Study on sodium water glass-based anti-reflective film and its application in dye-sensitized solar cells
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In this paper, anti-reflective (AR) films are prepared from sodium water glass
with a simple dip-coating method. The effects of SiO2/Na2O molar ratio,
concentration of water glass, and withdrawal speed on the anti-reflection
performance of the AR films are systematically studied. The optimized AR
film is further applied in dye-sensitized solar cells (DSCs). The optical properties
and surface morphology of AR films are analyzed by ultraviolet-visible
spectrophotometer, scanning electron microscope, and atomic force microscope.
Transmittance of the glass coated with sodium water glass-based AR film is
increased by 3.2% when the SiO2/Na2O molar ratio, concentration, and
withdrawal speed equal to 3.8, 5 wt%, and 80 mm/min, respectively. Under this
condition, the thickness of the AR film is 127 nm and the AR film has obvious
porous structure. In addition, the power conversion efficiency of DSC coated by
AR film is increased from 7.92% to 8.24%, compared with the DSC without AR film.