Izinto Ezibalulekile Zokusetshenziswa Kokukhiqiza Ama-Semiconductor: Izinhlobo Ze-Wafer Substrates

Ama-Wafer Substrates njengezinto ezibalulekile kumadivayisi e-Semiconductor

Ama-substrate e-wafer ayizithwali ezibonakalayo zamadivayisi e-semiconductor, futhi izakhiwo zawo ezibonakalayo zinquma ngqo ukusebenza kwedivayisi, izindleko, kanye nezinkambu zohlelo lokusebenza. Ngezansi kunezinhlobo eziyinhloko zama-substrate e-wafer kanye nezinzuzo kanye nokungalungi kwawo:

1.I-Silicon (Si)

• Isabelo Semakethe:Ihlanganisa ngaphezu kwama-95% emakethe ye-semiconductor yomhlaba wonke.

• Izinzuzo:

  • Izindleko eziphansi:Izinto zokusetshenziswa eziningi (i-silicon dioxide), izinqubo zokukhiqiza ezivuthiwe, kanye nomnotho oqinile wesilinganiso.

  • Ukuhambisana kwenqubo ephezulu:Ubuchwepheshe be-CMOS buvuthiwe kakhulu, busekela ama-node athuthukile (isb., 3nm).

  • Ikhwalithi yekristalu enhle kakhulu:Ama-wafer amakhulu (ikakhulukazi angu-12 intshi, angu-18 intshi esathuthukiswa) anobunzima obuphansi angatshalwa.

  • Izakhiwo eziqinile zemishini:Kulula ukusika, ukupholisha, kanye nokuphatha.

• Okubi:

  • Igebe elincane (1.12 eV):Ukuvuza okuphezulu kwamanje emazingeni okushisa aphezulu, okunciphisa ukusebenza kahle kwedivayisi yamandla.

  • Igebe elingaqondile:Ukusebenza kahle kokukhishwa kokukhanya okuphansi kakhulu, akufaneleki kumadivayisi e-optoelectronic afana nama-LED nama-laser.

  • Ukuhamba kwama-electron okulinganiselwe:Ukusebenza okuphansi kwemvamisa ephezulu uma kuqhathaniswa nama-semiconductor ahlanganisiwe.
    

2.I-Gallium Arsenide (GaAs)

• Izicelo:Amadivayisi e-RF asebenza ngesivinini esiphezulu (5G/6G), amadivayisi e-optoelectronic (ama-laser, amaseli elanga).

• Izinzuzo:

  • Ukuhamba okuphezulu kwama-electron (5–6× okufana nokwe-silicon):Ifanele izinhlelo zokusebenza ezisheshayo nezivame kakhulu njengokuxhumana kwamagagasi angamamilimitha.

  • Igebe eliqondile (1.42 eV):Ukuguqulwa kwe-photoelectric okusebenza kahle kakhulu, isisekelo sama-laser e-infrared nama-LED.

  • Ukumelana nokushisa okuphezulu kanye nemisebe:Ifanelekela izindiza kanye nezindawo ezibucayi.

• Okubi:

  • Izindleko eziphezulu:Izinto ezincane, ukukhula okunzima kwekristalu (okuvame ukukhubeka), usayizi we-wafer olinganiselwe (ikakhulukazi amasentimitha angu-6).

  • Ama-mechanics e-Brittle:Ithambekele ekuqhekekeni, okuholela ekukhiqizeni okuphansi.

  • Ubuthi:I-Arsenic idinga ukuphathwa okuqinile kanye nokulawulwa kwemvelo.

3. I-Silicon Carbide (i-SiC)

• Izicelo:Amadivayisi wamandla ashisa kakhulu nanamandla aphezulu (ama-EV inverters, iziteshi zokushaja), izindiza.

• Izinzuzo:

  • Igebe elibanzi (3.26 eV):Amandla aphezulu okuqhekeka (10× okufana ne-silicon), ukubekezelela izinga lokushisa eliphezulu (izinga lokushisa lokusebenza >200 °C).

  • Ukushisa okuphezulu (≈3× silicon):Ukushabalalisa ukushisa okuhle kakhulu, okuvumela amandla esistimu aphezulu.

  • Ukulahlekelwa okuphansi kokushintsha:Kuthuthukisa ukusebenza kahle kokuguqulwa kwamandla.

• Okubi:

  • Ukulungiselela i-substrate okuyinselele:Ukukhula kancane kwekristalu (>isonto eli-1), ukulawulwa okunzima kweziphambeko (amapayipi amancane, ukuhlukaniswa), izindleko eziphakeme kakhulu (i-silicon engu-5–10×).

  • Usayizi we-wafer encane:Ngokuyinhloko amasentimitha angu-4–6; amasentimitha angu-8 asathuthukiswa.

  • Kunzima ukucubungula:Kuqinile kakhulu (Mohs 9.5), okwenza ukusika nokupholisha kuthathe isikhathi.

4. I-Gallium Nitride (GaN)

• Izicelo:Amadivayisi kagesi asebenza ngesivinini esiphezulu (ukushaja okusheshayo, iziteshi zesisekelo ze-5G), ama-LED/ama-laser aluhlaza okwesibhakabhaka.

