GaInAsSbP layers can be grown by heteroepitaxy on indium arsenide, gallium antimonide and other materials. The exact composition can be tuned in order to make it lattice matched. The presence of five elements in the alloy allows extra degrees of freedom, making it possible to fix the lattice constant while varying the bandgap. E.g. Ga0.92In0.08P0.05As0.08Sb0.87 is lattice matched to InAs.[2]
^Room temperature midinfrared electroluminescence from GaInAsSbP light emitting diodes, A. Krier, V. M. Smirnov, P. J. Batty, V. I. Vasil’ev, G. S. Gagis, and V. I. Kuchinskii, Appl. Phys. Lett. vol. 90 pp. 211115 (2007) doi:10.1063/1.2741147
^ abLattice-matched GaInPAsSb/InAs structures for devices of infrared optoelectronics, M. Aidaraliev, N. V. Zotova, S. A. Karandashev, B. A. Matveev, M. A. Remennyi, N. M. Stus’, G. N. Talalakin, V. V. Shustov, V. V. Kuznetsov and E. A. Kognovitskaya, Semiconductors vol. 36 num. 8 pp. 944-949 (2002) doi:10.1134/1.1500478
^Low Bandgap GaInAsSbP Pentanary Thermophotovoltaic Diodes, K. J. Cheetham, P. J. Carrington, N. B. Cook and A. Krier, Solar Energy Materials and Solar Cells, vol. 95 pp. 534-537 (2011) doi:10.1016/j.solmat.2010.08.036