Calcul de la variation de mobilité des électrons dans PbTe type n entre 50 et 300 K

Publisher Website
Google Scholar
Abstract
The mobility calculation, with an iterative method, in n type lead telluride is developed Results are presented in the temperature range 50-300 K where the mobility is mainly limited by diffusion by acoustical and optical phonons. The detailed form of the wave functions in the six-band model has been taken into account and also the variations, with temperature, of all the physical parameters necessary for the electronic distribution calculation under low electric field Only the acoustic déformation potential and the temperature coefficient of the conduction band edge effective mass which are not well known have been taken as adjustable parameters. The agreement between calculated and experimental mobility values is very good The calculations fit the detailed variations of mobility which are experimentally found in the temperature range 50-300 K and for electronic con- centrations varying from 1017 cm-3 to 1019 cm-3.