Dab tsi yog aYog photodetector
Nrog txoj kev loj hlob sai ntawm cov cuab yeej siv niaj hnub no, photodetectors, uas yog ib qho tseem ceeb ntawm cov cuab yeej sensor, tau maj mam nkag mus rau hauv tib neeg txoj kev pom. Tshwj xeeb tshaj yog Si photodetector (silicon photodetector), nrog rau lawv cov kev ua tau zoo tshaj plaws thiab kev siv dav dav, tau txais kev saib xyuas dav. Kab lus no yuav muab cov lus piav qhia qhov tob tsis tau yooj yim rau kev nkag siab ntawm cov hauv paus ntsiab lus, cov yam ntxwv ntawm cov qauv, daim ntawv thov, thiab kev txhim kho yav tom ntej ntawm silicon photodetectors rau txhua tus.
Lub hauv paus ntsiab lus ntawm Si photodetectors yog ua raws li cov nyhuv photoelectric. Thaum photons tawm tsam cov khoom siv hluav taws xob, cov khoom siv hluav taws xob-qhov yog tsim, uas ua rau muaj hluav taws xob tam sim no. Silicon cov ntaub ntawv muaj cov khoom siv lub teeb pom kev zoo, tshwj xeeb tshaj yog nyob rau hauv qhov pom thiab nyob ze-infrared bands, thiab yog li tsim nyog rau siv los ua cov khoom siv rau cov duab thaij duab. Lub hauv paus ntsiab lus ua haujlwm ntawm Si photodetectors tuaj yeem muab faib ua ob peb kauj ruam: photon tshwm sim, photon absorption, tiam neeg nqa khoom thiab cov zis tam sim no.
Nyob rau hauv cov nqe lus ntawm cov qauv ntawm silicon photodetectors, lawv feem ntau muab faib ua ob peb yam tseem ceeb: lub teeb tau txais txheej, nce txheej thiab electrode txheej. Lub teeb tau txais txheej yog lub luag hauj lwm rau absorbing teeb meem teeb meem thiab tsim cov cab kuj, thaum lub nce txheej yog siv los mus nce tus naj npawb ntawm cov cab kuj, li no pab txhawb lub rhiab heev ntawm lub detector. Cov txheej electrode yog lub luag haujlwm rau kev sau cov khoom thauj thiab tsim cov cim tam sim no. Cov qauv tsim tau zoo tuaj yeem txhim kho qhov kev ua tau zoo ntawm lub tshuab ntes, xws li kev txhim kho lub photoelectric conversion efficiency thiab txo cov suab nrov.
Daim ntawv thov teb ntawm silicon photodetector yog dav heev, npog ntau yam xws li kev sib txuas lus, duab, thiab kev saib xyuas ib puag ncig. Hauv kev sib txuas lus kho qhov muag, silicon-based detectors yog siv los txais cov teeb liab kho qhov muag thiab hloov mus rau hauv cov teeb liab hluav taws xob kom ntseeg tau tias cov ntaub ntawv xa mus sai. Hauv kev yees duab, Si photodetector feem ntau siv hauv cov koob yees duab digital thiab webcams los pab ntes cov duab meej. Si photodetector kuj tuaj yeem siv rau hauv kev saib xyuas ib puag ncig, txiav txim siab ib puag ncig los ntawm kev saib xyuas cov kev hloov hauv lub teeb, xws li kuaj pom muaj cov pa phem.
Nyob rau hauv lub neej yav tom ntej, txoj kev loj hlob tiam sis ntawm silicon photodetector feem ntau yuav tshwm sim nyob rau hauv cov nram qab no yam. Kev tsim kho tshiab hauv cov ntaub ntawv yuav tsum txhim kho kev ua haujlwm ntawm cov cuab yeej ntsuas, xws li kev siv cov khoom siv tshiab lossis cov khoom sib xyaw kom muaj peev xwm nqus tau lub teeb thiab txhim kho quantum efficiency. Kev ua kom zoo ntawm cov qauv tsim kuj yog ib qho kev taw qhia tseem ceeb. Los ntawm kev siv tshuab microfabrication, miniaturization thiab kev koom ua ke tuaj yeem ua tiav los txhim kho qhov rhiab heev thiab kev teb ceev ntawmphotodetector. Los ntawm kev sib koom ua ke cov teeb liab ua tiav technology, lub teeb liab-rau-suab nrov piv ntawm tus ntes tuaj yeem txhim kho ntxiv, ua kom nws ruaj khov nyob rau hauv ib puag ncig nyuaj. Si photodetector, raws li ib qho tseem ceeb ntawm cov cuab yeej sensor, yog maj mam hloov peb lub neej nrog lawv cov kev ua tau zoo heev thiab dav daim ntawv thov kev cia siab. Nrog rau kev nce qib ntawm kev siv thev naus laus zis tas li, silicon-based photodetectors yuav ua lub luag haujlwm tseem ceeb hauv ntau thaj chaw, ua rau muaj peev xwm ntxiv rau peb lub neej yav tom ntej.
Post lub sij hawm: Sep-01-2025