Figure 9: Waveguide transmittance and normalized absorbance of chlorophylls a and b in diethyl ether. Waveguides of both devices primarily concentrate wavelengths between 500 and 600 nm and transmit the majority of the light absorbed by the two primary plant pigments. The optimized thin-film LSC transmits more light due to its lower optical density. Absorbance measurements were taken from Lichtenthaler [47].