Nyob rau hauv ib qho kev tsis sib haum xeeb pn kev sib tshuam cov kev sib tshuam tam sim no ntawm qhov sib npaug yog?

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Nyob rau hauv ib qho kev tsis sib haum xeeb pn kev sib tshuam cov kev sib tshuam tam sim no ntawm qhov sib npaug yog?
Nyob rau hauv ib qho kev tsis sib haum xeeb pn kev sib tshuam cov kev sib tshuam tam sim no ntawm qhov sib npaug yog?

Video: Nyob rau hauv ib qho kev tsis sib haum xeeb pn kev sib tshuam cov kev sib tshuam tam sim no ntawm qhov sib npaug yog?

Video: Nyob rau hauv ib qho kev tsis sib haum xeeb pn kev sib tshuam cov kev sib tshuam tam sim no ntawm qhov sib npaug yog?
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Nyob rau hauv qhov tsis ncaj ncees PN-kho qhov kev sib tshuam tam sim no ntawm qhov sib npaug yog zero, vim tias sib npaug tab sis cov neeg nqa khoom hla hla kev sib tshuam.

Thaum pn kev sib tshuam tsis ncaj ncees qhov kev sib tshuam tam sim no ntawm qhov sib npaug yog?

A. Txoj kev sib tshuam tam sim no ntawm qhov sib npaug yog zero raws li kev them nqi tsis hla kev sib tshuam.

Yuav ua li cas thaum PN kev sib tshuam tsis ncaj ncees?

Cov neeg nqa khoom hla hla kev sib tshuam

P-n Kev sib tshuam uas tsis muaj qhov hluav taws xob sab nraud raug siv hu ua xoom bias p-n junction. Zero bias p-n Junction tseem hu ua unbiased p-n junction. … Tsis tas li ntawd, txij li dawb electrons thiab qhov ntawm qhov sib txuas yog nyob ze rau ib leeg

Pn kev sib tshuam tuaj rau hauv qhov sib npaug li cas?

Equilibrium (zero bias) Ntawm qhov sib txuas, cov electrons dawb hauv n-hom yog nyiam rau qhov zoo hauv p-hom Lawv diffuse rau hauv p-hom, ua ke nrog lub qhov, thiab tshem tawm ib leeg tawm. … Cov qhov diffuse rau hauv hom n, ua ke nrog cov electrons dawb, thiab tshem tawm ib leeg.

Yuav ua li cas thaum pn kev sib tshuam mus txog qhov sib npaug?

Thaum qhov kev xav ntawm kev sib kis vim yog tsav los ntawm cov cab kuj sib txawv ntawm p thiab n sab, thiab cov hluav taws xob ua haujlwm uas tawm tsam qhov kev nyiam ntawm diffusion, thaum cov ob leeg sib npaug sib npaug, ces koj muaj qhov sib npaug pn junction.

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