Patlisiso e Ncha mabapi le Photodetector ea Avalanche ea boemo bo tlase
Ho lemoha ka kutloisiso e phahameng ea theknoloji ea photon tse fokolang kapa esita le ea photon e le 'ngoe ho na le menyetla e kholo ea ts'ebeliso likarolong tse kang litšoantšo tse fokolang, ho lemoha ka thōko le telemetry, hammoho le puisano ea quantum. Har'a bona, li-avalanche photodetectors (APD) li fetohile tataiso ea bohlokoa lefapheng la lipatlisiso tsa lisebelisoa tsa optoelectronic ka lebaka la boholo ba tsona bo fokolang, bokhoni bo phahameng le ho kopanya habonolo. Signal-to-noise ratio (SNR) ke sesupo sa bohlokoa sa APD Photodetector, se hlokang phaello e phahameng le lefifi le lefifi la hona joale. Patlisiso mabapi le li-heterojunctions tse mahlakore a mabeli (2D) van der Waals li bonts'a litebello tse batsi ho nts'etsopele ea li-APD tsa ts'ebetso e phahameng. Bafuputsi ba tsoang Chaena ba khethile lisebelisoa tsa bipolar tse peli-dimensional semiconductor WSe₂ e le thepa ea lifoto 'me ba lokisetsa ka hloko sebopeho sa Pt/WSe₂/Ni.APD Photodetectorka ts'ebetso e ntle e ts'oanang ea mosebetsi ho rarolla bothata ba lerata ba APD ea setso.
Bafuputsi ba hlahisitse tlhahiso eaAvalanche photodetectore ipapisitse le sebopeho sa Pt/WSe₂/Ni, ho fihlela ho lemoha ha bobebe mats'oao a khanya a fokolang haholo maemong a fW mocheso oa kamore. Ba khethile thepa ea semiconductor ea mahlakore a mabeli a WSe₂, e nang le thepa e ntle ea motlakase, 'me e kopantsoe le lisebelisoa tsa Pt le Ni electrode ho atleha ho hlahisa mofuta o mocha oa avalanche photodetector. Ka ho ntlafatsa ka nepo ts'ebetso ea ts'ebetso e ts'oanang har'a Pt, WSe₂ le Ni, mochini oa lipalangoang o entsoe o ka thibelang bajari ba lefifi ka mokhoa o ikhethileng o lumella bajari ba lifoto hore ba fete. Mochine ona o fokotsa haholo lerata le feteletseng le bakoang ke ionization ea mokhanni, e leng se nolofalletsang photodetector ho finyella ho lemoha ha matšoao a mahlo a phahameng ka ho fetisisa ka lerata le tlaase haholo.
Boithuto bona bo bonts'a karolo ea bohlokoa ea boenjineri ba lisebelisoa le ntlafatso ea sebopeho ho ntlafatsa ts'ebetso eali-photodetectors. Ka moralo o bohlale oa li-electrode le lisebelisoa tse nang le mahlakore a mabeli, phello ea tšireletso ea bajari ba lefifi e ile ea finyelloa, ho fokotsa haholo tšitiso ea lerata le ho tsoela pele ho ntlafatsa katleho ea ho lemoha. Ts'ebetso ea sesebelisoa sena ha e bonahale feela ka litšobotsi tsa eona tsa photoelectric, empa hape e na le tebello e pharaletseng ea ts'ebeliso. Ka thibelo ea eona e sebetsang ea mocheso o lefifi mocheso oa kamore le ho monya hantle ha bajari ba photogenerated, photodetector ena e loketse ka ho khetheha bakeng sa ho lemoha matšoao a fokolang a leseli libakeng tse kang ho hlahloba tikoloho, ho shebella linaleli le puisano ea optical. Katleho ena ea lipatlisiso ha e fane feela ka maikutlo a macha bakeng sa nts'etsopele ea li-photodetectors tsa thepa e tlaase, empa e boetse e fana ka litšupiso tse ncha bakeng sa lipatlisiso tsa nako e tlang le nts'etsopele ea lisebelisoa tsa optoelectronic tse sebetsang hantle le tse tlaase.
Nako ea poso: Aug-27-2025