A compound semiconductor is a type of semiconductor material formed by combining two or more elements from different groups of the periodic table, typically from groups III–V or II–VI. Unlike elemental semiconductors such as silicon, these materials are engineered to achieve specific electrical and optical properties, making them valuable in a wide range of electronic and optoelectronic applications.
One of the defining characteristics of a compound semiconductor is its direct bandgap in many cases, which allows it to efficiently emit and absorb light. This property makes such materials particularly suitable for devices like light-emitting diodes (LEDs), laser diodes, and photodetectors. Common examples include gallium arsenide (GaAs), indium phosphide (InP), and cadmium telluride (CdTe), each offering distinct performance advantages depending on the application.
The ability to tailor material properties is a major advantage of a compound semiconductor. By adjusting the composition of elements, manufacturers can control parameters such as bandgap energy, electron mobility,…
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