Li-photodetector tsa lebelo le phahameng li hlahisoa ke li-photodetector tsa InGaAs

Li-photodetector tsa lebelo le phahameng li hlahisoa keLi-photodetector tsa InGaAs

Li-photodetector tsa lebelo le phahamengLefapheng la puisano ya optical ho kenyeletswa haholo-holo di-photodetector tsa III-V InGaAs le IV full Si le Ge/Li-photodetector tsa Si. Ea pele ke sesebelisoa sa setso sa ho lemoha haufi le infrared, se 'nileng sa busa ka nako e telele, ha sa morao se itšetlehile ka theknoloji ea silicon optical hore e be naleli e ntseng e phahama, 'me ke sebaka se chesang lefapheng la lipatlisiso tsa machaba tsa optoelectronics lilemong tsa morao tjena. Ho phaella moo, lisebelisoa tse ncha tse thehiloeng ho perovskite, lintho tsa tlhaho le thepa ea mahlakore a mabeli li ntse li hola ka potlako ka lebaka la melemo ea ho sebetsa habonolo, ho tenyetseha hantle le thepa e ka fetoloang. Ho na le liphapang tse kholo lipakeng tsa lisebelisoa tsena tse ncha le lisebelisoa tsa setso tsa ho lemoha li-photodetector tse sa tloaelehang thepa ea thepa le lits'ebetso tsa tlhahiso. Lisebelisoa tsa ho lemoha tsa Perovskite li na le litšobotsi tse ntle tsa ho monya leseli le bokhoni bo sebetsang ba ho tsamaisa tjhaja, lisebelisoa tsa ho lemoha lintho tsa tlhaho li sebelisoa haholo bakeng sa lielektrone tsa tsona tse theko e tlase le tse tenyetsehang, 'me lisebelisoa tsa ho lemoha lintho tsa mahlakore a mabeli li hohetse tlhokomelo e kholo ka lebaka la thepa ea tsona e ikhethang ea 'mele le ho tsamaea ho phahameng ha carrier. Leha ho le joalo, ha li bapisoa le lisebelisoa tsa InGaAs le Si/Ge, lisebelisoa tse ncha tse hlahlobang li ntse li hloka ho ntlafatsoa mabapi le botsitso ba nako e telele, khōlo ea tlhahiso le kopanyo.

InGaAs ke e 'ngoe ea thepa e loketseng bakeng sa ho hlokomela li-photodetector tse potlakileng le tse arabelang ka potlako. Ntlha ea pele, InGaAs ke thepa ea semiconductor ea bandgap e tobileng, 'me bophara ba eona bandgap bo ka laoloa ke karolelano pakeng tsa In le Ga ho fihlella ho lemoha matšoao a optical a maqhubu a fapaneng a maqhubu. Har'a tsona, In0.53Ga0.47As e tsamaellana hantle le lattice ea substrate ea InP, 'me e na le coefficient e kholo ea ho monya leseli sehlopheng sa puisano sa optical, e leng eona e sebelisoang haholo ho lokisengli-photodetectors, 'me ts'ebetso ea motlakase o lefifi le karabelo le tsona ke tse ntle ka ho fetisisa. Ea bobeli, lisebelisoa tsa InGaAs le InP ka bobeli li na le lebelo le phahameng la ho kheloha ha lielektrone, 'me lebelo la tsona la ho kheloha ha lielektrone tse tletseng ke hoo e ka bang 1 × 107 cm/s. Ka nako e ts'oanang, lisebelisoa tsa InGaAs le InP li na le phello ea ho kheloha ha lielektrone tlas'a tšimo e itseng ea motlakase. Lebelo la ho kheloha ha lielektrone le ka aroloa ka 4 × 107cm/s le 6 × 107cm/s, e leng se thusang ho fihlela bandwidth e kholo ea nako e lekanyelitsoeng ea carrier. Hona joale, photodetector ea InGaAs ke photodetector e kholo ka ho fetisisa bakeng sa puisano ea optical, 'me mokhoa oa ho kopanya liketsahalo tsa holim'a metsi o sebelisoa haholo' marakeng, 'me lihlahisoa tsa ho lemoha liketsahalo tsa holim'a metsi tsa 25 Gbaud/s le 56 Gbaud/s li se li entsoe. Li-detector tse nyane, liketsahalo tsa morao le liketsahalo tse kholo tsa bandwidth le tsona li se li ntlafalitsoe, tse loketseng haholo-holo lits'ebetsong tsa lebelo le phahameng le ho satalla ho phahameng. Leha ho le joalo, probe ea liketsahalo tsa holim'a metsi e lekanyelitsoe ke mokhoa oa eona oa ho kopanya 'me ho thata ho e kopanya le lisebelisoa tse ling tsa optoelectronic. Ka hona, ka ntlafatso ea litlhoko tsa kopanyo ea optoelectronic, li-photodetector tsa InGaAs tse kopantsoeng le waveguide tse nang le ts'ebetso e ntle haholo le tse loketseng kopanyo li fetohile sepheo sa lipatlisiso butle-butle, tseo har'a tsona li-module tsa khoebo tsa 70 GHz le 110 GHz InGaAs photoprobe hoo e ka bang kaofela li sebelisang meaho e kopantsoeng le waveguide. Ho ea ka thepa e fapaneng ea substrate, probe ea photoelectric ea waveguide e kopantsoeng le waveguide e ka aroloa ka mekhahlelo e 'meli: InP le Si. Thepa ea epitaxial holim'a substrate ea InP e na le boleng bo holimo 'me e loketse haholoanyane bakeng sa ho lokisa lisebelisoa tse sebetsang hantle. Leha ho le joalo, ho se lumellane ho fapaneng pakeng tsa thepa ea III-V, thepa ea InGaAs le substrate tsa Si tse holisitsoeng kapa tse hokahaneng holim'a substrate tsa Si ho lebisa boleng bo bobe ba thepa kapa sebopeho, 'me ts'ebetso ea sesebelisoa e ntse e na le sebaka se seholo sa ntlafatso.