Ukutyhila i-Semiconductor Resistivity: IParameter engundoqo yoLawulo lokuSebenza

Kwi-elektroniki yanamhlanje kunye ne-optoelectronics, izixhobo ze-semiconductor zidlala indima engenakuthathelwa indawo. Ukusuka kwii-smartphones kunye ne-radar yeemoto ukuya kwi-laser-grade-grade lasers, izixhobo ze-semiconductor zikuyo yonke indawo. Phakathi kwazo zonke iiparamitha eziphambili, ukuxhathisa yenye yezona metrics zisisiseko zokuqonda kunye nokuyila ukusebenza kwesixhobo se-semiconductor.

1. Yintoni Ukuxhathisa?

I-Resistivity sisixa somzimba esilinganisa ukuba i-material ichase kangakanani ukuhamba kombane wangoku, oboniswa ngokuqhelekileyo nge-ohm-centimeters (Ω·cm). Ibonisa "ukuchasana" kwangaphakathi okwenzeka kwii-electron njengoko zihamba kwizinto eziphathekayo. Izinyithi ngokuqhelekileyo zine-resistive ephantsi kakhulu, i-insulators ine-resistive ephezulu kakhulu, kwaye i-semiconductors iwela kwenye indawo phakathi-kunye nenzuzo eyongeziweyo yokumelana nokuguquguquka. Ukuxhathisa ρ=R* (L/A), apho: R kukuxhathisa kombane, A yindawo enqamlezileyo yezinto, L ubude bezinto.

2. Izinto ezichaphazela ukuxhathisa kweSemiconductor

Ngokungafaniyo nesinyithi, ukuxhathisa kwe-semiconductors ayilungiswanga. Iphenjelelwa zizinto ezininzi ezibalulekileyo:
① Uhlobo lweMathiriyeli: Izinto ezahlukeneyo ze-semiconductor ezifana ne-silicon (Si), i-gallium arsenide (i-GaAs), kunye ne-indium phosphide (InP) zinemilinganiselo eyahlukeneyo yokumelana ne-intrinsic.
② I-Doping: Ukwazisa i-dopants (efana ne-boron okanye i-phosphorus) kwiindidi ezahlukeneyo kunye nogxininiso luguqula ugxininiso lomthwali, luchaphazela kakhulu ukuxhatshazwa.
③ Ubushushu: Ukuxhathisa kweSemiconductor kuxhomekeke kakhulu kubushushu. Njengoko iqondo lokushisa linyuka, ukugxilwa komthwali kuyenyuka, ngokubanzi kubangela ukuxhathisa okuphantsi.
④ I-Crystal Structure kunye neZiphene: Ukungafezeki kwisakhiwo se-crystal-ezifana nokuchithwa okanye iziphene-kunokuthintela ukuhamba komthwali kwaye ngaloo ndlela kuphembelele ukuxhathisa.

3. Indlela ukuxhathisa kuchaphazela ukusebenza kweDivaysi

Kwizicelo ezisebenzayo, ukuxhathisa kuchaphazela ngokuthe ngqo ukusetyenziswa kwamandla, isantya sokuphendula, kunye nokuzinza kokusebenza. Umzekelo:

Kwi-laser diode, ukuxhathisa okuphezulu ngokugqithisileyo kukhokelela ekufudumeni okubalulekileyo, okuchaphazela ukusebenza kakuhle kokukhanya kunye nobude besixhobo.

Kwizixhobo ze-RF, ukuxhathisa okucutshungulwe ngononophelo kuvumela ukuhambelana kwe-impedance kunye nokuhanjiswa komqondiso ophuculweyo.

Kwii-photodetectors, i-high-resistivity substrates ihlala iyimfuneko ekufezekiseni ukusebenza okuphantsi kobumnyama.
Ke ngoko, uyilo oluchanekileyo kunye nolawulo lokuxhathisa lubalulekile kubunjineli besixhobo se-semiconductor.

4. IiNqanaba eziQhelekileyo zokuChasa kwiShishini (IiNqobo zoReferensi)

Ukuxhathisa kohlobo lweMathiriyeli (Ω·cm)
I-Silicon yangaphakathi (Si) ~2.3 × 10⁵
I-Silicon yeDoped (n-uhlobo/p-uhlobo) 10⁻³ ~ 10²
Gallium Arsenide (GaAs) 10⁶ (semi-insulating) ~ 10⁻³
I-Indium Phosphide (InP) 10⁴ ~ 10⁻²

5. Isiphelo

Ukuchasana kungaphezulu kweparameter yezinto eziphathekayo-yinto ephambili echaphazela ngokuthe ngqo ukusebenza kunye nokuthembeka kwezixhobo ze-semiconductor. Kwi-Lumispot, siphucula ukuxhathisa ngokukhethwa kwezinto, iindlela ezichanekileyo zokusebenzisa i-doping, kunye nolawulo lwenkqubo esulungekileyo ukuqinisekisa ukuba izixhobo zethu zibonelela ngobuchule obuphezulu kunye nokusebenza okuzinzile kuluhlu olubanzi lwezicelo.

6. Malunga Nathi

ILumispot igxile ekuphuhliseni nasekuveliseni i-laser ye-semiconductor ephezulu yokusebenza kunye nezixhobo ze-optoelectronic. Siyayiqonda indima ebalulekileyo yokuba iiparamitha zezinto ezifana ne-resistivity zidlala ekusebenzeni kwemveliso. Qhagamshelana nathi ukuze ufunde ngakumbi malunga nolawulo lokuxhathisa, izixhobo ze-semiconductor ezenziwe ngokwezifiso, kunye nezisombululo zoyilo lwelaser ezilungiselelwe iimfuno zakho zesicelo.