A thermodynamical consideration of a selective wavelength emitter for thermophotovoltaic energy generation is presented to express emitter emission properties through spectroscopic parameters of dopant atoms. It is found the heat-light conversion can produce nonequilibrium conditions in the emitter material due to radiative cooling of the atomic excited states. A possible influence of inter- and intra-atomic energy transitions to emitter parameters is discussed.
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Golovlev et al. (1996) studied this question.
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