Enhanced performance of I2-free solid-state dye-sensitized solar cells with conductive polymer up to 6.8%

Jeonghun Kim, Jong Kwan Koh, Byeonggwan Kim, Sung Hoon Ahn, Hyungju Ahn, Du Yeol Ryu, Jong Hak Kim, Eunkyoung Kim

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

An iodine-free solid-state dye-sensitized solar cell (ssDSSC) is reported here, with 6.8% energy conversion efficiency-one of the highest yet reported for N719 dye-as a result of enhanced light harvesting from the increased transmittance of an organized mesoporous TiO2 interfacial layer and the good hole conductivity of the solid-state-polymerized material. The organized mesoporous TiO2 (OM-TiO2) interfacial layer is prepared on large-area substrates by a sol-gel process, and is confirmed by scanning electron microscopy (SEM) and grazing incidence small-angle X-ray scattering (GISAXS). A 550-nm-thick OM-TiO2 film coated on fluorine-doped tin oxide (FTO) glass is highly transparent, resulting in transmittance increases of 8 and 4% compared to those of the bare FTO and conventional compact TiO2 film on FTO, respectively. The high cell performance is achieved through careful control of the electrode/hole transport material (HTM) and nanocrystalline TiO2/conductive glass interfaces, which affect the interfacial resistance of the cell. Furthermore, the transparent OM-TiO2 film, with its high porosity and good connectivity, exhibits improved cell performance due to increased transmittance in the visible light region, decreased interfacial resistance (Î

Original languageEnglish
Pages (from-to)4633-4639
Number of pages7
JournalAdvanced Functional Materials
Volume21
Issue number24
DOIs
Publication statusPublished - 2011 Dec 20

Fingerprint

Fluorine
Tin oxides
tin oxides
fluorine
transmittance
Polymers
solar cells
dyes
solid state
polymers
cells
Glass
glass
energy conversion efficiency
sol-gel processes
Iodine
X ray scattering
grazing incidence
Energy conversion
Sol-gel process

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Condensed Matter Physics
  • Electrochemistry

Cite this

Kim, Jeonghun ; Koh, Jong Kwan ; Kim, Byeonggwan ; Ahn, Sung Hoon ; Ahn, Hyungju ; Ryu, Du Yeol ; Kim, Jong Hak ; Kim, Eunkyoung. / Enhanced performance of I2-free solid-state dye-sensitized solar cells with conductive polymer up to 6.8%. In: Advanced Functional Materials. 2011 ; Vol. 21, No. 24. pp. 4633-4639.
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abstract = "An iodine-free solid-state dye-sensitized solar cell (ssDSSC) is reported here, with 6.8{\%} energy conversion efficiency-one of the highest yet reported for N719 dye-as a result of enhanced light harvesting from the increased transmittance of an organized mesoporous TiO2 interfacial layer and the good hole conductivity of the solid-state-polymerized material. The organized mesoporous TiO2 (OM-TiO2) interfacial layer is prepared on large-area substrates by a sol-gel process, and is confirmed by scanning electron microscopy (SEM) and grazing incidence small-angle X-ray scattering (GISAXS). A 550-nm-thick OM-TiO2 film coated on fluorine-doped tin oxide (FTO) glass is highly transparent, resulting in transmittance increases of 8 and 4{\%} compared to those of the bare FTO and conventional compact TiO2 film on FTO, respectively. The high cell performance is achieved through careful control of the electrode/hole transport material (HTM) and nanocrystalline TiO2/conductive glass interfaces, which affect the interfacial resistance of the cell. Furthermore, the transparent OM-TiO2 film, with its high porosity and good connectivity, exhibits improved cell performance due to increased transmittance in the visible light region, decreased interfacial resistance ({\^I}",
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Enhanced performance of I2-free solid-state dye-sensitized solar cells with conductive polymer up to 6.8%. / Kim, Jeonghun; Koh, Jong Kwan; Kim, Byeonggwan; Ahn, Sung Hoon; Ahn, Hyungju; Ryu, Du Yeol; Kim, Jong Hak; Kim, Eunkyoung.

In: Advanced Functional Materials, Vol. 21, No. 24, 20.12.2011, p. 4633-4639.

Research output: Contribution to journalArticle

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T1 - Enhanced performance of I2-free solid-state dye-sensitized solar cells with conductive polymer up to 6.8%

AU - Kim, Jeonghun

AU - Koh, Jong Kwan

AU - Kim, Byeonggwan

AU - Ahn, Sung Hoon

AU - Ahn, Hyungju

AU - Ryu, Du Yeol

AU - Kim, Jong Hak

AU - Kim, Eunkyoung

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N2 - An iodine-free solid-state dye-sensitized solar cell (ssDSSC) is reported here, with 6.8% energy conversion efficiency-one of the highest yet reported for N719 dye-as a result of enhanced light harvesting from the increased transmittance of an organized mesoporous TiO2 interfacial layer and the good hole conductivity of the solid-state-polymerized material. The organized mesoporous TiO2 (OM-TiO2) interfacial layer is prepared on large-area substrates by a sol-gel process, and is confirmed by scanning electron microscopy (SEM) and grazing incidence small-angle X-ray scattering (GISAXS). A 550-nm-thick OM-TiO2 film coated on fluorine-doped tin oxide (FTO) glass is highly transparent, resulting in transmittance increases of 8 and 4% compared to those of the bare FTO and conventional compact TiO2 film on FTO, respectively. The high cell performance is achieved through careful control of the electrode/hole transport material (HTM) and nanocrystalline TiO2/conductive glass interfaces, which affect the interfacial resistance of the cell. Furthermore, the transparent OM-TiO2 film, with its high porosity and good connectivity, exhibits improved cell performance due to increased transmittance in the visible light region, decreased interfacial resistance (Î

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