Intense erbium-1.54-μm photoluminescence from 2 to 525 K in ion-implanted 4H, 6H, 15R, and 3C SiC

Abstract
We have observed intense line spectra in the neighborhood of 1.54 μm from erbium‐implanted samples of 4H, 6H, 15R, and 3C SiC. Samples were implanted to a fluence of about 1013erbium ions/cm2 using four implant energies. An anneal at 1700 °C in a SiC cavity was used. The temperature dependence of the integrated luminescence intensity from 1.49 to 1.64 μm varies very little from 2 to 400 K. No major differences are found for the spectra of the hexagonal and rhombohedral polytypes but there is a difference for cubic SiC (3C SiC).