# Semiconductors with low thermal conductivity (lattice matched to GaAs)

What are the semiconductors with lowest thermal conductivity that can be grown on GaAs with the least possible incorporated strain (i.e. lattice-matched or close to it)?

GaAs has thermal conductivity of about 45–55 W/(m.K)

One possibility is GaInP with ~50% Indium which has thermal conductivity of about 5 W/(m.K), ~10x lower than GaAs

Are there others with even lower thermal conductivity?