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High field limitation of Poole-Frenkel emisson caused by tunneling

Ziemann, E. ; Ganichev, Sergey ; Prettl, Wilhelm ; Istratov, A. ; Weber, E.


Capture and emission of carriers by deep impurities is an important channel of non-radiative recombination limiting luminescence efficiency. The electric field dependence of the ionization probability of charged deep impurities in semiconductors is usually attributed to the Poole-Frenkel effect. Here we show that the characteristic electric field dependence of the Poole-Frenkel effect can only be ...


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