Ngokutsho kwenethiwekhi yemibutho yefiziksi kutshanje, abaphandi baseFinland bavelise isixhobo sokubona ifoto sesilicon esimnyama esinokusebenza kwe-quantum yangaphandle esiyi-130%, eli lixesha lokuqala ukuba ukusebenza kwezixhobo ze-photovoltaic kudlule umda wethiyori we-100%, okulindeleke ukuba kuphucule kakhulu ukusebenza kwezixhobo zokubona i-photoelectric, kwaye ezi zixhobo zisetyenziswa kakhulu kwiimoto, iifowuni eziphathwayo, iiwotshi ezikrelekrele kunye nezixhobo zonyango.
I-photodetector sisixhobo sokuvavanya ukukhanya okanye amanye amandla e-electromagnetic, siguqule ii-photons zibe ngumbane, kwaye ii-photons ezifunxiweyo zenze ii-electron-hole pairs. I-photodetector ibandakanya i-photodiode kunye ne-phototransistor, njl. Ukusebenza kakuhle kwe-Quantum kusetyenziswa ukuchaza ipesenti yee-photons ezifunyenwe sisixhobo esifana ne-photodetector zibe zi-electron-hole pair, oko kukuthi, ukusebenza kakuhle kwe-quantum kulingana nenani lee-electrons eziveliswa yi-photon ezahlulwe ngenani lee-photons zesiganeko.
Xa i-incident photon ivelisa i-electron kwi-external circuit, ukusebenza kakuhle kwe-quantum yangaphandle yesixhobo yi-100% (eyayicingelwa ukuba ngumda wethiyori ngaphambili). Kuphononongo lwamva nje, i-black silicon photodetector yayisebenza kakuhle ukuya kuthi ga kwi-130 ekhulwini, oko kuthetha ukuba i-incident photon enye ivelisa malunga ne-1.3 electrons.
Ngokutsho kwabaphandi beYunivesithi yaseAalto, isixhobo esiyimfihlo emva kolu phuculo lukhulu yinkqubo yokuphindaphinda komthwali wetshaja eyenzeka ngaphakathi kwesakhiwo esikhethekileyo se-nanostructure ye-black silicon photodetector, esibangelwa zii-photons ezinamandla aphezulu. Ngaphambili, izazinzulu bezingakwazi ukubona le nto kwizixhobo zokwenyani kuba ubukho bokulahleka kombane kunye nokukhanya kunciphisa inani lee-elektroni eziqokelelweyo. “Izixhobo zethu ze-nanostructure azina-recombination kwaye azinalahleko yokubonakalisa, ngoko ke singaqokelela zonke ii-charge carriers eziphindaphindeneyo,” ucacise inkokeli yophando uNjingalwazi Hera Severn.
Olu buchule luqinisekiswe yi-Institute of Physical Technology ye-German National Metrology Society (PTB), eyona nkonzo yokulinganisa echanekileyo nethembekileyo eYurophu.
Abaphandi baqaphela ukuba olu lwazi lusebenza kakuhle luthetha ukuba izazinzulu zinokuyiphucula kakhulu indlela ezisebenza ngayo izixhobo zokubona umbane.
“Ii-detector zethu zibangele umdla omkhulu, ingakumbi kwicandelo le-biotechnology kunye nokubeka esweni inkqubo yemizi-mveliso,” utshilo uGqr. Mikko Juntuna, i-CEO ye-ElfysInc, inkampani ephethwe yiYunivesithi yase-Aalto. Kubikwa ukuba baqalile ukuvelisa ezi -detector ukuze zisetyenziswe kwezorhwebo.
Ixesha lokuthumela: Julayi-11-2023