On the temperature distributions around dislocations in III-V compounds due to Joule heating

The nonuniform rate of creation of Joule heat due to variations in the electrical conductivity around dislocations in III-V compounds gives rise to variations in the temperature around these dislocations. The general equations and boundary conditions for this temperature distribution are derived for any III-V compound. The specific temperature distributions around 60° and edge dislocations in n-type GaSb are calculated. It is found that the contribution of the dislocations to the temperature becomes significant within 500 Å from the core, while the gradient of temperature reaches significant values at even greater distances.