LEDs fabricated from Ga As emit radiation in the visible range.


LEDs, or light-emitting diodes, are semiconductor devices that emit light when an electric current is passed through them. The specific wavelength of light emitted by an LED depends on the materials used to fabricate it. In the case of LEDs fabricated from Ga As, which stands for Gallium Arsenide, the emitted radiation falls within the visible range.

Gallium Arsenide (Ga As):
Gallium Arsenide is a compound semiconductor made up of the elements gallium (Ga) and arsenic (As). It has several advantageous properties that make it suitable for use in LEDs, such as its direct bandgap and high electron mobility.

Visible Range:
The visible range of the electromagnetic spectrum is the portion that can be detected by the human eye. It spans wavelengths from approximately 400 to 700 nanometers (nm), corresponding to the colors violet, blue, green, yellow, orange, and red.

LED Emission:
When an electric current is applied to an LED fabricated from Ga As, the movement of electrons within the semiconductor material causes them to release energy in the form of photons, or light particles. The energy of these photons determines their wavelength, and thus the color of the emitted light.

Ga As LED Emission:
LEDs fabricated from Ga As have a bandgap energy that corresponds to the emission of photons in the visible range. This means that when electrons in the Ga As material transition from the conduction band to the valence band, they release photons with energies that fall within the visible spectrum. The specific wavelength of the emitted light can be tuned by adjusting the composition or doping of the Ga As material.

Conclusion:
In conclusion, LEDs fabricated from Ga As emit radiation in the visible range. The materials and properties of Ga As allow for the emission of photons with energies corresponding to the visible spectrum, enabling the production of LEDs that emit different colors of light.