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

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

Li-photodetectors tsa lebelo le phahamenglebaleng la puisano ea optical haholo-holo e kenyelletsa III-V InGaAs photodetectors le IV e tletseng Si le Ge/Ke li-photodetectors. Ea pele ke ea setso e haufi le infrared detector, e 'nileng ea e-ba matla ka nako e telele, ha ea morao-rao e 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, li-detectors tse ncha tse thehiloeng holim'a perovskite, lihlahisoa tsa manyolo le tse peli li ntse li tsoela pele ka potlako ka lebaka la melemo ea ho sebetsa habonolo, ho feto-fetoha ha maemo le thepa ea tunable. Ho na le phapang e kholo lipakeng tsa li-detectors tsena tse ncha le li-photodetectors tsa setso tsa inorganic ka thepa le lits'ebetso tsa tlhahiso. Li-detectors tsa Perovskite li na le litšobotsi tse babatsehang tsa ho monya leseli le matla a ho tsamaisa lipalangoang, lisebelisoa tsa lihlahisoa tsa tlhaho li sebelisoa haholo bakeng sa li-elektronike tse theko e tlaase le tse feto-fetohang, 'me lisebelisoa tse nang le likarolo tse peli li hapile tlhokomelo e kholo ka lebaka la thepa ea tsona e ikhethang ea' mele le ho tsamaea ha thepa e phahameng. Leha ho le joalo, ha ho bapisoa le li-detectors tsa InGaAs le Si/Ge, li-detectors tse ncha li ntse li hloka ho ntlafatsoa mabapi le botsitso ba nako e telele, kholo ea tlhahiso le ho kopanya.

InGaAs ke e 'ngoe ea lisebelisoa tse loketseng ho lemoha li-photodetectors tsa lebelo le phahameng. Ntlha ea pele, InGaAs ke thepa e tobileng ea semiconductor ea bandgap, 'me bophara ba eona ba bandgap bo ka laoloa ke karo-karolelano pakeng tsa In le Ga ho finyella ho fumanoa ha lipontšo tsa optical tsa wavelengths tse fapaneng. Har'a tsona, In0.53Ga0.47As e tsamaisana hantle le substrate lattice ea InP, 'me e na le coefficient e kholo ea ho monya leseli ho sehlopha sa puisano sa optical, e leng eona e sebelisoang haholo ho lokisengli-photodetectors, 'me ts'ebetso e lefifi ea hona joale le ea karabelo e boetse e molemo ka ho fetisisa. Taba ea bobeli, lisebelisoa tsa InGaAs le InP ka bobeli li na le lebelo le phahameng la ho hoholeha ha elektronike, 'me lebelo la tsona la ho hoholeha ha elektronike ke 1 × 107 cm/s. Ka nako e ts'oanang, lisebelisoa tsa InGaAs le InP li na le phello ea electron velocity overshoot tlas'a tšimo e itseng ea motlakase. Lebelo la overshoot le ka aroloa ka 4 × 107cm / s le 6 × 107cm / s, e leng se loketseng ho lemoha lebelo le leholo la nako ea ho tsamaisa nako. Hona joale, InGaAs photodetector ke eona e ka sehloohong ea photodetector bakeng sa puisano ea optical, 'me mokhoa oa ho kopanya liketsahalo tsa holimo o sebelisoa haholo' marakeng, 'me lihlahisoa tsa 25 Gbaud / s le 56 Gbaud / s li se li lemohuoe. Boholo bo bonyenyane, liketsahalo tsa morao-rao le lisebelisoa tse kholo tsa bandwidth surface detectors le tsona li ntlafalitsoe, tse loketseng haholo-holo bakeng sa lisebelisoa tse phahameng tsa lebelo le phahameng. Leha ho le joalo, probe ea ketsahalo e ka holimo e lekanyelitsoe ke mokhoa oa eona oa ho kopanya 'me ho thata ho kopanya le lisebelisoa tse ling tsa optoelectronic. Ka hona, ka ntlafatso ea litlhoko tsa kopanyo ea optoelectronic, li-waveguide tse kopantsoeng le InGaAs photodetectors tse nang le ts'ebetso e babatsehang le tse loketseng ho kopanngoa butle-butle li fetohile sepheo sa lipatlisiso, tseo har'a tsona 70 GHz le 110 GHz InGaAs photoprobe modules hoo e ka bang kaofela li sebelisa mekhoa e kopantsoeng ea waveguide. Ho latela lisebelisoa tse fapaneng tsa substrate, waveguide coupling InGaAs photoelectric probe e ka aroloa ka mekhahlelo e 'meli: InP le Si. Thepa ea epitaxial ho InP substrate e na le boleng bo holimo mme e loketse ho lokisoa ha lisebelisoa tse sebetsang hantle. Leha ho le joalo, mefuta e fapa-fapaneng e sa lumellaneng pakeng tsa lisebelisoa tsa III-V, lisebelisoa tsa InGaAs le li-substrates tsa Si tse hōlileng kapa tse tlamisoang ho Si substrates li lebisa ho thepa e fokolang kapa boleng ba sebopeho, 'me tshebetso ea sesebelisoa e ntse e na le kamore e kholo ea ntlafatso.