Hexagonal SiGe Ikulonjeza Kuphatikizika Kwachindunji kwa Silicon Photonics…

Komanso, monga anasonyezera mu pepala "Direct bandgap emission from hexagonal germanium and silicon-germanium alloys" lofalitsidwa mu magazini Nature, iwo anatha. The radiation wavelength imasinthidwa mosalekeza pamitundu yambiri. Malinga ndi iwo, zomwe zapezedwa zatsopanozi zitha kuloleza kupangidwa kwa tchipisi ta Photonic mwachindunji mumayendedwe ophatikizika a silicon-germanium.
Chinsinsi chosinthira ma alloys a SiGe kukhala ma emitters a bandgap mwachindunji ndikupeza ma alloys a germanium ndi germanium-silicon okhala ndi mawonekedwe a hexagonal lattice. Ofufuza pa Technical University of Eindhoven, pamodzi ndi anzake ochokera ku Technical University of Munich ndi mayunivesite a Jena ndi Linz, amagwiritsa ntchito ma nanowires opangidwa kuchokera kuzinthu zosiyana monga ma templates a kukula kwa hexagonal.
Ma nanowires amakhala ngati ma templates a chipolopolo cha germanium-silicon pomwe zamkati mwake zimayika mawonekedwe a kristalo wa hexagonal. Komabe, poyamba nyumbazi sizikanatha kusangalala kuti zimatulutsa kuwala. Atatha kusinthanitsa malingaliro ndi ogwira nawo ntchito ku Walther Schottky Institute ku Technical University of Munich, adasanthula mawonekedwe a kuwala kwa m'badwo uliwonse ndipo potsirizira pake anakonza njira yopangira zinthu mpaka pamene ma nanowires amatha kutulutsa kuwala.
"Panthawi yomweyo, takwanitsa kuchita bwino kwambiri ngati indium phosphide kapena gallium arsenide," akutero Prof. Erik Bakkers wa ku Eindhoven University of Technology. Choncho, kupanga ma lasers opangidwa ndi germanium-silicon alloys omwe angaphatikizidwe muzinthu zamakono zopangira zinthu kungakhale nkhani ya nthawi.
"Ngati titha kupereka mauthenga apakompyuta amkati ndi apakati, liwiro likhoza kuwonjezeka ndi 1,000," adatero Jonathan Finley, pulofesa wa semiconductor quantum nanosystems ku TUM. zitha kuchepetsa kwambiri kuchuluka kwa ma radar a laser, zowunikira zamankhwala zowunikira matenda, komanso tchipisi toyesa mpweya ndi chakudya.
Silicon germanium alloy yosungunuka ndi kampani yathu imatha kuvomera makonda