Wahi a ka pūnaewele o ka hui physicists i hōʻike koke aku nei ua hoʻomohala nā kānaka noiʻi Finnish i kahi photodetector silicon ʻeleʻele me ka pono quantum waho o 130%, ʻo ia ka manawa mua i ʻoi aku ai ka pono o nā mea photovoltaic ma mua o ka palena theoretical o 100%, ka mea i manaʻo ʻia e hoʻomaikaʻi nui i ka pono o nā mea ʻike photoelectric, a hoʻohana nui ʻia kēia mau mea i nā kaʻa, nā kelepona paʻalima, nā uaki akamai a me nā lako lapaʻau.
ʻO ka photodetector kahi sensor e hiki ke ana i ka mālamalama a i ʻole ka ikehu electromagnetic ʻē aʻe, hoʻololi i nā photons i loko o ke au uila, a ʻo nā photons i hoʻopili ʻia e hana i nā hui electron-hole. Loaʻa i ka photodetector ka photodiode a me ka phototransistor, a pēlā aku. Hoʻohana ʻia ka pono quantum e wehewehe i ka pakeneka o nā photons i loaʻa e kahi mea e like me ka photodetector i loko o kahi hui electron-hole, ʻo ia hoʻi, ua like ka pono quantum me ka helu o nā electrons photogenerated i puʻunaue ʻia e ka helu o nā photons hanana.
Ke hoʻopuka kahi photon i kahi electron i kahi kaapuni waho, ʻo ka pono quantum waho o ka hāmeʻa he 100% (i manaʻo mua ʻia ʻo ia ka palena kumumanaʻo). Ma ke noiʻi hou loa, ua loaʻa i ka photodetector silicon ʻeleʻele kahi pono a hiki i ka 130 pakeneka, ʻo ia hoʻi, hoʻopuka kekahi photon i kahi 1.3 mau electrons.
Wahi a nā kānaka noiʻi o ke Kulanui ʻo Aalto, ʻo ka mea kaua huna ma hope o kēia holomua nui, ʻo ia ke kaʻina hana hoʻonui ʻana o ka mea lawe ukana e hana ʻia ana i loko o ka nanostructure kū hoʻokahi o ka photodetector silicon ʻeleʻele, kahi i hoʻāla ʻia e nā photons ikehu kiʻekiʻe. Ma mua, ʻaʻole hiki i nā kānaka ʻepekema ke nānā i ka hanana i nā mea hana maoli no ka mea ʻo ke alo o nā pohō uila a me ka optical i hōʻemi i ka nui o nā electrons i hōʻiliʻili ʻia. "ʻAʻohe recombination a ʻaʻohe pohō noʻonoʻo o kā mākou mau mea nanostructured, no laila hiki iā mākou ke hōʻiliʻili i nā mea lawe ukana i hoʻonui ʻia," wahi a ke alakaʻi noiʻi ʻo Polofesa Hera Severn.
Ua hōʻoia ʻia kēia pono e ka Institute of Physical Technology of the German National Metrology Society (PTB), ka lawelawe ana pololei a hilinaʻi hoʻi ma ʻEulopa.
Ua hoʻomaopopo nā kānaka noiʻi ʻo kēia pono hoʻopaʻa moʻolelo ʻo ia hoʻi hiki i nā kānaka ʻepekema ke hoʻomaikaʻi nui i ka hana o nā mea ʻike photoelectric.
"Ua hoʻoulu kā mākou mau mea ʻike i ka nui o ka hoihoi, ʻoi aku hoʻi ma nā wahi o ka biotechnology a me ka nānā ʻana i nā kaʻina hana ʻoihana," wahi a Kauka Mikko Juntuna, Luna Nui o ElfysInc, kahi ʻoihana nona ke Kulanui ʻo Aalto. Ua hōʻike ʻia ua hoʻomaka lākou e hana i kēlā mau mea ʻike no ka hoʻohana ʻana i ke kālepa.
Ka manawa hoʻouna: Iulai-11-2023