• Izinzuzo:

  • Ukuhamba kwama-electron okuphezulu kakhulu + igebe elibanzi (3.4 eV):Ihlanganisa ukusebenza kwemvamisa ephezulu (>100 GHz) kanye nokusebenza kwe-voltage ephezulu.

  • Ukumelana okuphansi:Kunciphisa ukulahleka kwamandla edivayisi.

  • I-Heteroepitaxy iyahambisana:Ivame ukutshalwa ku-silicon, i-sapphire, noma i-SiC substrates, okunciphisa izindleko.

• Okubi:

  • Ukukhula kwekristalu elilodwa ngobuningi kunzima:I-Heteroepitaxy iyinto evamile, kodwa ukungafani kwe-lattice kuveza amaphutha.

  • Izindleko eziphezulu:Ama-substrate e-GaN abiza kakhulu (i-wafer engamasentimitha angu-2 ingabiza ama-USD ayizinkulungwane eziningana).

  • Izinselele zokuthembeka:Izenzakalo ezifana nokuwa kwamanje zidinga ukulungiswa.

5. I-Indium Phosphide (InP)

• Izicelo:Ukuxhumana kwe-optical okusheshayo (ama-laser, ama-photodetector), amadivayisi e-terahertz.

• Izinzuzo:

  • Ukuhamba kwama-electron okuphezulu kakhulu:Isekela ukusebenza okungaphezulu kwe-100 GHz, isebenza kangcono kune-GaAs.

  • Igebe eliqondile elihambisana nobude be-wavelength:Izinto eziyinhloko zokuxhumana ngefayibha ye-optical engu-1.3–1.55 μm.

• Okubi:

  • Ithambile futhi ibiza kakhulu:Izindleko ze-substrate zidlula i-silicon engu-100×, osayizi be-wafer abalinganiselwe (amasentimitha angu-4–6).

6. I-Sapphire (Al₂O₃)

• Izicelo:Ukukhanya kwe-LED (i-GaN epitaxial substrate), ingilazi yokumboza izinto zikagesi zabathengi.

• Izinzuzo:

  • Izindleko eziphansi:Ishibhile kakhulu kune-SiC/GaN substrates.

  • Ukuqina kwamakhemikhali okuhle kakhulu:Ayimelani nokugqwala, ivikela kakhulu.

  • Ukucaca:Ifanele izakhiwo ze-LED eziqondile.

• Okubi:

  • Ukungafani okukhulu kwe-lattice ne-GaN (>13%):Kubangela ukuminyana okukhulu kwesici, okudinga izendlalelo ze-buffer.

  • Ukushisa okubi (~1/20 ye-silicon):Kukhawulela ukusebenza kwama-LED anamandla amakhulu.

7. Izingxenyana zeCeramic (AlN, BeO, njll.)

• Izicelo:Izisabalalisi zokushisa zamamojula anamandla aphezulu.

• Izinzuzo:

  • Ukushisa okuphezulu kokushisa + ukufudumala okuphezulu (AlN: 170–230 W/m·K):Ilungele ukupakishwa okunobuningi obukhulu.

• Okubi:

  • Okungeyona ikristalu eyodwa:Ayikwazi ukusekela ngqo ukukhula kwedivayisi, isetshenziswa kuphela njengezinto zokupakisha.

8. Izakhiwo Ezikhethekile

• I-SOI (i-Silicon ku-Insulator):

  • Isakhiwo:Isandwich ye-Silicon/SiO₂/silicon.

  • Izinzuzo:Kunciphisa amandla e-parasitic, ukuqina kwemisebe, nokucindezela ukuvuza (okusetshenziswa ku-RF, MEMS).

  • Okubi:Kubiza kakhulu ngo-30–50% kune-silicon enkulu.

• I-Quartz (SiO₂):Kusetshenziswa kuma-photomasks kanye nama-MEMS; ukumelana nokushisa okuphezulu kodwa kuyashesha kakhulu.

• Idayimane:I-substrate yokushisa ephezulu kakhulu (>2000 W/m·K), ngaphansi kwe-R&D yokushabalalisa ukushisa okukhulu.

Ithebula Lesifinyezo Esiqhathanisayo

Izici Eziyinhloko Zokukhetha I-Substrate

• Izidingo zokusebenza:Ama-GaA/InP emvamisa ephezulu; i-SiC ye-voltage ephezulu, izinga lokushisa eliphezulu; ama-GaA/InP/GaN e-optoelectronics.

• Imikhawulo yezindleko:Ama-elekthronikhi abathengi athanda i-silicon; amasimu aphezulu angavumela amaphrimiyamu e-SiC/GaN.

• Ubunzima bokuhlanganisa:I-Silicon ayisakwazi ukushintshwa ukuze ivumelane ne-CMOS.

• Ukuphathwa kokushisa:Izinhlelo zokusebenza ezinamandla aphezulu zithanda i-SiC noma i-GaN esekelwe edayimane.

• Ukuvuthwa kochungechunge lokuphakelwa:Si > Sapphire > GaAs > SiC > GaN > InP.

Ithrendi Yesikhathi Esizayo

Ukuhlanganiswa okuhlukahlukene (isb., i-GaN-on-Si, i-GaN-on-SiC) kuzolinganisa ukusebenza kanye nezindleko, kuqhubekisele phambili intuthuko ku-5G, izimoto zikagesi, kanye ne-quantum computing.