Umbhobho ogqunywe nge-vacuum(VIP) idlala indima ebalulekileyo kwiinkalo ezahlukeneyo zobuchwepheshe obuphezulu, ingakumbi kwiinkqubo ze-molecular beam epitaxy (MBE).MBEyindlela esetyenziselwa ukwenza iikristale ze-semiconductor ezikumgangatho ophezulu, inkqubo ebalulekileyo kwii-elektroniki zanamhlanje, kuquka izixhobo ze-semiconductor, iteknoloji ye-laser, kunye nezixhobo eziphambili. Ukugcina amaqondo obushushu aphantsi kakhulu ngexesha lezi nkqubo kubalulekile, kwaye umbhobho ogqunyiweyo we-vacuumItekhnoloji iqinisekisa ukuthuthwa ngokufanelekileyo kwezinto ezibangela i-cryogenic ukuze kugcinwe ezo meko zifunekayo. Le bhlog iza kuhlola indima kunye nokubaluleka kwayoumbhobho ogqunyiweyo we-vacuumkwiinkqubo ze-MBE.

Yintoni i-Molecular Beam Epitaxy (MBE)?

I-epitaxy ye-molecular beam (MBE) yinkqubo elawulwa kakhulu yokukhulisa iifilimu ezincinci zezinto, ezisetyenziswa rhoqo ekuveliseni ii-semiconductors. Le nkqubo yenzeka kwindawo ene-vacuum ephezulu, apho imisebe yee-athomu okanye iimolekyuli zijoliswe kwi-substrate, okuvumela ukukhula kweekristale ngelaphu ngolawulo oluchanekileyo. Ukugcina ukuthembeka kwale nkqubo, kufuneka amaqondo obushushu aphantsi kakhulu, aphoumbhobho ogqunyiweyo we-vacuumiteknoloji iba yinto ebalulekileyo.

Indima kaUmbhobho ogqunywe nge-vacuum in MBE Iinkqubo

Umbhobho ogqunywe nge-vacuumisetyenziswa kwiMBEiinkqubo zokuthutha ulwelo oluyi-cryogenic, olufana ne-nitrogen engamanzi okanye i-helium engamanzi, ukuya kupholisa izinto ezingaphakathi kwenkqubo. Ezi zilwelo ziyi-cryogenic zibalulekile ekugcineni i-vacuum ephezulu kakhulu kunye nolawulo lobushushu oluya kuthiMBEiinkqubo zifuna ukusebenza kakuhle. Ngaphandle kokufakelwa kobushushu okusebenzayo, ulwelo oluyi-cryogenic luya kufudumala ngokukhawuleza, nto leyo ebangela ukungazinzi kobushushu kwaye ibeke emngciphekweni umgangatho wokukhula kwe-epitaxial.

Iumbhobho ogqunyiweyo we-vacuumiqinisekisa ukulahleka okuncinci kobushushu ngexesha lokuthuthwa kwezi zinto zi-cryogenic fluids. Umaleko we-vacuum phakathi kwemibhobho yangaphakathi neyangaphandle usebenza njengesivikeli esisebenza kakuhle, unciphisa ukudluliselwa kobushushu ngokuhambisa kunye nokuhambisa umoya, ezizezona zizathu ziphambili zokuguquguquka kobushushu kwiinkqubo ze-cryogenic.

NgobaUmbhobho ogqunywe nge-vacuum Kubalulekile kwiMBE Iinkqubo

Ukuchaneka okuphezulu okufunekayo kwiMBEiinkqubo zenzaumbhobho ogqunyiweyo we-vacuum imfuneko. Itekhnoloji ye-VIP inciphisa umngcipheko wokubila kolwelo oluyi-cryogenic, olunokuphazamisa ukupholisa kwenkqubo kunye nokuzinza kwe-vacuum. Ukongeza, ukusetyenziswa kwemibhobho egqunywe nge-vacuum kunceda ukunciphisa iindleko zamandla ngokunciphisa imfuneko yamandla okupholisa ongezelelweyo, okuphucula ukusebenza kakuhle kwenkqubo iyonke.

Enye inzuzo yokusebenzisaumbhobho ogqunyiweyo we-vacuumngaphakathiMBEiinkqubo zithembekile ixesha elide. Iipayipi zenzelwe ukugcina ubushushu obufudumeleyo ixesha elide, ukuqinisekisa ukusebenza rhoqo kwiindawo ezinobuthathaka kakhulu ezifanaMBE.

Isiphelo:Umbhobho ogqunywe nge-vacuum UkuphuculaMBE Ukusebenza kwenkqubo

Ukuhlanganiswa kweumbhobho ogqunyiweyo we-vacuumngaphakathiMBEiinkqubo zibalulekile ekugcineni ukuchaneka okuphezulu kunye nozinzo olufunwa zezi nkqubo. Ngokunciphisa ukudluliselwa kobushushu, iteknoloji ye-VIP iqinisekisa ukuba ulwelo lwe-cryogenic luhlala kumaqondo obushushu aphantsi afunekayo, lukhuthaza ukukhula kwe-semiconductor efanelekileyo kunye nokunciphisa iindleko zokusebenza.MBEiteknoloji iyaqhubeka nokuqhubela phambili, indimaumbhobho ogqunyiweyo we-vacuumukuxhasa ezi nkqubo kuya kuhlala kuyinto engabalulekanga.