TY - JOUR
T1 - Influence of titania dispersivity on the conversion efficiency of dye-sensitized solar cells
AU - Yamamoto, Yasuhiro
AU - Aoyama, Yukihiro
AU - Shimizu, Sumiyo
AU - Kano, Junya
AU - Saito, Fumio
AU - Ito, Seigo
PY - 2011
Y1 - 2011
N2 - Titania powder (P25) was dispersed by bead-milling breakdown method, and the dispersivity of TiO2 was controlled by adjusting the mean secondary TiO2 particle size to 45, 56, and 75nm by changing the dispersion solvent blend ratio of ethanol and terpineol. The transparency of the coated layer increased when the particle size of TiO2 aggregates became smaller than 100nm. Although the transparency was significantly different according to differences in the size of nanocrystallyne-TiO2 aggregates, the resulting photovoltaic (PV) effect of a dye-sensitized solar cell (DSSC) was not significantly different between the different aggregate sizes. A double layer structure (transparent TiO2 layer/opaque TiO2 layer) was adopted to improve the PV effect, which resulted in an improvement of the photocurrent and conversion efficiency of 13.2 and 11.1, respectively, from that for the DSSCs with single-layered TiO2 electrodes.
AB - Titania powder (P25) was dispersed by bead-milling breakdown method, and the dispersivity of TiO2 was controlled by adjusting the mean secondary TiO2 particle size to 45, 56, and 75nm by changing the dispersion solvent blend ratio of ethanol and terpineol. The transparency of the coated layer increased when the particle size of TiO2 aggregates became smaller than 100nm. Although the transparency was significantly different according to differences in the size of nanocrystallyne-TiO2 aggregates, the resulting photovoltaic (PV) effect of a dye-sensitized solar cell (DSSC) was not significantly different between the different aggregate sizes. A double layer structure (transparent TiO2 layer/opaque TiO2 layer) was adopted to improve the PV effect, which resulted in an improvement of the photocurrent and conversion efficiency of 13.2 and 11.1, respectively, from that for the DSSCs with single-layered TiO2 electrodes.
UR - http://www.scopus.com/inward/record.url?scp=84855614068&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84855614068&partnerID=8YFLogxK
U2 - 10.1155/2011/234931
DO - 10.1155/2011/234931
M3 - Article
AN - SCOPUS:84855614068
SN - 1110-662X
VL - 2011
JO - International Journal of Photoenergy
JF - International Journal of Photoenergy
M1 - 234931
ER -
