TY - JOUR
T1 - Preparation of dye sensitized solar cell by using supercritical carbon dioxide drying
AU - Iwai, Yoshio
AU - Nakashima, Takuto
AU - Yonezawa, Setsuko
N1 - Funding Information:
The authors gratefully acknowledge the financial support for female researchers in Faculty of Engineering, Kyushu University . The measurement of XRD pattern was made using SmartLab (Rigaku) at the Center of Advanced Instrumental Analysis, Kyushu University.
Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - Dye-sensitized solar cells (DSSC) derived from TiO2 aerogel film electrodes were fabricated. TiO2 aerogels were obtained by using sol-gel method and supercritical carbon dioxide (sc-CO2) drying. First, TiO2 wet gels were obtained by sol-gel method. Then, the solvents in the TiO2 wet gels were replaced by acetone. The TiO 2 aerogels were obtained by using sc-CO2 drying from the TiO2 wet gels. The conditions of sc-CO2 drying were at 313, 323 K and 7.8-15.5 MPa. The electrodes with TiO2 aerogel films were obtained by deposition of the aerogels on glass substrates. The electrodes with TiO2 aerogel films and a commercial particle film of various thickness were obtained by repetitive coatings and calcinations. The amount of dye adsorbed on the TiO2 films with sc-CO2 drying was higher than that of commercial particle film. The amount of dye adsorbed on the TiO2 films increased with increasing surface area of the TiO 2 film. DSSCs were assembled by using the TiO2 aerogel film electrodes and their current-voltage performance was measured. The power performance of DSSC made by supercritical drying was higher than that of commercial particles. The DSSC with the film electrode made at 313 K and 15.5 MPa showed the best power performance (Jsc = 7.30 mA/cm2, Voc = 772 mV, η = 3.28%).
AB - Dye-sensitized solar cells (DSSC) derived from TiO2 aerogel film electrodes were fabricated. TiO2 aerogels were obtained by using sol-gel method and supercritical carbon dioxide (sc-CO2) drying. First, TiO2 wet gels were obtained by sol-gel method. Then, the solvents in the TiO2 wet gels were replaced by acetone. The TiO 2 aerogels were obtained by using sc-CO2 drying from the TiO2 wet gels. The conditions of sc-CO2 drying were at 313, 323 K and 7.8-15.5 MPa. The electrodes with TiO2 aerogel films were obtained by deposition of the aerogels on glass substrates. The electrodes with TiO2 aerogel films and a commercial particle film of various thickness were obtained by repetitive coatings and calcinations. The amount of dye adsorbed on the TiO2 films with sc-CO2 drying was higher than that of commercial particle film. The amount of dye adsorbed on the TiO2 films increased with increasing surface area of the TiO 2 film. DSSCs were assembled by using the TiO2 aerogel film electrodes and their current-voltage performance was measured. The power performance of DSSC made by supercritical drying was higher than that of commercial particles. The DSSC with the film electrode made at 313 K and 15.5 MPa showed the best power performance (Jsc = 7.30 mA/cm2, Voc = 772 mV, η = 3.28%).
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U2 - 10.1016/j.supflu.2013.03.010
DO - 10.1016/j.supflu.2013.03.010
M3 - Article
AN - SCOPUS:84876120549
VL - 77
SP - 153
EP - 157
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
SN - 0896-8446
ER -