Quiz2_Solutions_F10

Quiz2_Solutions_F10 - Student #: The Shockley-Read-Hall...

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rofuft)* p|)+zn,) a) If 5x101s electrons/cm3 are being injected intop-doped silicon with a doping concentration oflfu: 1016cm-3 can this be considered low-level injection? (Explain your answer.) lJo" T,* **-**q**-$** fum & **i *"&"{ *a-^r6{**t +s fi-osu f" W tft,,-i{,*r,'b o,*,rt';{^. *-or + '#^-{ ('*t,:"^ c_k €6 p>t'\y is n*$ $*#8; Student #: The Shockley-Read-Hall model uses the equation below to calculate the net recombination rate in a semiconductor. LI : "(*)p(.)- "? b) If 5x10r5 electrons/cm'are being injected intop-doped silicon with a^doping concentration ofi/.a: 1016 cffi-3, as in (a) above, and a caffter recombination rate of U: l02t cm-'s-l is measured, what is the value of the minority carrier lifetim e, r0, for this material? (You may use any approximation that is appropriate.) lv fl - 4?-* ffirff* f1 g * €wlil$s***;s ,'fl 6 d S'u#. ffi-* T nf s J-rdfK /#*#u &*';-t =jr P t t i{u{.=( t# rr{*iJi - e w g$pns**'. c)
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Quiz2_Solutions_F10 - Student #: The Shockley-Read-Hall...

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