What is GaAs

What is GaAs? GaAs(Gallium arsenide) is a compound semiconductor material,a mixture of two elements, gallium (Ga) and arsenic (As). The uses of Gallium arsenide are varied and include being used inLED/LD, field-effect transistors (FETs), and integrated... More

What is GaAs? GaAs(Gallium arsenide) is a compound semiconductor material,a mixture of two elements, gallium (Ga) and arsenic (As). The uses of Gallium arsenide are varied and include being used inLED/LD, field-effect transistors (FETs), and integrated circuits (ICs). GaAs Basic Parameters at 300K Crystal structure Zinc Blende Group of symmetry Td 2 -F43m Number of atoms in 1 cm3 4.42·1022 de Broglie electron wavelength 240 A Debye temperature 360 K Density 5.32 g cm-3 Dielectric constant (static ) 12.9 Dielectric constant (high frequency) 10.89 Effective electron mass me 0.063mo Effective hole masses mh 0.51mo Effective hole masses mlp 0.082mo Electron affinity 4.07 eV Lattice constant 5.65325 A Optical phonon energy 0.035 eV GaAs Electrical Parameters Breakdown field ≈4·105 V/cm Mobility electrons ≤8500 cm2 V-1 s-1 Mobility holes ≤400 cm2 V-1 s-1 Diffusion coefficient electrons ≤200 cm2 /s Diffusion coefficient holes ≤10 cm2 /s Electron thermal velocity 4.4·105 m/s Less