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Full quantum simulation of Shockley–Read–Hall recombination in p-i-n and tunnel diodes

Abstract : We have included Shockley-Read-Hall (SRH) generation/recombination in Non-equilibrium Green's function (NEGF) calculations via a multiphonon relaxation model. The model has been used to study how the presence of defects affects the current-voltage characteristics of GaAs p-in diodes, and of an InGaAs tunnel diode. Regarding p-in diodes, we show that SRH generation/recombination is responsible for ideality factors approaching the theoretical value of two in the forward bias regime, while in reverse bias the recombination current density varies slowly with the applied voltage. In all the considered cases, the defects located in the center of the active region proved to be the most effective in allowing trap-assisted tunneling from the valence to the conduction band. Finally, the inclusion of SRH recombination in NEGF simulations of Esaki tunnel diodes permits to predict a realistic degradation of the peak-to-valley current ratio.
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https://hal-cnrs.archives-ouvertes.fr/hal-03818605
Contributor : Marco Pala Connect in order to contact the contributor
Submitted on : Tuesday, October 18, 2022 - 9:21:51 AM
Last modification on : Saturday, October 22, 2022 - 4:43:57 AM

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A. Pilotto, P. Dollfus, J. Saint-Martin, Marco G. Pala. Full quantum simulation of Shockley–Read–Hall recombination in p-i-n and tunnel diodes. Solid-State Electronics, 2022, 198, pp.108469. ⟨10.1016/j.sse.2022.108469⟩. ⟨hal-03818605⟩

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