Kilikona ʻeleʻelemea nānā kiʻimooolelo: ka pono quantum waho a hiki i ka 132%
Wahi a nā hōʻike media, ua hoʻomohala nā mea noiʻi ma ke Kulanui ʻo Aalto i kahi mea optoelectronic me kahi kūpono quantum waho a hiki i ka 132%. Ua hoʻokō ʻia kēia mea hiki ʻole ma ka hoʻohana ʻana i ke silika ʻeleʻele nanostructured, hiki ke lilo i mea hoʻokūkū nui no nā cell solar a me nā mea ʻē aʻe.nā mea nānā kiʻi. Inā he 100 pākēneka ka mana kuantum o waho o kahi mea photovoltaic hypothetical, ʻo ia hoʻi, ʻo kēlā me kēia photon e paʻi iā ia e hana i kahi electron, i hōʻiliʻili ʻia e like me ka uila ma o kahi kaapuni.
A ʻaʻole hiki i kēia mea hou ke hoʻokō i ka 100 pakeneka pono, akā ʻoi aku ma mua o 100 pakeneka. 132% 'o ia ho'i ka awelika o 1.32 electrons no ka photon. Hoʻohana ia i ka silika ʻeleʻele e like me ka mea hana a he cone a me ka columnar nanostructure e hiki ke hoʻomoʻi i ke kukui ultraviolet.
ʻIke loa ʻaʻole hiki iā ʻoe ke hana i 0.32 mau electrons ʻē aʻe mai loko mai o ka ea lahilahi, ma hope o nā mea a pau, ʻōlelo ka physics ʻaʻole hiki ke hana ʻia ka ikehu mai loko mai o ka ea lahilahi, no laila mai hea mai kēia mau electrons keu?
Hele mai nā mea a pau i ke kumu hana maʻamau o nā mea photovoltaic. Ke paʻi ke kiʻi kiʻi o ke kukui i kahi mea hana, ka mea maʻamau ke silika, kikeke ia i kahi electron mai kekahi o nā mana. Akā i kekahi mau hihia, hiki i kahi photon ikaika nui ke kīkēkē i ʻelua mau electrons me ka ʻole o ka uhai ʻana i nā kānāwai o ka physics.
ʻAʻohe kānalua ʻo ka hoʻohana ʻana i kēia ʻano mea hiki ke kōkua nui i ka hoʻomaikaʻi ʻana i ka hoʻolālā ʻana o nā cell solar. I loko o nā mea optoelectronic he nui, nalowale ka hana ma nā ʻano he nui, e like me ka wā e ʻike ʻia ai nā photon mai ka hāmeʻa a i ʻole e hui hou nā electrons me nā "puka" i waiho ʻia i loko o nā ʻātoma ma mua o ka hōʻiliʻili ʻia ʻana e ke kaapuni.
Akā ʻōlelo ka hui o Aalto ua wehe nui lākou i kēlā mau pilikia. ʻOi aku ka nui o nā kiʻi kiʻi ʻeleʻele ma mua o nā mea ʻē aʻe, a ʻo nā nanostructure tapered a me columnar e hōʻemi i ka hoʻohui hou ʻana o electron ma ka ʻili o ka mea.
Ma ka holoʻokoʻa, ua hiki i kēia mau holomua ke hiki i ka quantum efficiency o waho o ka hāmeʻa a hiki i 130%. Ua hōʻoia kūʻokoʻa ʻia nā hopena o ka hui e ka National Metrology Institute o Kelemania, ka PTB (German Federal Institute of Physics).
Wahi a ka poʻe noiʻi, hiki i kēia hoʻopaʻa moʻoʻōlelo ke hoʻomaikaʻi i ka hana o kēlā me kēia photodetector, me nā pūnaewele lā a me nā mea ʻike kukui ʻē aʻe, a ke hoʻohana ʻia nei ka mea ʻike hou ma ke kālepa.
Ka manawa hoʻouna: Iulai-31-2023