In0.72Ga0.28As1

In₀.₇₂Ga₀.₂₈As is a III-V compound semiconductor alloy formed by combining indium arsenide and gallium arsenide in a specific composition ratio, tuned to achieve a direct bandgap in the near-infrared region around 0.75 µm wavelength. This material is used primarily in optoelectronic devices—particularly high-speed photodetectors, laser diodes, and integrated photonic circuits—where its lattice-matched or near-lattice-matched properties on InP substrates enable efficient quantum-well heterostructures. Engineers select this alloy when demanding both high quantum efficiency in the near-IR and thermal stability, making it particularly valuable for fiber-optic communications and scientific instrumentation where competing InGaAs compositions may not provide the optimal bandgap or lattice match.