Izinto ezisetyenziswa kakhulu kwiMveliso yeeSemiconductor: Iintlobo zeeWafer Substrates

Ii-Wafer Substrates njengezixhobo eziphambili kwizixhobo ze-semiconductor

Ii-substrates ze-wafer zithwala izixhobo ze-semiconductor, kwaye iimpawu zazo zezinto ezibonakalayo zimisela ngokuthe ngqo ukusebenza kwesixhobo, iindleko, kunye neendawo zokusetyenziswa. Nazi iintlobo eziphambili ze-substrates ze-wafer kunye neenzuzo kunye neengxaki zazo:

1.I-Silicon (Si)

• Ukwabelana kwimakethi:Ibandakanya ngaphezulu kwe-95% yemarike yehlabathi ye-semiconductor.

• Iingenelo:

  • Ixabiso eliphantsi:Izinto ezisetyenzisiweyo ezininzi (i-silicon dioxide), iinkqubo zokuvelisa ezivuthiweyo, kunye noqoqosho oluqinileyo.

  • Ukuhambelana okuphezulu kwenkqubo:Itekhnoloji yeCMOS ikhulile kakhulu, ixhasa ama-node aphucukileyo (umz., i-3nm).

  • Umgangatho wekristale ogqwesileyo:Iiwafer ezinkulu (ubukhulu becala ziyi-intshi ezili-12, iisentimitha ezili-18 ezisakhiwa) ezinobunzima obuphantsi zingakhuliswa.

  • Iimpawu zoomatshini ezizinzileyo:Kulula ukusika, ukupolisha, kunye nokuphatha.

• Iingxaki:

  • Isithuba esincinci (1.12 eV):Umsinga ovuzayo ophezulu kumaqondo obushushu aphezulu, nto leyo ethintela ukusebenza kakuhle kwesixhobo samandla.

  • I-bandgap engathanga ngqo:Ukusebenza kakuhle kokukhupha umbane ekukhanyeni kuphantsi kakhulu, akufanelekanga kwizixhobo ze-optoelectronic ezifana nee-LED kunye ne-laser.

  • Ukuhamba kancinci kwee-electron:Ukusebenza okuphantsi kakhulu kwe-high-frequency xa kuthelekiswa nee-compound semiconductors.
    

2.IGallium Arsenide (GaAs)

• Izicelo:Izixhobo zeRF ezisebenza rhoqo (5G/6G), izixhobo ze-optoelectronic (iilaser, iiseli zelanga).

• Iingenelo:

  • Ukuhamba okuphezulu kwee-electron (5–6× okufana nokwe-silicon):Ifanelekile kwii-applications ezikhawulezayo neziphindaphindayo ezifana nonxibelelwano lwamaza e-millimeter.

  • I-bandgap ethe ngqo (1.42 eV):Ukuguqulwa kwe-photoelectric okusebenzayo kakhulu, isiseko se-infrared lasers kunye ne-LEDs.

  • Ukumelana nobushushu obuphezulu kunye nemitha:Ifanelekile kwiindawo ezineenqwelo moya nakwiindawo ezirhabaxa.

• Iingxaki:

  • Ixabiso eliphezulu:Izinto ezinqongopheleyo, ukukhula okunzima kwekristale (okunokukhubeka lula), ubungakanani bewafer obuncinci (ubukhulu bayo buziisentimitha ezi-6).

  • Ubuchule beBrittle:Inokuqhekeka lula, nto leyo ebangela ukuba imveliso yayo ibe sezantsi.

  • Ubuthi:I-Arsenic ifuna ukuphathwa ngokungqongqo kunye nolawulo lokusingqongileyo.

3. I-Silicon Carbide (i-SiC)

• Izicelo:Izixhobo zamandla ezinobushushu obuphezulu kunye nezombane ophezulu (ii-EV inverters, izitishi zokutshaja), i-aerospace.

• Iingenelo:

  • Isithuba esibanzi (3.26 eV):Amandla aphezulu okuqhekeka (10× okufana ne-silicon), ukunyamezelana nobushushu obuphezulu (ubushushu bokusebenza >200 °C).

  • Ukuqhuba okuphezulu kobushushu (≈3× silicon):Ukusasaza ubushushu ngendlela egqwesileyo, okuvumela ukuba kubekho uxinano olukhulu lwamandla enkqubo.

  • Ukulahleka kokutshintsha okuphantsi:Iphucula ukusebenza kakuhle kokuguqulwa kwamandla.

• Iingxaki:

  • Ukulungiselela i-substrate enzima:Ukukhula kancinci kwekristale (>iveki e-1), ulawulo olunzima lweziphene (ii-micropipes, ukusasazeka), ixabiso eliphezulu kakhulu (i-5–10× silicon).

  • Ubungakanani be-wafer encinci:Ngokuyintloko zii-intshi ezi-4–6; ii-intshi ezi-8 zisakhiwa.

  • Kunzima ukuyicubungula:Iqinile kakhulu (Mohs 9.5), nto leyo eyenza ukusika nokupolisha kuthathe ixesha elide.

4. I-Gallium Nitride (GaN)

• Izicelo:Izixhobo zamandla ezisebenza rhoqo (ukutshaja ngokukhawuleza, izitishi zesiseko ze-5G), ii-LED/iileyiza eziluhlaza okwesibhakabhaka.

