Raws li lub koom haum physicists network tsis ntev los no tau tshaj tawm tias Finnish cov kws tshawb fawb tau tsim cov khoom siv dub silicon photodetector nrog kev ua haujlwm quantum sab nraud ntawm 130%, uas yog thawj zaug uas cov khoom siv hluav taws xob photovoltaic tshaj qhov theoretical txwv ntawm 100%, uas yuav tsum tau zoo heev. txhim kho kev ua tau zoo ntawm cov cuab yeej siv hluav taws xob tshawb pom, thiab cov cuab yeej no tau siv dav hauv tsheb, xov tooj ntawm tes, smart watches thiab khoom siv kho mob.
Lub photodetector yog ib tug sensor uas ntsuas lub teeb los yog lwm yam electromagnetic zog, hloov photons rau hauv ib tug hluav taws xob tam sim no, thiab cov absorbed photons tsim electron-qhov khub. Lub photodetector muaj xws li photodiode thiab phototransistor, thiab lwm yam. Quantum efficiency yog siv los txhais cov feem pua ntawm photons tau txais los ntawm ib tug ntaus ntawv xws li ib tug photodetector rau hauv ib tug electron-qhov khub, uas yog, lub quantum efficiency yog sib npaug zos rau tus naj npawb ntawm photogenerated electrons faib los ntawm tus naj npawb ntawm qhov xwm txheej photons.
Thaum ib qho teeb meem photon tsim ib qho hluav taws xob rau ib qho hluav taws xob sab nraud, qhov kev ua haujlwm sab nraud ntawm lub cuab yeej yog 100% (yav dhau los xav tias yog qhov kev txwv theoretical). Nyob rau hauv txoj kev tshawb no tshiab, lub dub silicon photodetector muaj ib tug efficiency txog li 130 feem pua, uas txhais tau hais tias ib tug tshwm sim photon tsim txog 1.3 electrons.
Raws li Aalto University cov kws tshawb fawb, cov riam phom zais cia tom qab qhov kev ua txhaum loj no yog cov txheej txheem kev sib txuas ntawm tus nqi uas tshwm sim nyob rau hauv lub cim nanostructure ntawm dub silicon photodetector, uas yog tshwm sim los ntawm high-zog photons. Yav dhau los, cov kws tshawb fawb tsis tuaj yeem soj ntsuam qhov tshwm sim hauv cov khoom siv tiag tiag vim tias qhov muaj hluav taws xob thiab qhov muag pom tau txo qis cov electrons khaws cia. "Peb cov khoom siv nanostructured tsis muaj recombination thiab tsis muaj kev xav tsis zoo, yog li peb tuaj yeem sau tag nrho cov neeg nqa khoom sib npaug," piav qhia tus thawj coj ntawm kev tshawb fawb xibfwb Hera Severn.
Qhov kev ua tau zoo no tau raug txheeb xyuas los ntawm Lub Tsev Haujlwm Saib Xyuas Kev Siv Lub Cev ntawm German National Metrology Society (PTB), qhov kev ntsuas qhov tseeb thiab txhim khu kev qha tshaj plaws hauv Tebchaws Europe.
Cov kws tshawb fawb tau sau tseg tias qhov kev ua haujlwm ntawm cov ntaub ntawv no txhais tau hais tias cov kws tshawb fawb tuaj yeem txhim kho kev ua tau zoo ntawm cov khoom siv hluav taws xob tshawb pom.
Dr. Mikko Juntuna, CEO ntawm ElfysInc, ib lub tuam txhab muaj los ntawm Aalto University hais tias "Peb cov cuab yeej kuaj tau tsim muaj kev txaus siab, tshwj xeeb tshaj yog nyob rau hauv thaj chaw ntawm biotechnology thiab kev soj ntsuam cov txheej txheem kev lag luam. Nws tau tshaj tawm tias lawv tau pib tsim cov cuab yeej no rau kev lag luam siv.
Post lub sij hawm: Lub Xya hli ntuj-11-2023