Qhov sib txawv tseem ceeb ntawm degenerate thiab non-degenerate semiconductors yog tias nyob rau hauv degenerate semiconductors, kev txhaj tshuaj ntawm electrons los yog qhov tsuas yog ua tau los ntawm Fermi zog theem, whereas non-degenerate semiconductors yuav ua rau tsim ntawm ob hom kev sib cuag. rau cov khoom siv organic.
Semiconductors yog cov khoom siv hluav taws xob muaj txiaj ntsig uas poob ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob. Degenerate semiconductors yog ib hom semiconductors uas muaj qib siab ntawm doping tuaj yeem pom, ua rau cov khoom siv hluav taws xob ua cov hlau ntau dua li cov khoom siv semiconductor.
Dab tsi yog Degenerate Semiconductors?
Degenerate semiconductors yog ib hom semiconductors uas muaj qib siab ntawm doping tuaj yeem pom, ua rau semiconductor ua hlau dua li cov khoom siv semiconductor. Tsis zoo li lwm hom, hom semiconductor no tsis ua raws li txoj cai ntawm kev txiav txim loj (txoj cai ntawm kev txiav txim loj cuam tshuam nrog cov khoom siv hauv nruab nrog cev nrog qhov kub thiab txias).
Daim duab 01: Semiconductor Doping
Thaum xav txog qib doping nruab nrab, dopant atoms tsim ib tus neeg doping qib uas suav tias yog lub xeev hauv cheeb tsam uas muaj peev xwm pub cov khoom siv hluav taws xob los yog qhov los ntawm kev txhawb nqa thermal rau ob qho tib si conduction lossis valence bands. Thaum cov impurity theem siab txaus, tus neeg atoms uas ua rau impurity tuaj yeem nyob ze txaus, uas ua rau cov qib doping sib koom ua ke rau lwm qhov impurity band. Ntawm no, tus cwj pwm ntawm xws li ib tug system tso tseg tsis qhia cov yam ntxwv ntawm ib tug semiconductor. Piv txwv li, kev nce hauv kev ua haujlwm ntawm lub cev tuaj yeem tshwm sim nrog qhov kub thiab txias.
Txawm li cas los xij, lub degenerate semiconductor muaj tsawg dua cov nqa khoom piv rau cov hlau tiag. Yog li ntawd, tus cwj pwm yog nruab nrab ntawm ib qho semiconductor thiab hlau.
Dab tsi yog qhov tsis yog-Degenerate Semiconductors?
Non-degenerate semiconductors yog ib hom semiconductors uas muaj theem nrab ntawm doping, thiab dopant atoms tau zoo sib cais los ntawm ib leeg nrog kev cuam tshuam tsis zoo. Ntxiv mus, dopant atoms nthuav tawm cov qib zog sib cais, thiab cov no feem ntau yog tsim hauv qab ntawm txoj hlua khi los yog nyob rau sab saum toj ntawm valence band ntug.
Hauv kev sib koom ua ke, raws li kev sib txuas ntawm ligands, qhov hloov pauv ion tsis raug cais tawm lawm. Yog li ntawd, dative bonding los ntawm ligands tshwm sim nyob rau hauv lub splitting ntawm tsib d orbitals rau hauv ob pawg. Lub zog ntawm ob pawg no tsis sib npaug. Yog li ntawd, peb tuaj yeem piav qhia lawv tias tsis yog degenerate orbitals.
Qhov txawv ntawm Degenerate thiab Non-degenerate Semiconductor yog dab tsi?
Semiconductors yog cov khoom siv hluav taws xob uas nyob nruab nrab ntawm tus neeg xyuas pib thiab tsis yog tus coj. Qhov sib txawv tseem ceeb ntawm degenerate thiab non-degenerate semiconductors yog tias nyob rau hauv degenerate semiconductors, txhaj tshuaj electrons los yog qhov tsuas yog ua tau los ntawm Fermi zog theem, whereas non-degenerate semiconductors tuaj yeem tsim ob hom kev sib cuag rau cov khoom siv organic.
Cov hauv qab no qhia txog qhov sib txawv ntawm degenerate thiab non-degenerate semiconductors hauv daim ntawv tabular rau kev sib piv ntawm ib sab.
Summary – Degenerate vs Non-degenerate Semiconductor
Degenerate semiconductors yog hom semiconductors uas muaj qib siab ntawm doping tuaj yeem pom, ua rau lawv cov haujlwm zoo ib yam li cov hlau. Non-degenerate semiconductors yog ib hom semiconductors uas muaj theem nrab ntawm doping qhov twg dopant atoms tau zoo sib cais los ntawm ib leeg nrog kev cuam tshuam tsis zoo. Qhov sib txawv tseem ceeb ntawm degenerate thiab non-degenerate semiconductors yog tias nyob rau hauv degenerate semiconductors, txhaj tshuaj electrons los yog qhov tsuas yog ua tau los ntawm Fermi zog theem, whereas non-degenerate semiconductors tuaj yeem tsim ob hom kev sib cuag rau cov khoom siv organic.
