الخلاصة
In this study the luminescent solar concentrators (LSC) plates doped with fluorescein-sodium
dye laser have been prepared in the laboratory at room temperature with(0.5mm) thickness .The
concentration of the fluorescein-sodium dye laser were( 10-5,10-4) mol/L. Then they compared
with pure epoxy panel. The optical characteristics have been studied like (absorption,
transmittance, reflectance and energy gap) also the optical constant were calculated including
(absorption. coefficient, refraction index and extinction coefficient ) for all panels.
The effect of increasing concentration leads to shift the absorbance, absorption coefficient and
extinction coefficient towards higher wavelength, their values also increase with increasing the
concentrations. With regard to transmission ,reflectance and refractive index the concentration
effect also leads to the same displacement, but their values decrease with increasing the
concentration.
The results also shown that the value of the energy gap is decreased from (3.6eV) for epoxy
resin to (2.3,2.25)eV for the both concentrated panels. |