Semiconductor chipangizo ndi pachimake cha zipangizo zamakono mafakitale makina, chimagwiritsidwa ntchito makompyuta, ogula zamagetsi, maukonde kulankhulana, zamagetsi magalimoto, ndi madera ena pachimake, makampani semiconductor makamaka wapangidwa zigawo zinayi zofunika: madera Integrated, zipangizo optoelectronic, chipangizo chodziwikiratu, sensa, yomwe imakhala yopitilira 80% ya mabwalo ophatikizika, nthawi zambiri ndi semiconductor ndi zofanana madera.
Dera lophatikizika, malinga ndi gulu lazogulitsa limagawidwa m'magulu anayi: microprocessor, kukumbukira, zida zomveka, magawo oyeserera. Komabe, ndi kukula kosalekeza kwa gawo la ntchito za zida za semiconductor, nthawi zambiri zapadera zimafuna kuti ma semiconductor athe kutsata kugwiritsa ntchito kutentha kwakukulu, kutentha kwakukulu, mphamvu yayikulu ndi malo ena, osawononga, m'badwo woyamba ndi wachiwiri. zida za semiconductor zilibe mphamvu, kotero m'badwo wachitatu wa zida za semiconductor zidayamba.
Pakali pano, lonse gulu kusiyana semiconductor zipangizo akuimiridwa ndisilicon carbide(SiC), gallium nitride (GaN), zinc oxide (ZnO), diamondi, aluminium nitride (AlN) amakhala pamsika waukulu ndi zabwino zambiri, zomwe zimatchedwa zida za semiconductor za m'badwo wachitatu. M'badwo wachitatu wa zida za semiconductor ndi m'lifupi bandi kusiyana, ndi apamwamba kusweka magetsi kumunda, matenthedwe madutsidwe, pakompyuta anadzaza mlingo ndi apamwamba kukana ma radiation, oyenera kupanga kutentha kwambiri, mafupipafupi, kukana cheza ndi zida mkulu mphamvu. , yomwe nthawi zambiri imadziwika kuti wide bandgap semiconductor materials (yoletsedwa band m'lifupi ndi wamkulu kuposa 2.2 eV), amatchedwanso kutentha kwa semiconductor zipangizo. Kuchokera pakafukufuku waposachedwa pa zida ndi zida za m'badwo wachitatu wa semiconductor, silicon carbide ndi gallium nitride semiconductor zida ndizokhwima kwambiri, ndipoteknoloji ya silicon carbidendi okhwima kwambiri, pamene kafukufuku wa nthaka okusayidi, diamondi, aluminium nitride ndi zipangizo zina akadali pa siteji koyamba.
Zipangizo ndi Katundu Wawo:
Silicon carbidezakuthupi chimagwiritsidwa ntchito mu mayendedwe ceramic mpira, mavavu, zipangizo semiconductor, gyros, zida kuyeza, Azamlengalenga ndi madera ena, wakhala zinthu Irreplaceable m'madera ambiri mafakitale.
SiC ndi mtundu wa superlattice zachilengedwe komanso wamba homogeneous polytype. Pali mabanja opitilira 200 (omwe amadziwika pano) a homotypic polytypic chifukwa cha kusiyana kwapang'onopang'ono pakati pa Si ndi C diatomic zigawo, zomwe zimatsogolera kumitundu yosiyanasiyana ya kristalo. Choncho, SiC ndi yabwino kwa m'badwo watsopano wa kuwala emitting diode (LED) gawo lapansi, mkulu mphamvu zipangizo zamagetsi.
| khalidwe | |
| katundu wakuthupi | Kuuma kwakukulu (3000kg / mm), kumatha kudula ruby |
| High kuvala kukana, wachiwiri kwa diamondi | |
| Thermal conductivity ndi 3 nthawi zambiri kuposa Si ndi 8 ~ 10 nthawi zambiri kuposa za GaAs. | |
| Kukhazikika kwa kutentha kwa SiC ndikokwera kwambiri ndipo sikungatheke kusungunula pamphamvu ya mumlengalenga | |
| Kuchita bwino kwa kutentha kwapakati ndikofunikira kwambiri pazida zamphamvu kwambiri | |
|
mankhwala katundu | Kukana kwa dzimbiri kolimba kwambiri, kukana pafupifupi chilichonse chodziwika kuti chiziwononga kutentha |
| SiC pamwamba imatulutsa okosijeni mosavuta kuti ipange SiO, wosanjikiza wopyapyala, imatha kuletsa kuwonjezereka kwa okosijeni, mkati Pamwamba pa 1700 ℃, filimu ya okusayidi imasungunuka ndikutulutsa okosijeni mwachangu | |
| Bandgap ya 4H-SIC ndi 6H-SIC ili pafupi nthawi za 3 kuposa za Si ndi 2 nthawi za GaAs: Kuwonongeka kwa gawo lamagetsi lamagetsi ndi dongosolo la kukula kwake kuposa Si, ndipo liwiro la electron drift liri lodzaza. Nthawi ziwiri ndi theka za Si. Gulu la 4H-SIC ndilokulirapo kuposa la 6H-SIC |
Nthawi yotumiza: Aug-01-2022