Initially, LEDs were used as an electronic component to emit light at a certain wavelength and a unique
color (red, green, blue, etc). The wavelength of emitted light depends on the deference between the
minimum energy of the conduction band and the maximum energy from the valence band. The LEDs light
intensity depends on the current passing through it in direct mode [1, 2]. Today, white LEDs (Figure 1-a)
appear in the field of photovoltaic lighting technology as a promising solution. In fact, they consume