Dab tsi yog Si photodetector

Dab tsi yog ib qhoSi photodetector

Nrog rau kev txhim kho sai ntawm cov thev naus laus zis niaj hnub no, cov photodetectors, ua ib qho khoom siv sensor tseem ceeb, tau maj mam los rau hauv tib neeg lub zeem muag. Tshwj xeeb tshaj yog Si photodetector (silicon photodetector), nrog lawv cov kev ua tau zoo tshaj plaws thiab cov kev siv dav dav, tau txais kev saib xyuas dav dav. Tsab xov xwm no yuav muab cov lus piav qhia tob tob tab sis yooj yim to taub txog cov ntsiab cai yooj yim, cov yam ntxwv ntawm cov qauv, cov teb thov, thiab cov qauv kev loj hlob yav tom ntej ntawm silicon photodetectors rau txhua tus.

Lub hauv paus ntsiab lus ntawm Si photodetectors yog raws li qhov cuam tshuam photoelectric. Thaum photons ntaus cov ntaub ntawv semiconductor, cov khub electron-hole raug tsim, uas ua rau muaj hluav taws xob tam sim no. Cov ntaub ntawv Silicon muaj cov khoom nqus lub teeb zoo heev, tshwj xeeb tshaj yog nyob rau hauv cov kab pom thiab ze-infrared, thiab yog li ntawd zoo heev rau kev siv ua cov khoom siv rau photodetectors. Lub hauv paus ntsiab lus ua haujlwm ntawm Si photodetectors tuaj yeem yooj yim sau ua ntau kauj ruam: photon incidence, photon absorption, carrier generation thiab tam sim no tso zis.

Hais txog cov qauv ntawm silicon photodetectors, lawv feem ntau muab faib ua ntau qhov tseem ceeb: lub teeb txais txheej, lub nce txheej thiab lub electrode txheej. Lub teeb txais txheej yog lub luag haujlwm rau kev nqus lub teeb pom kev zoo thiab tsim cov neeg nqa khoom, thaum lub nce txheej yog siv los ua kom muaj pes tsawg tus neeg nqa khoom, yog li ua kom lub detector rhiab heev. Lub electrode txheej yog lub luag haujlwm rau kev sau cov neeg nqa khoom thiab tsim cov teeb liab tam sim no. Ib qho qauv tsim zoo tuaj yeem txhim kho kev ua tau zoo ntawm lub detector, xws li kev txhim kho kev hloov pauv photoelectric thiab txo cov suab nrov.

Cov teb ntawm daim ntawv thov ntawm silicon photodetector yog dav heev, npog ntau yam xws li kev sib txuas lus, kev thaij duab, thiab kev saib xyuas ib puag ncig. Hauv kev sib txuas lus optical, cov khoom siv silicon-based detectors yog siv los txais cov teeb liab optical thiab hloov lawv mus rau hauv cov teeb liab hluav taws xob kom ntseeg tau tias muaj kev xa cov ntaub ntawv sai. Hauv kev thaij duab, Si photodetector feem ntau siv rau hauv cov koob yees duab digital thiab webcams los pab ntes cov duab meej. Si photodetector kuj tseem siv tau rau hauv kev saib xyuas ib puag ncig, txiav txim siab txog cov xwm txheej ib puag ncig los ntawm kev saib xyuas kev hloov pauv ntawm lub teeb, xws li ntes cov pa phem.

Yav tom ntej, cov qauv kev loj hlob ntawm silicon photodetector yuav pom tseeb hauv cov hauv qab no. Kev tsim kho tshiab hauv cov ntaub ntawv xav tias yuav txhim kho kev ua tau zoo ntawm cov khoom ntes, xws li kev siv cov hlau tshiab lossis cov ntaub ntawv sib xyaw ua ke los ua kom muaj peev xwm nqus lub teeb thiab txhim kho kev ua haujlwm ntawm quantum. Kev ua kom zoo dua ntawm kev tsim qauv 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 ntawmlub tshuab ntes duabLos ntawm kev koom ua ke cov thev naus laus zis ua cov teeb liab siab heev, qhov sib piv ntawm lub teeb liab-rau-suab nrov ntawm lub tshuab ntes tuaj yeem txhim kho ntxiv, kom ntseeg tau tias nws ruaj khov hauv cov chaw nyuaj. Si photodetector, ua lub cuab yeej sensor tseem ceeb, maj mam hloov peb lub neej nrog lawv cov kev ua tau zoo heev thiab cov kev thov dav dav. Nrog rau kev nce qib tas mus li ntawm thev naus laus zis, cov duab photodetectors raws li silicon yuav ua lub luag haujlwm tseem ceeb hauv ntau qhov chaw, coj ntau txoj hauv kev rau peb yav tom ntej.