Enhancement of TIO2 Interconnection Using Sol - Gel Processed Nanoglue for Plastic Dye-sensitized Solar Cells
- Enhancement of TIO2 Interconnection Using Sol - Gel Processed Nanoglue for Plastic Dye-sensitized Solar Cells
- 리위롱; 이도권; 김경곤; 박남규; 고민재
- Dye-sensitized solar cells; Plastic; sol-gel; nanoglue
- Issue Date
- 2009 MRS fall meeting
- , 243-243
- The formation of well-necked TiO2 electrode at low temperature is critical for plastic dye-sensitized
solar cells (DSSCs). However, low temperature process cannot provide good interparticle connection as
conventional high temperature process does. Therefore, enhancement of interconnection at low
temperature is required for high efficiency plastic DSSCs.
A TiO2 colloidal sol as a "glue" agent was developed by hydrolysis and polycondensation of titanium
alkoxides to enhance interconnection. The crystalline phase of this TiO2 glue is pure anatase with
average particles size of less than 10 nm, which was characterized by powder X-ray diffraction (XRD)
and high revolution transmission electron microscopy (HRTEM). The viscous alcoholic paste without
organic binder was prepared with commercial P25 powder and this TiO2 glue. The photovoltaic
performance was optimized with variation of paste composition and process parameters. The
conversion efficiency of 5.8% and 4.3% were achieved on FTO/glass and ITO/PEN substrate,
respectively. Further improvement of cell performance with this TiO2 glue system is in progress.
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