoporous layer due to its lower molecular weight, and (2) the sticky property of PBA to allow a better adhesion with the electrodes.

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