Zipangizo Zofunika Kwambiri Zopangira Ma Semiconductor: Mitundu ya Ma Wafer Substrates

Ma Wafer Substrates ngati Zida Zofunikira mu Zipangizo za Semiconductor

Ma Wafer substrates ndi omwe amanyamula zida za semiconductor, ndipo mawonekedwe awo amatsimikizira mwachindunji momwe chipangizocho chimagwirira ntchito, mtengo wake, ndi malo ogwiritsira ntchito. Nazi mitundu ikuluikulu ya ma wafer substrates pamodzi ndi zabwino ndi zovuta zake:

1.Silikoni (Si)

• Machitidwe pamsika:Ndi gawo la msika wa semiconductor wapadziko lonse lapansi woposa 95%.

• Ubwino:

  • Mtengo wotsika:Zipangizo zambiri zopangira (silicon dioxide), njira zopangira zinthu zokhwima, komanso chuma champhamvu.

  • Kugwirizana kwakukulu kwa njira:Ukadaulo wa CMOS ndi wokhwima kwambiri, umathandizira ma node apamwamba (monga 3nm).

  • Ubwino kwambiri wa kristalo:Ma wafer akuluakulu (makamaka mainchesi 12, mainchesi 18 akupangidwa) okhala ndi chilema chochepa amatha kulimidwa.

  • Katundu wokhazikika wa makina:Zosavuta kudula, kupukuta, ndi kugwira.

• Zoyipa:

  • Mpata wochepa (1.12 eV):Mphamvu yotayikira kwambiri pa kutentha kwakukulu, zomwe zimalepheretsa kugwiritsa ntchito bwino chipangizo chamagetsi.

  • Mpata wosalunjika:Kuwala kotsika kwambiri, sikoyenera kugwiritsa ntchito zipangizo zamagetsi monga ma LED ndi ma laser.

  • Kuyenda kochepa kwa ma elekitironi:Kugwira ntchito kotsika kwambiri poyerekeza ndi ma semiconductors a compound.
    

2.Gallium Arsenide (GaAs)

• Mapulogalamu:Zipangizo za RF zamafupipafupi (5G/6G), zipangizo zamagetsi (ma laser, maselo a dzuwa).

• Ubwino:

  • Kuyenda kwa ma elekitironi kwambiri (5–6× kuposa kwa silikoni):Yoyenera kugwiritsa ntchito liwiro lapamwamba komanso pafupipafupi monga kulumikizana kwa ma millimeter-wave.

  • Chingwe cholunjika (1.42 eV):Kusintha kwamphamvu kwa kuwala kwa photoelectric, komwe kumayambira ma laser a infrared ndi ma LED.

  • Kutentha kwambiri ndi kukana kuwala kwa dzuwa:Yoyenera malo oyendera ndege komanso malo ovuta.

• Zoyipa:

  • Mtengo wokwera:Zinthu zochepa, kukula kovuta kwa makristalo (kosavuta kusuntha), kukula kochepa kwa wafer (makamaka mainchesi 6).

  • Kachitidwe ka Brittle:Zimakhala zosavuta kusweka, zomwe zimapangitsa kuti ntchito yokonza zinthu ikhale yochepa.

  • Kuopsa kwa poizoni:Arsenic imafuna kusamalidwa mosamala komanso kulamulira chilengedwe.

3. Silikoni Carbide (SiC)

• Mapulogalamu:Zipangizo zamagetsi zotentha kwambiri komanso zamagetsi amphamvu (ma EV inverters, malo ochajira), ndege.

• Ubwino:

  • Chigawo chachikulu cha bandgap (3.26 eV):Mphamvu yowononga kwambiri (10 × ya silicon), kulekerera kutentha kwambiri (kutentha kogwira ntchito >200 °C).

  • Kutentha kwambiri (≈3× silicon):Kutaya kutentha bwino kwambiri, zomwe zimathandiza kuti mphamvu ya dongosolo ikhale yochuluka.

  • Kutayika kochepa kwa kusintha:Zimathandiza kuti mphamvu zisinthe bwino.

• Zoyipa:

  • Kukonzekera kwa substrate kovuta:Kukula pang'onopang'ono kwa makristalo (> sabata imodzi), kuwongolera zolakwika zovuta (ma micropipes, kusuntha), mtengo wokwera kwambiri (5–10× silicon).

  • Kukula kwa wafer kakang'ono:Makamaka mainchesi 4–6; mainchesi 8 akadali kupangidwa.

  • Zovuta kuzikonza:Yolimba kwambiri (Mohs 9.5), zomwe zimapangitsa kudula ndi kupukuta kukhala kotenga nthawi.

4. Gallium Nitride (GaN)

• Mapulogalamu:Zipangizo zamagetsi zomwe zimathamanga kwambiri (kuchaja mwachangu, malo oyambira a 5G), ma LED/ma laser abuluu.

• Ubwino:

  • Kuyenda kwa ma elekitironi okwera kwambiri + bandgap yotakata (3.4 eV):Zimaphatikiza magwiridwe antchito apamwamba (> 100 GHz) ndi mphamvu yamagetsi apamwamba.

