Efficiency Improvement of Dye-Sensitized Solar Cell by Light Confined Effect

Author

Arakawa, Hironori ; Yamaguchi, Takeshi ; Takeuchi, Akihito ; Agatsuma, Shinya

Author_Institution

Dept. of Ind. Chem., Tokyo Univ. of Sci.

Volume

1

fYear

2006

fDate

38838

Firstpage

36

Lastpage

39

Abstract

Efficiency improvement of dye-sensitized solar cell was conducted in terms of increasing light harvest efficiency of dye-coated TiO₂ photoelectrode. To increase light harvest efficiency, light confined effect by light scattering TiO₂ particles was applied. TiO₂ pastes for photoelectrode were composed of mixture of TiO₂ particles of 20-23nm, 50nm and 100 nm in average diameter with different ratios. TiO₂ particles of 50nm and 100nm were mainly used for light scattering for incident light. By utilizing the four-layered TiO₂ photoelectrode prepared from four different pastes, solar energy conversion efficiency improved up to 10.3% and 10.5% in N719 dye and Black dye cell with 5mmtimes5mm, respectively, under AM1.5, 100mW/cm². Then, influence of cell size and cell shape on efficiency was studied in size from 5mmtimes5mm up to 10cmtimes10cm size. A good efficiency of 8.4% was obtained by a silver-grid current-collecting 10cmtimes10cm-size Black dye-sensitized TiO₂ solar cell

Keywords

dyes; electrochemical electrodes; light scattering; photovoltaic effects; semiconductor materials; solar cells; titanium compounds; Black dye-sensitized solar cell; N719 dye; TiO₂; dye-coated photoelectrode; light confined effect; light harvest efficiency; light scattering; photovoltaics; solar energy conversion efficiency; Abstracts; Calcination; Chemistry; Electrons; Glass; Light scattering; Photovoltaic cells; Powders; Solar energy; Titanium;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Energy Conversion, Conference Record of the 2006 IEEE 4th World Conference on

Conference_Location

Waikoloa, HI

Print_ISBN

1-4244-0017-1

Electronic_ISBN

1-4244-0017-1

Type

conf

DOI

10.1109/WCPEC.2006.279340

Filename

4059555