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TZID:Europe/Vienna
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DTSTART:20180325T030000
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DTSTART:20171029T020000
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BEGIN:VEVENT
DTSTAMP:20260312T160556Z
UID:5a1ead34b1bd5583272092@ist.ac.at
DTSTART:20171211T100000
DTEND:20171211T120000
DESCRIPTION:Speaker: Michael Kniely\nhosted by Julian Fischer\nAbstract: Th
 is talk is concerned with a semiconductor model including trapped states i
 n an intermediate energy band. We will introduce a recombination-drift-dif
 fusion system and employ the entropy approach in order to obtain an entrop
 y-entropy production (EEP) inequality. In particular\, we shall focus on t
 he derivation of such an EEP-inequality. Exponential convergence to the eq
 uilibrium is then a consequence of this EEP-estimate. An interesting featu
 re of our results is the fact that the EEP-constant\, and hence the conver
 gence rate\, is independent of the average lifetime of an electron in a tr
 apped state.Moreover\, we will also discuss the existence of global weak s
 olutions and present some available upper and lower bounds. And as our app
 roach is uniform with respect to the lifetime of an electron in a trapped 
 state\, we can also study the limiting case of a vanishing lifetime. This 
 gives rise to the classical Shockley-Read-Hall model\, for which we obtain
  exponential convergence to the equilibrium now as a side-product.
LOCATION:Big Seminar room Ground floor / Office Bldg West (I21.EG.101)\, IS
 TA
ORGANIZER:jdeanton@ist.ac.at
SUMMARY:Michael Kniely: The entropy method in the context of band-trapped s
 tates in semiconductor materials
URL:https://talks-calendar.ista.ac.at/events/986
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