Waxaa intaa dheer, sida ay ku muujiyeen xaashida "sii daynta bandgap tooska ah ee germanium hexagonal iyo silicon-germanium alloys" oo lagu daabacay joornaalka Nature, way awoodeen.Dhererka hirarka shucaaca ayaa si joogto ah loogu hagaajin karaa baaxad ballaaran.Sida laga soo xigtay iyaga, kuwan daahfurka cusub u oggolaan karaa horumarinta chips photonic si toos ah in wareegyada isku dhafan ee silicon-germanium.
Furaha lagu beddelayo daawaynta SiGe ee soo saarayaasha bandgap tooska ah waa in la helo germanium iyo germanium-silicon alloys oo leh qaab dhismeed laba geesood ah.Cilmi-baarayaasha Jaamacadda Farsamada ee Eindhoven, oo ay weheliyaan asxaabtooda ka socota Jaamacadda Farsamada ee Munich iyo jaamacadaha Jena iyo Linz, waxay isticmaaleen nanowires oo laga sameeyay walxo ka duwan qaab-dhismeedka koritaanka laba geesoodka ah.
Nanowires-yadu waxay markaa u adeegaan qaab-dhismeedka germanium-silicon qolof kaas oo walxaha hoose ku soo rogayaan qaab-dhismeedka crystal-ka.Bilowgii, si kastaba ha ahaatee, dhismayaashani kuma faraxsanaan karaan inay iftiimiyaan iftiinka.Ka dib markii ay fikrado isweydaarsadeen asxaabtooda Machadka Walther Schottky ee Jaamacadda Farsamada ee Munich, waxay falanqeeyeen sifooyinka indhaha ee jiil kasta waxayna ugu dambeyntii hagaajiyeen habka wax soo saarka ilaa heerka nanowires ay dhab ahaantii iftiimin karaan iftiinka.
"Isla markaa, waxaan gaarnay wax qabad u dhigma indium fosfide ama gallium arsenide," ayuu yiri Prof. Erik Bakkers oo ka tirsan jaamacadda Eindhoven ee Tignoolajiyada.Sidaa darteed, abuurista laysarka ku salaysan germanium-silicon alloys kuwaas oo lagu dhex dari karo hababka wax soo saarka caadiga ah waxay noqon kartaa arrin waqti uun ah.
"Haddii aan si toos ah u bixin karno isgaarsiinta elektiroonigga ah ee gudaha iyo ka dhexjirta, xawaaraha waxaa lagu kordhin karaa qodob ah 1,000," ayuu yiri Jonathan Finley, borofisar ku takhasusay semiconductor quantum nanosystems at TUM.waxay si weyn u dhimi kartaa tirada raadaarka laysarka, dareemayaasha kiimikada ee baadhista caafimaadka, iyo chips-ka lagu cabbiro tayada hawada iyo cuntada.
Daawaha silikoon germanium ee ay dhalaalisay shirkadeena waxay aqbali kartaa qiyaas la habeeyey
Waqtiga boostada: Juun-21-2023