Two carrier temperatures non-equilibrium generalized Planck law for semiconductors
Résumé
Planck's law of radiation describes the light emitted by a blackbody. This law has been generalized in the past for the case of a non-blackbody material having a quasi Fermi-level splitting: the lattice of the material and the carriers are then considered in an isothermal regime. Hot carrier spectroscopy deals with carriers out of the isothermal regime, as their respective temperatures (≠) T T H e H h are considered to be different than that of the lattice () T L. Here we show that Fermi-Dirac distribution temperature for each type of carrier still determine an effective radiation temperature: an explicit relationship is given involving the effective masses. Moreover, we show how to determine, in principle with an additional approximation, the carrier temperatures () T T , H e H h and the corresponding absolute electrochemical potentials from photoluminescence measurements.
Domaines
Physique [physics]Origine | Publication financée par une institution |
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