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 language | English |
|---|---|
| Pages (from-to) | 4633-4639 |
| Number of pages | 7 |
| Journal | Advanced Functional Materials |
| Volume | 21 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - 2011 Dec 20 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Biomaterials
- Condensed Matter Physics
- Electrochemistry
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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 journal › Article
TY - JOUR
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
PY - 2011/12/20
Y1 - 2011/12/20
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
AB - 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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U2 - 10.1002/adfm.201101520
DO - 10.1002/adfm.201101520
M3 - Article
AN - SCOPUS:83655165223
VL - 21
SP - 4633
EP - 4639
JO - Advanced Functional Materials
JF - Advanced Functional Materials
SN - 1616-301X
IS - 24
ER -