Abstract
We have fabricated efficient and stable full-plastic dye-sensitized solar cells (DSCs) based on nanocomposite gel electrolytes. Different compositions of binder-free nanocrystalline TiO2 pastes combined with mechanical compression technique were employed to prepare TiO2 photoanodes on indium-doped tin oxide coated polyethylene naphthalate. The performance and durability of plastic-based DSCs using nanocomposite gel electrolytes which contain ceramic nanoparticles in 3-methoxypropionitrile (MPN)-based or binary ionic liquid electrolytes were investigated. The results show that the compressed photoelectrode composed of commercial titanium powders P25 and 100nm TiO2 powders in conjunction with a TiO2 solidified MPN-based nanocomposite gel electrolyte achieved an energy conversion efficiency of 6.49%. Moreover, the DSCs based on TiO2 solidified bi-IL electrolyte were found to provide better durability than MPN-based nanocomposite gel electrolyte, whereas the efficiency maintained >97% of its original efficiency after 500h of aging test under continuous light irradiation (100mWcm−2) at 60°C.
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