TY - JOUR
T1 - On the photophysical and electrochemical studies of dye-sensitized solar cells with the new dye CYC-B1
AU - Chen, Jian Ging
AU - Chen, Chia Yuan
AU - Wu, Shi Jhang
AU - Li, Jheng Ying
AU - Wu, Chun Guey
AU - Ho, Kuo Chuan
N1 - Funding Information:
This work was financially supported by the National Research Council of Taiwan, the Republic of China. This work was also partially supported by the Academia Sinica, Taipei, Taiwan, the Republic of China.
PY - 2008/12
Y1 - 2008/12
N2 - In this study, the photoelectrochemical characteristics of a ruthenium photosensitizer with an alkyl bithiophene group, designated as CYC-B1, are studied. The effect of mesoporous TiO2 film thickness on the photovoltaic performance of CYC-B1 and N3 dye-sensitized solar cells was investigated. The performance of the dye-sensitized nanocrystalline TiO 2 solar cells (DSSC) fabricated using CYC-B1 dye-anchored TiO 2 photoelectrode showed a convincing enhancement in cell efficiency when the TiO2 film thickness was increased from 3 μm (eff. = 5.41%) to 6 μm (eff. = 7.1935). The efficiency of the CYC-B1 -sensitized DSSC was maximum at 6 μm of the TiO2 film thickness, reached its limiting value and remained constant up to 53 μm, although a similar trend was also observed for N3 dye-sensitized DSSC, however, the maximum efficiency achieved was only at 27 μm thickness (eff. = 6.75%). As expected, the photocurrent density generated in the DSSC modified by CYC-B1 dye is larger than that from N3 dye. The effect of guanidinium thiocyanate (GuSCN) (additive) addition to the electrolyte on the photovoltaic performance of DSSCs based on CYC-B1 was also investigated. Furthermore, the electrochemical impedance spectroscopy (EIS) technique and photo-transient laser method have been employed to analyze the charge transfer resistances (Rct) and the lifetime of the injected electrons on the TiO2 containing different thicknesses.
AB - In this study, the photoelectrochemical characteristics of a ruthenium photosensitizer with an alkyl bithiophene group, designated as CYC-B1, are studied. The effect of mesoporous TiO2 film thickness on the photovoltaic performance of CYC-B1 and N3 dye-sensitized solar cells was investigated. The performance of the dye-sensitized nanocrystalline TiO 2 solar cells (DSSC) fabricated using CYC-B1 dye-anchored TiO 2 photoelectrode showed a convincing enhancement in cell efficiency when the TiO2 film thickness was increased from 3 μm (eff. = 5.41%) to 6 μm (eff. = 7.1935). The efficiency of the CYC-B1 -sensitized DSSC was maximum at 6 μm of the TiO2 film thickness, reached its limiting value and remained constant up to 53 μm, although a similar trend was also observed for N3 dye-sensitized DSSC, however, the maximum efficiency achieved was only at 27 μm thickness (eff. = 6.75%). As expected, the photocurrent density generated in the DSSC modified by CYC-B1 dye is larger than that from N3 dye. The effect of guanidinium thiocyanate (GuSCN) (additive) addition to the electrolyte on the photovoltaic performance of DSSCs based on CYC-B1 was also investigated. Furthermore, the electrochemical impedance spectroscopy (EIS) technique and photo-transient laser method have been employed to analyze the charge transfer resistances (Rct) and the lifetime of the injected electrons on the TiO2 containing different thicknesses.
KW - Dye-sensitized solar cells
KW - Nanocrystallined TiO
KW - Ruthenium photosensitizer
UR - http://www.scopus.com/inward/record.url?scp=55349086153&partnerID=8YFLogxK
U2 - 10.1016/j.solmat.2008.08.005
DO - 10.1016/j.solmat.2008.08.005
M3 - 期刊論文
AN - SCOPUS:55349086153
SN - 0927-0248
VL - 92
SP - 1723
EP - 1727
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
IS - 12
ER -