Hauv cov khoom siv hluav taws xob niaj hnub thiab optoelectronics, cov khoom siv semiconductor ua lub luag haujlwm tsis tuaj yeem hloov pauv. Los ntawm smartphones thiab automotive radar mus rau qib industrial-qib lasers, cov khoom siv semiconductor nyob txhua qhov chaw. Ntawm tag nrho cov tsis tseem ceeb, resistivity yog ib qho ntawm cov kev ntsuas tseem ceeb tshaj plaws rau kev nkag siab thiab tsim cov khoom siv hluav taws xob semiconductor.
1. Resistant yog dab tsi?
Resistivity yog ib lub cev kom muaj nuj nqis uas ntsuas qhov muaj zog ntawm cov khoom tawm tsam qhov ntws ntawm hluav taws xob tam sim no, feem ntau qhia hauv ohm-centimeters (Ω·cm). Nws qhia txog qhov "tsis kam" sab hauv uas cov khoom siv hluav taws xob thaum lawv txav mus los ntawm cov khoom siv. Cov hlau feem ntau muaj kev tiv thaiv tsawg heev, cov insulators muaj kev tiv thaiv siab heev, thiab cov khoom siv semiconductors poob qhov chaw nyob nruab nrab ntawm - nrog rau qhov zoo dua ntawm tunable resistivity. Resistivity ρ = R * (L / A), qhov twg: R yog qhov hluav taws xob tsis kam, A yog qhov chaw hla ntawm cov khoom, L yog qhov ntev ntawm cov khoom.
2. Tej yam uas cuam tshuam rau Semiconductor Resistivity
Tsis zoo li cov hlau, qhov resistivity ntawm semiconductors tsis ruaj. Nws cuam tshuam los ntawm ntau yam tseem ceeb:
① Cov Khoom Siv: Cov khoom siv sib txawv xws li silicon (Si), gallium arsenide (GaAs), thiab indium phosphide (InP) muaj qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv.
② Doping: Qhia dopants (xws li boron los yog phosphorus) ntawm ntau hom thiab cov concentrations hloov cov cab kuj concentration, cuam tshuam rau resistivity.
③ Kub: Semiconductor resistivity yog qhov kub thiab txias heev. Raws li qhov kub nce, cov cab kuj nce siab, feem ntau ua rau qis qis dua.
④ Crystal Structure thiab Defects: Imperfections hauv cov qauv siv lead ua-xws li dislocations lossis defects- tuaj yeem cuam tshuam cov cab kuj thiab yog li cuam tshuam rau kev tiv thaiv.
3. Yuav ua li cas Resistivity cuam tshuam rau ntaus ntawv Performance
Hauv kev siv cov tswv yim, kev tiv thaiv ncaj qha cuam tshuam rau kev siv hluav taws xob, kev teb ceev, thiab kev ua haujlwm ruaj khov. Piv txwv li:
Nyob rau hauv lub laser diodes, siab heev resistivity ua rau cov cua kub tseem ceeb, uas cuam tshuam rau lub teeb tso zis efficiency thiab ntaus ntawv lifespan.
Nyob rau hauv RF li, ua tib zoo tuned resistivity enables pom impedance txuam thiab txhim kho teeb liab kis tau tus mob.
Hauv photodetectors, high-resistivity substrates feem ntau yog qhov tseem ceeb rau kev ua tiav qhov kev ua haujlwm tsis zoo tam sim no.
Yog li ntawd, kev tsim qauv thiab kev tswj xyuas qhov kev tiv thaiv yog qhov tseem ceeb hauv kev tsim khoom siv hluav taws xob semiconductor.
4. Tej yam muaj kev tiv thaiv kab mob (Reference Values)
Khoom hom Resistivity (Ω·cm)
Intrinsic Silicon (Si) ~ 2.3 × 10⁵
Doped Silicon (n-type / p-type) 10⁻³ ~ 10²
Gallium Arsenide (GaAs) 10⁶ (semi-insulating) ~ 10⁻³
Indium Phosphide (InP) 10⁴ ~ 10⁻²
5. Cov lus xaus
Resistivity yog ntau dua li cov khoom siv tsis yog-nws yog qhov tseem ceeb uas cuam tshuam ncaj qha rau kev ua haujlwm thiab kev ntseeg siab ntawm cov khoom siv semiconductor. Ntawm Lumispot, peb ua kom zoo dua los ntawm kev xaiv cov khoom siv, cov txheej txheem doping meej, thiab kev tswj xyuas cov txheej txheem kom ntseeg tau tias peb cov cuab yeej xa cov kev ua haujlwm siab thiab ua haujlwm ruaj khov thoob plaws ntau yam kev siv.
6. Txog Peb
Lumispot tshwj xeeb hauv kev txhim kho thiab tsim cov khoom siv hluav taws xob zoo tshaj plaws semiconductor lasers thiab optoelectronic li. Peb nkag siab lub luag haujlwm tseem ceeb uas cov khoom siv tsis zoo li kev tiv thaiv ua si hauv cov khoom lag luam. Tiv tauj peb kom paub ntau ntxiv txog kev tiv thaiv kev tiv thaiv, cov khoom siv semiconductor customized, thiab laser tsim kev daws teeb meem raws li koj daim ntawv thov xav tau.
Post lub sij hawm: Jun-09-2025