Comparison of the Optical Characteristics of Titania Porous Thin Films for Dye-Sensitized Solar Cells that Changes the Molecular Weight of Polyethylene Glycol

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  • ポリエチレングリコールの分子量を変化させたチタニア多孔質薄膜の光学的特性比較
  • ポリエチレングリコール ノ ブンシリョウ オ ヘンカ サセタ チタニア タコウシツ ハクマク ノ コウガクテキ トクセイ ヒカク

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Abstract

Dye-sensitized solar cells (DSCs) are expected to be used for future clean energy. In general, when the titania porous electrode in DSCs is made, a polyethylene glycol (PEG) is added to obtain the porous structure. Although we had reported that the conversion efficiency of DSC became high when the high molecular weight of PEG was used, its reason was not clear. In the present study, the photoluminescence spectrum of titania films with the different molecular weight of PEG was measured at room temperature, and was discussed the relation between molecular weight and the conversion efficiency of DSC.

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