• Iingenelo:

  • Ukuhamba kwe-electron okuphezulu kakhulu + i-bandgap ebanzi (3.4 eV):Idibanisa ukusebenza kwe-high-frequency (>100 GHz) kunye nokusebenza kwe-high-voltage.

  • Ayixhathisi kakhulu:Inciphisa ukulahleka kwamandla esixhobo.

  • I-Heteroepitaxy iyahambelana:Ityalwa kakhulu kwi-silicon, i-sapphire, okanye i-SiC substrates, nto leyo enciphisa iindleko.

• Iingxaki:

  • Ukukhula kwekristale enye ngobukhulu kunzima:I-Heteroepitaxy yeyona nto iphambili, kodwa ukungafani kwe-lattice kwazisa iziphene.

  • Ixabiso eliphezulu:Ii-substrates ze-GaN zasekhaya zibiza kakhulu (i-wafer eyi-intshi ezimbini ingabiza amawaka aliqela ee-USD).

  • Imingeni yokuthembeka:Izinto ezifana nokuwa kwangoku zifuna ukulungiswa.

5. I-Indium Phosphide (InP)

• Izicelo:Unxibelelwano olukhawulezayo lwe-optical (ii-laser, ii-photodetectors), izixhobo ze-terahertz.

• Iingenelo:

  • Ukuhamba kwee-electron okuphezulu kakhulu:Ixhasa ukusebenza okungaphezulu kwe-100 GHz, iphumelela ngaphezu kweeGaAs.

  • I-bandgap ethe ngqo enokuhambelana kwe-wavelength:Izinto eziphambili zonxibelelwano lwefayibha ye-optical ye-1.3–1.55 μm.

• Iingxaki:

  • Ithambile kwaye ibiza kakhulu:Ixabiso le-substrate lidlula i-100× silicon, ubungakanani be-wafer obulinganiselweyo (4–6 intshi).

6. Isafire (Al₂O₃)

• Izicelo:Izibane ze-LED (i-GaN epitaxial substrate), iglasi yokugquma izixhobo ze-elektroniki zabathengi.

• Iingenelo:

  • Ixabiso eliphantsi:Ixabiso liphantsi kakhulu kunee-substrates zeSiC/GaN.

  • Uzinzo oluhle kakhulu lweekhemikhali:Ayinakumelana nokugqwala, ikhusela kakhulu.

  • Ukungafihlisi:Ifanelekile kwizakhiwo ze-LED ezithe nkqo.

• Iingxaki:

  • Ukungafani okukhulu kwelathisi neGaN (>13%):Ibangela uxinano olukhulu lweziphene, nto leyo edinga iileya ze-buffer.

  • Ukuqhuba kakubi kobushushu (~1/20 yesilicon):Ithintela ukusebenza kwee-LED ezinamandla aphezulu.

7. Ii-substrates zeCeramic (AlN, BeO, njl.njl.)

• Izicelo:Izisasazi zobushushu zeemodyuli ezinamandla aphezulu.

• Iingenelo:

  • Ukwambathisa + ukuhanjiswa kobushushu okuphezulu (AlN: 170–230 W/m·K):Ifanelekile kwiipakethe ezinoxinano olukhulu.

• Iingxaki:

  • Ikristale engeyoyodwa:Ayikwazi ukuxhasa ngokuthe ngqo ukukhula kwesixhobo, isetyenziswa kuphela njengezinto zokupakisha.

8. Iisubstrates ezikhethekileyo

• I-SOI (iSilicon kwi-Insulator):

  • Ulwakhiwo:Isandwich yeSilicon/SiO₂/yesilicon.

  • Iingenelo:Inciphisa amandla e-parasitic, iqiniswe yimitha, icinezele ukuvuza (isetyenziswa kwi-RF, kwi-MEMS).

  • Iingxaki:Ixabiso liphezulu ngama-30–50% kune-silicon enkulu.

• I-Quartz (SiO₂):Isetyenziswa kwiifotomasks nakwiMEMS; iyamelana nobushushu obuphezulu kodwa ibuthathaka kakhulu.

• Idayimani:I-substrate ephezulu kakhulu yokuqhuba ubushushu (>2000 W/m·K), phantsi kwe-R&D yokutshabalalisa ubushushu obugqithisileyo.

Itheyibhile yesishwankathelo esithelekisayo

Izinto Ezibalulekileyo Zokukhetha I-Substrate

• Iimfuno zokusebenza:IiGaAs/InP ze-high-frequency; iiSiC ze-high-voltage, ubushushu obuphezulu; iiGaAs/InP/GaN ze-optoelectronics.

• Imida yeendleko:Izixhobo ze-elektroniki zabathengi zikhetha i-silicon; iindawo eziphezulu zinokuthethelela iiprimiyamu ze-SiC/GaN.

• Ubunzima bokudibanisa:I-Silicon ayinakuthathelwa indawo kukuhambelana kwe-CMOS.

• Ulawulo lobushushu:Izixhobo ezinamandla aphezulu zithanda iSiC okanye iGaN esekelwe kwidayimani.

• Ukuvuthwa kwekhonkco lobonelelo:Si > Sapphire > GaAs > SiC > GaN > InP.

Ikamva Lendlela

Ukuhlanganiswa okwahlukeneyo (umz., iGaN-on-Si, iGaN-on-SiC) kuya kulinganisela ukusebenza kunye neendleko, okuqhuba ukuphucuka kwe-5G, izithuthi zombane, kunye ne-quantum computing.