Rapid migration of defects in ion-implanted silicon

Autor: B. G. Svensson, S. Fatima, A. Hallén, J. Lalita, Niklas Keskitalo, P. Pellegrino, Chennupati Jagadish
Předmět:
Zdroj: Scopus-Elsevier
Popis: The temperature dependence of the so-called reverse dose rate effect for generation of vacancy-type defects in silicon has been investigated using samples implanted with 1.3 MeV protons at temperatures between 70 and 300 K. The effect is found to involve a thermally controlled process which exhibits an activation energy of ∼0.065 eV, possibly associated with rapid migration of Si self-interstitials (I). Further, using a concept of dual Si ion-implants long range migration of I:s at room temperature has been studied. Annihilation of vacancy-type defects at a depth of ∼3 μm is obtained by injection of I:s from a shallow implant with sufficiently high dose.
Databáze: OpenAIRE