Addendum: 'Three-Dimensional Photonic-Crystal Emitter For Thermal Photovoltaic Power Generation' [Appl. Phys. Lett. 83, 380 (2003)]

摘要

In our previous paper, emission power from an electrically heated photonic-lattice at a given average sample temperature, was compared to that of a blackbody at that same temperature. In this comparison, we measured a lattice emission higher than that of a blackbody. There are questions regarding whether or not this experimental observation is theoretically possible, and if the temperature of the system was sufficiently well known to make this conclusion. In subsequent experiments, based on those performed in Ref. 1 we have determined that the temperature gradient across the sample was more significant than initially thought. In these subsequent experiments, we see no experimentally significant emission in excess of Planck's law.