Ho ea ka marang-rang a mokhatlo oa litsebi tsa fisiks e sa tsoa tlaleha hore bafuputsi ba Mafinnishe ba thehile mochine o motšo oa silicon photodetector o nang le bokhoni ba ka ntle ba 130%, e leng lekhetlo la pele hore katleho ea lisebelisoa tsa photovoltaic e feta moeli oa khopolo ea 100%, e lebeletsoeng haholo. ntlafatsa bokhoni ba lisebelisoa tsa ho bona motlakase oa lifoto, 'me lisebelisoa tsena li sebelisoa haholo likoloing, mehala ea thekeng, lioache tse bohlale le thepa ea bongaka.
Photodetector ke kutlo e ka methang khanya kapa matla a mang a motlakase, ea fetolela li-photon hore e be motlakase, 'me li-photon tse nkiloeng li etsa lipara tsa electron-hole. Photodetector e kenyeletsa photodiode le phototransistor, joalo-joalo. Ho sebetsa hantle ha Quantum ho sebelisoa ho hlalosa peresente ea photons e amoheloang ke sesebelisoa se kang photodetector ka har'a para ea electron-hole, ke hore, katleho ea quantum e lekana le palo ea li-electrone tse entsoeng ka lifoto tse arotsoeng ka palo ea lifoto tsa liketsahalo.
Ha photon ea ketsahalo e hlahisa elektrone ho potoloho e ka ntle, katleho ea quantum e ka ntle ea sesebelisoa ke 100% (eo pele e neng e nahanoa hore ke moeli oa theory). Phuputsong ea morao-rao, mochine o motšo oa silicon o bile le bokhoni ba ho fihla ho karolo ea 130 lekholong, ho bolelang hore ketsahalo e le 'ngoe ea photon e hlahisa li-electrone tse ka bang 1.3.
Ho ea ka bafuputsi ba Univesithi ea Aalto, sebetsa sa lekunutu se ka morao ho katleho ena e kholo ke ts'ebetso ea ho atisa batho ba qosang e hlahang ka har'a nanostructure e ikhethang ea silicon photodetector e ntšo, e hlahisoang ke li-photon tse matla haholo. Nakong e fetileng, bo-rasaense ba ne ba sa khone ho bona ketsahalo ena ka lisebelisoa tsa sebele hobane ho ba teng ha tahlehelo ea motlakase le ea mahlo ho fokolitse palo ea li-electrone tse bokelitsoeng. "Lisebelisoa tsa rona tsa nanostructured ha li na recombination ebile ha li na tahlehelo ea ho bonahatsa, kahoo re ka bokella bajari bohle ba atisang ho lefa," ho hlalositse moetapele oa thuto Moprofesa Hera Severn.
Bokhoni bona bo netefalitsoe ke Setsi sa Theknoloji ea 'Mele ea Jeremane National Metrology Society (PTB), e leng tšebeletso ea tekanyo e nepahetseng le e tšepahalang ka ho fetisisa Europe.
Bafuputsi ba hlokometse hore ts'ebetso ena ea rekoto e bolela hore bo-ramahlale ba ka ntlafatsa haholo ts'ebetso ea lisebelisoa tsa ho bona tsa photoelectric.
"Li-detectors tsa rona li hlahisitse thahasello e kholo, haholo-holo libakeng tsa biotechnology le ts'ebetso ea ts'ebetso ea indasteri," ho boletse Dr. Mikko Juntuna, CEO oa ElfysInc, k'hamphani ea Aalto University. Ho tlalehoa hore ba se ba qalile ho etsa li-detectors tse joalo bakeng sa tšebeliso ea khoebo.
Nako ea poso: Jul-11-2023