Lattice thermal resistivity of III–V compound alloys

Lattice thermal resistivities of III–V compound alloys have been analyzed with a theoretical prediction based on a simplified model of the alloy-disorder scattering. The theoretical prediction shows a quite good agreement with the experimental data on various III–V ternary compounds. This model has also been applied to obtain the thermal resistivity of In1−x Gax Asy P1−y lattice-matched to InP for the composition range of 0≤y≤1.0. The result indicates that the thermal resistivity increases markedly with alloying and exhibits a maximum value of about 24 W−1 deg cm at an alloying composition of y≂0.75.