We have demonstrated a new class of material which appear to provide significant advantages as TPV emitters, including selective emission, high power density by virtue of operation at very high temperature, stability in air, appreciable thermal shock resistance, and the ability to be produced in desired shapes. These materials also afford the possibility of tuning the characteristic emission wavelength to various bands as may be desired, and the possibility of being powered by any one of a variety of power sources, including gas flames and concentrated solar energy. ©1996 American Institute of Physics.