A set of three thin films transmitting in the red, green and blue wavelengths have been demonstrated by the
MOCVD aerosol technology. These thin films were elaborated with different organometallic precursors and
deposited on glass or fused silica at different temperatures in the range of 350°C-550°C.The physicochemical
characteristics enable us to observe the phases responsible for the color.
The red one filter consists of a thin film of hematite-Fe2O3 with a transmittance peak of 75% at 630 nm. The
green thin film is composed of Cobalt doped ZnO with a transmittance peak of 56% at 540nm. The blue thin film
is composed of Cobalt doped Al2O3 with a transmittance peak of 65% at 450nm. Moreover, the absorbance
spectra properties are discussed related to the physicochemical characteristics of the deposited films.
Then, thanks to the best triplet we can evaluate the color reconstruction. Using a set of spectral files, a "color
toolbox" software optimizes by the method of least squares the 3 by 3 color matrix, the white balance and the
offset.
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