Hauv cov khoom siv hluav taws xob niaj hnub thiab optoelectronics, cov ntaub ntawv semiconductor ua lub luag haujlwm tseem ceeb. Txij li cov xov tooj ntse thiab cov radar tsheb mus rau cov lasers qib kev lag luam, cov khoom siv semiconductor nyob txhua qhov chaw. Ntawm tag nrho cov kev ntsuas tseem ceeb, resistivity yog ib qho ntawm cov ntsuas tseem ceeb tshaj plaws rau kev nkag siab thiab tsim cov khoom siv semiconductor kev ua tau zoo.
1. Kev Tiv Thaiv Yog Dab Tsi?
Kev tiv thaiv yog ib qho ntsuas uas ntsuas seb cov khoom siv tawm tsam qhov hluav taws xob ntws li cas, feem ntau qhia ua ohm-centimeters (Ω·cm). Nws qhia txog "kev tiv thaiv" sab hauv uas cov electrons ntsib thaum lawv txav mus los ntawm cov khoom siv. Cov hlau feem ntau muaj kev tiv thaiv qis heev, cov insulators muaj kev tiv thaiv siab heev, thiab cov semiconductors poob qee qhov nyob nruab nrab - nrog rau qhov zoo ntxiv ntawm kev tiv thaiv tunable. Kev tiv thaiv ρ=R*(L/A), qhov twg: R yog kev tiv thaiv hluav taws xob, A yog thaj chaw hla ntawm cov khoom siv, L yog qhov ntev ntawm cov khoom siv.
2. Cov Yam Uas Cuam Tshuam Rau Semiconductor Resistivity
Tsis zoo li cov hlau, qhov resistivity ntawm semiconductors tsis ruaj khov. Nws raug cuam tshuam los ntawm ntau yam tseem ceeb:
① Hom Khoom Siv: Cov ntaub ntawv semiconductor sib txawv xws li silicon (Si), gallium arsenide (GaAs), thiab indium phosphide (InP) muaj cov nqi resistivity sib txawv.
② Doping: Kev qhia txog cov dopants (xws li boron lossis phosphorus) ntawm ntau hom thiab ntau qhov sib txawv hloov pauv qhov concentration ntawm cov cab kuj, cuam tshuam rau qhov resistivity.
③ Kub: Semiconductor resistivity yog nyob ntawm qhov kub thiab txias heev. Thaum kub nce, qhov concentration ntawm tus neeg nqa khoom nce, feem ntau ua rau qhov resistivity qis dua.
④ Cov Qauv Siv Crystal thiab Cov Qhov Tsis Zoo: Cov qhov tsis zoo hauv cov qauv siv lead ua - xws li kev tawg lossis qhov tsis zoo - tuaj yeem cuam tshuam kev txav mus los ntawm tus neeg nqa khoom thiab yog li cuam tshuam rau kev tiv taus.
3. Kev Tiv Thaiv Cuam Tshuam Li Cas Rau Kev Ua Haujlwm ntawm Cov Khoom Siv
Hauv kev siv ua haujlwm, kev tiv taus cuam tshuam ncaj qha rau kev siv hluav taws xob, kev teb ceev, thiab kev ruaj khov ua haujlwm. Piv txwv li:
Hauv cov laser diodes, qhov resistivity siab dhau ua rau muaj cua sov loj, uas cuam tshuam rau qhov ua haujlwm ntawm lub teeb thiab lub neej ntawm lub cuab yeej.
Hauv cov khoom siv RF, kev tiv thaiv zoo ua rau muaj kev sib phim impedance zoo tshaj plaws thiab kev xa xov teeb liab zoo dua.
Hauv cov photodetectors, cov substrates siab-resistivity feem ntau yog qhov tseem ceeb rau kev ua tiav qhov kev ua tau zoo tsaus ntuj qis.
Yog li ntawd, kev tsim qauv meej thiab kev tswj hwm ntawm resistivity yog qhov tseem ceeb hauv kev tsim khoom siv semiconductor.
4. Cov Qeb Resistivity Industrial Ib Txwm Muaj (Cov Nqi Siv)
Hom Khoom Siv Resistivity (Ω·cm)
Silicon sab hauv (Si) ~2.3 × 10⁵
Doped Silicon (n-hom/p-hom) 10⁻³ ~ 10²
Gallium Arsenide (GaAs) 10⁶ (ib nrab rwb thaiv tsev) ~ 10⁻³
Indium Phosphide (InP) 10⁴ ~ 10⁻²
5. Xaus Lus
Kev tiv taus tsis yog ib qho khoom siv xwb - nws yog ib qho tseem ceeb uas cuam tshuam ncaj qha rau kev ua tau zoo thiab kev ntseeg siab ntawm cov khoom siv semiconductor. Ntawm Lumispot, peb ua kom zoo dua qhov tiv taus los ntawm kev xaiv cov khoom siv, cov txheej txheem doping meej, thiab kev tswj hwm cov txheej txheem kom ntseeg tau tias peb cov khoom siv ua haujlwm tau zoo thiab ruaj khov thoob plaws ntau yam kev siv.
6. Txog Peb
Lumispot tshwj xeeb hauv kev tsim thiab tsim cov semiconductor lasers thiab optoelectronic uas ua haujlwm tau zoo. Peb nkag siab txog lub luag haujlwm tseem ceeb uas cov khoom siv xws li resistivity ua si hauv kev ua haujlwm ntawm cov khoom. Tiv tauj peb kom paub ntau ntxiv txog kev tswj resistivity, cov ntaub ntawv semiconductor customized, thiab cov kev daws teeb meem laser tsim rau koj cov kev xav tau daim ntawv thov.
Lub sijhawm tshaj tawm: Lub Rau Hli-09-2025