Ho feta moo, joalokaha ba bontšitse pampiring e reng "Direct bandgap emission from hexagonal germanium and silicon-germanium alloys" e hatisitsoeng koranteng ea Nature, ba ile ba khona ho. Bophahamo ba maqhubu a mahlaseli bo lula bo feto-fetoha ka mefuta e mengata. Ho ea ka bona, litšibollo tsena tse ncha li ka lumella nts'etsopele ea li-chips tsa photonic ka ho toba lipotolohong tse kopantsoeng tsa silicon-germanium.
Senotlolo sa ho fetola li-alloys tsa SiGe hore e be li-emitter tsa bandgap tse tobileng ke ho fumana li-alloys tsa germanium le germanium-silicon tse nang le sebopeho sa hexagonal lattice. Bafuputsi ba Technical University of Eindhoven, hammoho le basebetsi-'moho le Univesithi ea Technical ea Munich le liunivesithi tsa Jena le Linz, ba ile ba sebelisa li-nanowires tse entsoeng ka thepa e fapaneng e le li-templates bakeng sa khōlo ea hexagonal.
Joale li-nanowires li sebetsa e le litempele tsa khetla ea germanium-silicon eo ho eona thepa e ka tlase e behang sebopeho sa kristale sa hexagonal. Leha ho le joalo, qalong, mehaho ena e ne e ke ke ea thabela ho ntša khanya. Ka mor'a ho fapanyetsana maikutlo le basebetsi-'moho le basebetsi-'moho le Setsi sa Walther Schottky Univesithing ea Technical ea Munich, ba ile ba hlahlobisisa thepa ea optical ea moloko o mong le o mong 'me qetellong ba ntlafatsa mokhoa oa ho etsa lintho ho fihlela moo li-nanowires li ka hlahisang leseli.
"Ka nako e ts'oanang, re fihletse ts'ebetso e batlang e tšoana le indium phosphide kapa gallium arsenide," ho bolela Prof. Erik Bakkers oa Univesithi ea Theknoloji ea Eindhoven. Ka hona, ho thehoa ha li-lasers tse thehiloeng ho li-alloys tsa germanium-silicon tse ka kopanngoang le mekhoa e tloaelehileng ea tlhahiso e ka 'na ea e-ba taba ea nako feela.
"Haeba re ne re ka fana ka puisano ea elektronike ka hare le ka hare-hare, lebelo le ka eketsoa ka karolo ea 1,000," ho boletse Jonathan Finley, moprofesa oa semiconductor quantum nanosystems TUM. e ka fokotsa haholo palo ea liradara tsa laser, lisensara tsa lik’hemik’hale bakeng sa tlhahlobo ea bongaka, le li-chips bakeng sa ho lekanya moea le boleng ba lijo.”
Silicone germanium alloy e qhibilihisitsoeng ke k'hamphani ea rona e ka amohela likarolo tse ikhethileng
Nako ea poso: Jun-21-2023