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Why Highly Crystallized One-dimensional TiO2 Nanoscale Materials are Needed for Fabricating Highly Efficient Dye-sensitized Solar Cells?

Motonari AdachiFumio Uchida

Fuji Chemical Co.,Ltd.

摘要:One-dimensional titania nanoscale materials(IDTNM) have been investigated for attainment of highly efficient solar cells.It is important to make clear the reason for necessity of IDTNM for attainment of higher efficient dye-sensitized solar cells(DSSCs) through theoretical consideration and its verification based on the experimental evidences.In this work first we present that DSSCs with electrodes composed of three kinds of highly crystalline IDTNM synthesized in our laboratory,i.e.,single crystal-like network structure of titania nanowires(TNWs),titania nanorods(TNRs)and titania nanochains(TNCs),showed high light-to-electricity conversion efficiency around 9%.Next,necessity of highly crystalline IDTNM for fabricating highly efficient DSSCs is deduced based on the theoretical consideration of electron transport processes derived from Nyquist plots obtained by electrochemical impedance spectroscopy(EIS) andⅠ-Ⅴ measurement.We verify then the consideration by an intentional experiment,measuring the electron transport properties by EIS on the cells with electrodes made of single crystal-like TNWs,a representative of highly crystalline IDTNM,and P-25 with various TNW contents.
会议名称:

2016年第五届国际新材料大会

会议时间:

2016-06-06

会议地点:

中国重庆

  • 专辑:

    工程科技Ⅰ辑; 工程科技Ⅱ辑

  • 专题:

    材料科学; 电力工业

  • 分类号:

    TB383.1;TM914.4

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