Silica modification of titania nanoparticles for a dye-sensitized solar cell

作者: Naji Al Dahoudi , Junting Xi , Guozhong Cao

DOI: 10.1016/J.ELECTACTA.2011.10.017

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摘要: Abstract Nanocomposites of commercially available titanium oxide (TiO2) nanoparticles (P25) and a silane coupling agent, methacryloxypropyltrimethoxysilane (MPTS), were incorporated into homogeneous porous material after UV treatment heating at 450 °C in the air. A dye-sensitized solar cell utilizing this UV-polymerized MPTS-modified sample exhibited significant enhancements total performance when compared with an analogous prepared without MPTS. The photovoltaic enhancement was mainly achieved due to increase photocurrent density. This improvement is believed be caused by increased contact between small suspended homogeneous, multiporous structure, which turn would optimize paths for electron transport. larger surface area pore volume resulted dye uptake amount fast redox activity electrolyte, enhancing regeneration. Furthermore, measured diffuse reflectance indicated greater light scattering inside TiO2 structure.

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