TY - JOUR
T1 - BaTiO3-coated TiO2 working electrodes for use in dye-sensitised solar cells
AU - Menzies, D.
AU - Cervini, R.
AU - Dai, Q.
AU - Lewis, M.
AU - Brack, N.
AU - Cheng, Yi Bing
AU - Simon, G. P.
AU - Spiccia, L.
PY - 2005/12/1
Y1 - 2005/12/1
N2 - Nanostructured TiO2 working electrodes were coated with thin films of BaTiO3 using the sol-gel technique. These core-shell electrodes were made and compared against the control samples (bare TiO2). The electrodes were characterized using scanning electron microscopy (SEM), energy dispersive X-ray Spectroscopy (EDX), powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy and used in the construction of dye-sensitised solar cells (DSSCs). It was found that all the BaTiO3-coated samples resulted in an increase in the open circuit voltage (Voc) from 735mV to 818mV. However, the short circuit current (Jsc) was lower than the control samples with a decrease from 5.6mAcm-2 to 4.3mAcm-2. The combination of these changes resulted in a decrease in efficiency from 2.6% to 2.3%. However, when a 2.45GHz microwave heat treatment was used instead of the conventional heat treatment the efficiency rose back up to 2.5%. This increase was due to a further increase in the Voc up to 823mV but still a lower current.
AB - Nanostructured TiO2 working electrodes were coated with thin films of BaTiO3 using the sol-gel technique. These core-shell electrodes were made and compared against the control samples (bare TiO2). The electrodes were characterized using scanning electron microscopy (SEM), energy dispersive X-ray Spectroscopy (EDX), powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy and used in the construction of dye-sensitised solar cells (DSSCs). It was found that all the BaTiO3-coated samples resulted in an increase in the open circuit voltage (Voc) from 735mV to 818mV. However, the short circuit current (Jsc) was lower than the control samples with a decrease from 5.6mAcm-2 to 4.3mAcm-2. The combination of these changes resulted in a decrease in efficiency from 2.6% to 2.3%. However, when a 2.45GHz microwave heat treatment was used instead of the conventional heat treatment the efficiency rose back up to 2.5%. This increase was due to a further increase in the Voc up to 823mV but still a lower current.
KW - Barium titanate
KW - Core-shell nanostructure
KW - Dye-sensitised solar cells
KW - Electrode post-treatment
KW - TiO working electrodes
UR - http://www.scopus.com/inward/record.url?scp=33645634392&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:33645634392
SN - 1018-6689
VL - 41
SP - 43
EP - 47
JO - Australasian Ceramic Society Journal
JF - Australasian Ceramic Society Journal
IS - 2
ER -