Te whakahaere-ā-whaiaro mahi-teiteipūoko whakaahua whero-whero
pūwero-wheropūoko whakaahuaHe āhuatanga tōna, arā, he kaha ki te ārai i te pokanoa, he kaha ki te kite i ngā whāinga, he pai te mahi i ngā āhuarangi katoa, ā, he pai hoki te huna. Kei te piki haere te hiranga o tana mahi i roto i ngā mara pēnei i te rongoā, te hōia, te hangarau ātea me te hangarau taiao. I roto i ēnei, ko te mea e whakahaere ana i a ia anō.te kimi hiko-whakaahuaKo te maramara ka taea te mahi motuhake me te kore he pūtake hiko tāpiri o waho kua aro nui ki te ao o te kimi i te infrared nā tōna mahi ahurei (pēnei i te motuhake o te pūngao, te aro nui me te pumau, me ētahi atu). He rerekē, ko ngā maramara kimi photoelectric tuku iho, pērā i ngā maramara infrared e hangai ana ki te silicon, ki te semiconductor-aputa rānei, ehara i te mea me tāpiri atu ngā ngaohiko whakahāngai hei akiaki i te wehenga o ngā kaikawe whakaahua hei whakaputa i ngā iahiko whakaahua, engari me tāpiri atu hoki ngā pūnaha whakamatao hei whakaiti i te haruru wera me te whakapai ake i te urupare. Nō reira, kua uaua ki te whakatutuki i ngā ariā me ngā whakaritenga hou o te whakatupuranga hou o ngā maramara kimi infrared ā muri ake nei, pērā i te iti o te kai hiko, te iti o te rahi, te iti o te utu me te mahi nui.
Nō nā tata nei, kua whakaarohia e ngā rōpū rangahau o Haina me Huitene tētahi maramara kimi hiko poto-whaiaro-a-ringa (SWIR) pin heterojunction hou e ahu mai ana i ngā kiriata graphene nanoribbon (GNR)/alumina/silicon tioata kotahi. I raro i te pānga whakakotahi o te pānga kuaha whatu i whakaohokia e te atanga heterogeneous me te mara hiko kua hangaia, i whakaatu te maramara i te urupare tino-teitei me te mahi kimi i te ngaohiko kore-pānga. Ko te tere urupare A o te maramara kimi hiko he 75.3 A/W i roto i te aratau whaiaro-a-ringa, he tere kimi o te 7.5 × 10¹⁴ Jones, me te whai huatanga kuantum o waho e tata ana ki te 104%, e whakapai ake ana i te mahi kimi o te momo maramara e ahu mai ana i te silicon mā te rekoata 7 ngā ota o te nui. Hei tāpiri, i raro i te aratau taraiwa tikanga, ko te tere urupare o te maramara, te tere kimi, me te whai huatanga kuantum o waho he 843 A/W, 10¹⁵ Jones, me te 105% ia, koinei katoa ngā uara teitei rawa atu i pūrongohia i roto i ngā rangahau o nāianei. I taua wā anō, i whakaatuhia hoki e tēnei rangahau te whakamahinga o te maramara kimi whakaahua-hiko i roto i ngā mara o te whakawhitiwhiti kōrero whatu me te whakaahua pūwero-whero, e whakaatu ana i tōna pūmanawa nui.
Hei ako pūnaha i te mahi hikohiko o te taputapu whakaahua i runga i ngā nanoribbons graphene /Al₂O₃/ silicon tioata kotahi, i whakamātauria e ngā kairangahau ōna urupare āhua pumau (piko au-ngaohiko) me ōna urupare hihiri (piko au-wā). Hei aromatawai pūnaha i ngā āhuatanga urupare whatu o te taputapu whakaahua heterostructure heteroribbon graphene /Al₂O₃/ silicon tioata kotahi i raro i ngā ngaohiko rerekē, i inehia e ngā kairangahau te urupare iahiko hihiri o te taputapu i ngā piro 0 V, -1 V, -3 V me te -5 V, me te mātotoru mana whatu o te 8.15 μW/cm². Ka piki ake te iahiko whakaahua me te piro whakamuri, ā, ka whakaatu i te tere urupare tere i ngā ngaohiko piro katoa.
Hei whakamutunga, i hangaia e ngā kairangahau tētahi pūnaha whakaahua, ā, i angitu te whakatutuki i te whakaahua whaiaro o te infrared ngaru-poto. Ka mahi te pūnaha i raro i te korenga o te pānga, ā, kāore he whakapaunga pūngao. I aromatawaihia te kaha whakaahua o te taputapu whakaahua mā te whakamahi i tētahi kopare pango me te tauira reta "T" (e whakaaturia ana i te Pikitia 1).
Hei whakamutunga, i angitu te hanga a tēnei rangahau i ngā taputapu whakaahua-ā-unoa i runga i ngā nanoribbons graphene, ā, i tutuki i a rātou te reiti urupare teitei rawa atu. I taua wā, i angitu te whakaatu a ngā kairangahau i ngā āheinga whakawhitiwhiti kōrero whatu me te whakaahua o tēneipūoko whakaahua tino aroEhara i te mea ko tēnei whakatutukitanga rangahau anake te huarahi mahi mō te whakawhanake i ngā nanoribbons graphene me ngā taputapu optoelectronic e hangai ana ki te silicon, engari e whakaatu ana hoki i tā rātou mahi tino pai hei taputapu whakaahua infrared ngaru-poto e whakahaere ana i a rātou anō.
Wā tuku: 28 Paenga-whāwhā 2025