On method of estimating recombination rates by analysis of time-resolved luminescence

Sakowski, Konrad; Borowik, Łukasz; Rochat, Névine; Kempisty, Pawel; Strak, Pawel; Majewska, Natalia; Mahlik, Sebastian; Koroński, Kamil; Sochacki, Tomasz; Piechota, Jacek; Fouchier, Marc; Kaminska, Agata; Krukowski, Stanislaw

doi:10.1016/j.jlumin.2024.120473

Journal of Luminescence

2024

DOI: 10.1016/j.jlumin.2024.120473

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On method of estimating recombination rates by analysis of time-resolved luminescence

Konrad Sakowski,

Łukasz Borowik,

Névine Rochat

et al.

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2024

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Coulomb Contribution to Shockley–Read–Hall Recombination

Sakowski,

Strak,

Kempisty

et al. 2024

Materials

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A nonradiative recombination channel is proposed, which does not vanish at low temperatures. Defect-mediated nonradiative recombination, known as Shockley–Read–Hall (SRH) recombination, is reformulated to accommodate Coulomb attraction between the charged deep defect and the approaching free carrier. It is demonstrated that this effect may cause a considerable increase in the carrier velocity approaching the recombination center. The effect considerably increases the carrier capture rates. It is demonstrated that, in a typical semiconductor device or semiconductor medium, the SRH recombination rate at low temperatures is much higher and cannot be neglected. This effect renders invalid the standard procedure of estimating the radiative recombination rate by measuring the light output in cryogenic temperatures, as a significant nonradiative recombination channel is still present. We also show that SRH is more effective in the case of low-doped semiconductors, as effective screening by mobile carrier density could reduce the effect.

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Coulomb Contribution to Shockley–Read–Hall Recombination

Sakowski,

Strak,

Kempisty

et al. 2024

Materials

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On method of estimating recombination rates by analysis of time-resolved luminescence

Cited by 1 publication

References 31 publications

Coulomb Contribution to Shockley–Read–Hall Recombination

Coulomb Contribution to Shockley–Read–Hall Recombination

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