Uphando olutsha malunga neenwele ezincinci kakhuluIsixhobo sokubona iifoto se-InGaAs
Ukuqhubela phambili kwetekhnoloji yokufota nge-infrared yamaza amafutshane (i-SWIR) kube negalelo elikhulu kwiinkqubo zokubona ebusuku, ukuhlolwa kwemizi-mveliso, uphando lwesayensi, kunye nokhuseleko lokhuseleko kunye neminye imimandla. Njengoko imfuno yokufunyanwa isanda ngaphaya kwe-spectrum yokukhanya okubonakalayo, uphuhliso lwezinzwa zemifanekiso ye-infrared yamaza amafutshane nalo lukhula rhoqo. Nangona kunjalo, ukufikelela kwisisombululo esiphezulu kunye nengxolo ephantsi.isixhobo sokubona ifoto esineespectrum ezibanziisajongene nemingeni emininzi yobuchwephesha. Nangona i-InGaAs short-wave infrared photodetector yendabuko inokubonisa ukusebenza kakuhle kokuguqulwa kwe-photoelectric kunye nokuhamba kwe-carrier, kukho ukuphikisana okubalulekileyo phakathi kwezalathisi zokusebenza eziphambili kunye nolwakhiwo lwesixhobo. Ukuze ufumane ukusebenza okuphezulu kwe-quantum (QE), uyilo oluqhelekileyo lufuna umaleko wokufunxa (AL) wee-micrometer ezi-3 okanye ngaphezulu, kwaye olu yilo lwesakhiwo lukhokelela kwiingxaki ezahlukeneyo.
Ukuze kuncitshiswe ubukhulu bomaleko wokufunxa (TAL) kwi-InGaAs short-wave infraredisixhobo sokubona iifoto, ukuhlawula ukunciphisa ukufunxwa kwiiwavelength ezinde kubalulekile, ingakumbi xa ubukhulu bomaleko wokufunxwa kwindawo encinci bukhokelela ekufunxweni okwaneleyo kuluhlu lobude bomaleko. Umfanekiso 1a ubonisa indlela yokuhlawula ubukhulu bomaleko wokufunxwa kwindawo encinci ngokwandisa indlela yokufunxwa kwe-optical. Olu phononongo luphucula ukusebenza kakuhle kwe-quantum (QE) kwi-short-wave infrared band ngokwazisa isakhiwo se-TiOx/Au-based guided mode resonance (GMR) kwicala elingasemva lesixhobo.
Xa kuthelekiswa nezakhiwo zesiqhelo ze-planar metal reflection, isakhiwo se-guided mode resonance sinokuvelisa iziphumo ezininzi ze-resonance absorption, nto leyo eyandisa kakhulu ukusebenza kakuhle kwe-absorption kokukhanya kwe-long-wave length. Abaphandi baphucule uyilo lwe-key parameter yesakhiwo se-guided mode resonance, kubandakanya ixesha, ukwakheka kwezinto, kunye ne-filling factor, ngendlela ye-strigorid coupled-wave analysis (RCWA). Ngenxa yoko, esi sixhobo sisagcina ukufunxwa okusebenzayo kwi-short-wave infrared band. Ngokusebenzisa iingenelo zezinto ze-InGaAs, abaphandi baphinde bahlola impendulo ye-spectral ngokuxhomekeke kwisakhiwo se-substrate. Ukwehla kobukhulu bomaleko wokufunxwa kufuneka kuhambisane nokuncipha kwe-EQE.
Ukuqukumbela, olu phando luphumelele ekuphuhliseni isixhobo sokubona i-InGaAs esinobukhulu obuyi-0.98 micrometers kuphela, esincinci ngokuphindwe kabini kunesakhiwo sendabuko. Kwangaxeshanye, sigcina ukusebenza kakuhle kwe-quantum okungaphezulu kwe-70% kuluhlu lwamaza obude obuyi-400-1700 nm. Impumelelo ye-InGaAs photodetector ebhityileyo kakhulu ibonelela ngendlela entsha yobugcisa yophuhliso lwezixhobo zomfanekiso ezibanzi ezinesisombululo esiphezulu, ezinengxolo ephantsi. Ixesha lokuthuthwa ngokukhawuleza kwenkampani eliziswa luyilo lwesakhiwo esibhityileyo kakhulu kulindeleke ukuba linciphise kakhulu i-crosstalk yombane kwaye liphucule iimpawu zempendulo zesixhobo. Kwangaxeshanye, isakhiwo sesixhobo esincitshisiweyo sifanelekile ngakumbi kwitekhnoloji yokudibanisa i-single-chip three-dimensional (M3D), sibeka isiseko sokufezekisa ii-pixel arrays eziphezulu.
Ixesha leposi: Februwari-24-2026