  • Kukana kochepa:Amachepetsa kutayika kwa mphamvu ya chipangizo.

  • Heteroepitaxy imagwirizana:Amamera kwambiri pa silicon, safiro, kapena SiC substrates, zomwe zimachepetsa mtengo.

• Zoyipa:

  • Kukula kwa kristalo imodzi kumakhala kovuta:Heteroepitaxy ndi yofala kwambiri, koma kusagwirizana kwa lattice kumabweretsa zolakwika.

  • Mtengo wokwera:Ma substrates a Native GaN ndi okwera mtengo kwambiri (wafer wa mainchesi awiri ukhoza kuwononga madola zikwi zingapo).

  • Mavuto odalirika:Zochitika monga kugwa kwa magetsi zimafuna kukonzedwanso.

5. Indium Phosphide (InP)

• Mapulogalamu:Maulalo othamanga kwambiri (ma laser, ma photodetector), zipangizo za terahertz.

• Ubwino:

  • Kuyenda kwa ma elekitironi okwera kwambiri:Imathandizira ntchito yoposa 100 GHz, yoposa ma GaA.

  • Chigawo cha bandgap cholunjika chokhala ndi mafunde ofanana:Zipangizo zapakati pa kulumikizana kwa ulusi wa kuwala wa 1.3–1.55 μm.

• Zoyipa:

  • Yofewa komanso yokwera mtengo kwambiri:Mtengo wa substrate umaposa 100 × silicon, kukula kochepa kwa wafer (mainchesi 4–6).

6. Safira (Al₂O₃)

• Mapulogalamu:Kuwala kwa LED (GaN epitaxial substrate), galasi lophimba zinthu zamagetsi.

• Ubwino:

  • Mtengo wotsika:Zotsika mtengo kwambiri kuposa ma substrates a SiC/GaN.

  • Kukhazikika kwabwino kwambiri kwa mankhwala:Yosagonjetsedwa ndi dzimbiri, yoteteza kwambiri kutentha.

  • Kuwonekera:Yoyenera nyumba zoyimirira za LED.

• Zoyipa:

  • Kusagwirizana kwakukulu kwa latisi ndi GaN (>13%):Zimayambitsa kuchuluka kwa chilema, zomwe zimafuna zigawo zotetezera.

  • Kutentha koipa (~1/20 ya silicon):Zimalepheretsa magwiridwe antchito a ma LED amphamvu kwambiri.

7. Ma Substrate a Ceramic (AlN, BeO, ndi zina zotero)

• Mapulogalamu:Zofalitsira kutentha za ma module amphamvu kwambiri.

• Ubwino:

  • Choteteza kutentha + kutentha kwambiri (AlN: 170–230 W/m·K):Yoyenera kulongedza zinthu zambiri.

• Zoyipa:

  • Chopanda kristalo chimodzi:Sizingathandize mwachindunji kukula kwa chipangizocho, koma zimagwiritsidwa ntchito ngati zinthu zomangira ma CD okha.

8. Ma Substrate Apadera

• SOI (Silicon pa Insulator):

  • Kapangidwe:Sangweji ya Silicon/SiO₂/silicon.

  • Ubwino:Amachepetsa mphamvu ya parasitic, kuuma kwa radiation, komanso kuletsa kutayikira kwa madzi (komwe kumagwiritsidwa ntchito mu RF, MEMS).

  • Zoyipa:Mtengo wake ndi 30–50% kuposa silicon yochuluka.

• Quartz (SiO₂):Amagwiritsidwa ntchito mu ma photomasks ndi MEMS; amateteza kutentha kwambiri koma ndi ofooka kwambiri.

• Daimondi:Chitsulo chotenthetsera kutentha kwambiri (>2000 W/m·K), pansi pa kafukufuku ndi chitukuko cha kutentha kwambiri.

Tebulo Loyerekeza la Chidule

Zinthu Zofunika Kwambiri Posankha Substrate

• Zofunikira pakuchita bwino:GaAs/InP ya ma frequency apamwamba; SiC ya ma voltage apamwamba, kutentha kwakukulu; GaAs/InP/GaN ya ma optoelectronics.

• Zoletsa mtengo:Zipangizo zamagetsi zomwe ogula amagwiritsa ntchito zimakonda silicon; malo apamwamba kwambiri amatha kutsimikizira kuti SiC/GaN ndi yokwera mtengo.

• Kuvuta kwa kuphatikiza:Silicon sichitha kusinthidwa kuti igwirizane ndi CMOS.

• Kusamalira kutentha:Mapulogalamu amphamvu kwambiri amakonda SiC kapena GaN yokhala ndi diamondi.

• Kukhwima kwa unyolo woperekera zinthu:Si > Sapphire > GaAs > SiC > GaN > InP.

Zochitika Zamtsogolo

Kuphatikiza kosiyanasiyana (monga GaN-on-Si, GaN-on-SiC) kudzagwirizanitsa magwiridwe antchito ndi mtengo, zomwe zikuyendetsa kupita patsogolo kwa 5G, magalimoto amagetsi, ndi quantum computing.