Experiments to describe the band structure of bulk (solid) materials??? I just want to know the name of some of the most used techniques to describe or obtain information of how the band structure of the material is. Not by theorethical calculations, just experiments. For example, let say I construct the following experiment. I put my sample on a heater and I put a fiber optic or a detector/photomultiplier to detect the photons that the material emits. Let say I have a good equipment that can diferentiate the photons by their energies, or wavelenghts. So in the end, by substracting the noise, the absence and the continuity of photon energy can tell me some information on how is the band structure of certain material. Right or wrong? If this technique already exist, how is it called?