Raws li lub koom haum physicists network nyuam qhuav tshaj tawm tias cov kws tshawb fawb Finnish tau tsim lub tshuab photodetector dub silicon nrog lub zog quantum sab nraud ntawm 130%, uas yog thawj zaug uas qhov ua tau zoo ntawm cov khoom siv photovoltaic tshaj qhov kev txwv theoretical ntawm 100%, uas xav tias yuav txhim kho qhov ua tau zoo ntawm cov khoom siv photoelectric detection, thiab cov khoom siv no tau siv dav hauv tsheb, xov tooj ntawm tes, smart watches thiab cov khoom siv kho mob.
Lub photodetector yog ib lub sensor uas ntsuas tau lub teeb lossis lwm yam zog electromagnetic, hloov cov photons mus ua hluav taws xob, thiab cov photons uas nqus tau los ua cov khub electron-hole. Lub photodetector muaj xws li photodiode thiab phototransistor, thiab lwm yam. Quantum efficiency yog siv los txhais feem pua ntawm cov photons tau txais los ntawm lub cuab yeej xws li lub photodetector mus ua khub electron-hole, uas yog, qhov quantum efficiency yog sib npaug rau tus naj npawb ntawm cov electrons photogenerated faib los ntawm tus naj npawb ntawm cov photons tshwm sim.
Thaum ib lub photon tshwm sim tsim ib lub electron rau ib lub voj voog sab nraud, qhov ua tau zoo ntawm lub cuab yeej yog 100% (yav dhau los xav tias yog qhov txwv theoretical). Hauv kev tshawb fawb tshiab, lub black silicon photodetector muaj qhov ua tau zoo txog li 130 feem pua, uas txhais tau tias ib lub photon tshwm sim tsim tau txog li 1.3 electrons.
Raws li cov kws tshawb fawb ntawm Aalto University, riam phom zais cia tom qab qhov kev tshawb pom tseem ceeb no yog cov txheej txheem sib ntxiv ntawm cov nqi them uas tshwm sim hauv cov qauv nanostructure ntawm lub tshuab ntsuas duab silicon dub, uas yog ua los ntawm cov photons muaj zog siab. Yav dhau los, cov kws tshawb fawb tsis tau pom qhov xwm txheej no hauv cov khoom siv tiag tiag vim tias qhov muaj kev poob hluav taws xob thiab kev pom kev txo cov electrons uas tau sau. "Peb cov khoom siv nanostructured tsis muaj kev sib xyaw ua ke thiab tsis muaj kev poob ntawm kev cuam tshuam, yog li peb tuaj yeem sau tag nrho cov nqi them sib ntxiv," tus thawj coj kev tshawb fawb Professor Hera Severn piav qhia.
Qhov kev ua tau zoo no tau raug lees paub los ntawm Lub Tsev Kawm Ntawv ntawm Lub Cev Tshuab ntawm German National Metrology Society (PTB), qhov kev pabcuam ntsuas qhov tseeb thiab txhim khu kev qha tshaj plaws hauv Tebchaws Europe.
Cov kws tshawb nrhiav tau hais tias qhov kev ua tau zoo no txhais tau tias cov kws tshawb fawb tuaj yeem txhim kho kev ua tau zoo ntawm cov khoom siv nrhiav pom photoelectric.
"Peb cov khoom siv kuaj tau ua rau muaj kev txaus siab ntau, tshwj xeeb tshaj yog nyob rau hauv thaj chaw ntawm biotechnology thiab kev soj ntsuam cov txheej txheem kev lag luam," Dr. Mikko Juntuna, CEO ntawm ElfysInc, ib lub tuam txhab uas Aalto University muaj. Muaj kev tshaj tawm tias lawv tau pib tsim cov khoom siv kuaj no rau kev siv lag luam.
Lub sijhawm tshaj tawm: Lub Xya Hli-11-2023