Titanium oxide hollow structure layer for dye sensitized solar cell by liquid phase deposition
In this study, polystyrene (PS) microspheres templates having different coating densities were prepared by drop casting PS microspheres with the diameter of 800 nm on indium tin oxide (ITO) glass substrate. TiO 2 film was deposited on the PS microsphere template via liquid phase deposition (LPD) usi...
Saved in:
Published in | SN applied sciences Vol. 1; no. 10; p. 1306 |
---|---|
Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Cham
Springer International Publishing
01.10.2019
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | In this study, polystyrene (PS) microspheres templates having different coating densities were prepared by drop casting PS microspheres with the diameter of 800 nm on indium tin oxide (ITO) glass substrate. TiO
2
film was deposited on the PS microsphere template via liquid phase deposition (LPD) using a solution of ammonium hexafluoro-titanate [(NH
4
)
2
TiF
6
] and boric acid (H
3
BO
3
). A LPD-TiO
2
hollow layer was prepared by removing PS microspheres via high-temperature sintering; this hollow layer acts as a barrier between the ITO and electrolyte interface in the working electrode structure of a dye-sensitized solar cell (DSSC). Because hollow layer has a large specific surface area, it increases dye adsorption and acts as a barrier layer to inhibit direct contact between ITO and electrolyte interface. Thus, the charge recombination rate between ITO and electrolyte interface is reduced and the electron transmission efficiency between the ITO and the working electrode is improved. Hollow layer (0.1 wt% PS, 50 nm) in the DSSC exhibited the optimum short-circuit current density (J
sc
) of 12.75 mA/cm
2
, open-circuit voltage (V
oc
) of 0.71 V, fill factor of 62.19%, and photoelectric conversion efficiency (η) of 5.67%. |
---|---|
ISSN: | 2523-3963 2523-3971 |
DOI: | 10.1007/s42452-019-1331-5 |