Rangahau Hou mō te Pūoko Whakaahua Āwhata Iti-ahu

Rangahau Hou mō te Pūoko Whakaahua Āwhata Iti-ahu

He nui ngā tūmanakohanga tono mō te kimi i ngā hangarau photon iti-aro, photon kotahi rānei, i roto i ngā mara pēnei i te whakaahua iti-mārama, te rongo mamao me te telemetry, tae atu ki te whakawhitiwhiti kōrero irahiko. I roto i ēnei, kua noho ngā photodetector avalanche (APD) hei huarahi nui i roto i te mara rangahau taputapu optoelectronic nā te iti o te rahi, te pai o te mahi, me te ngāwari o te whakauru. Ko te ōwehenga tohu-ki-haruru (SNR) he tohu nui o te Photodetector APD, e hiahia ana ki te whakanui nui me te ia pōuri iti. Ko te rangahau mō ngā rauemi rua-ahu (2D) van der Waals heterojunctions e whakaatu ana i ngā tūmanakohanga whānui mō te whanaketanga o ngā APD mahi-teitei. I whiriwhiria e ngā kairangahau mai i Haina te rauemi semiconductor rua-ahu bipolar WSe₂ hei rauemi photosensitive, ā, i ata whakaritea te hanganga Pt/WSe₂/Ni.Pūoko Whakaahua APDme te mahi taurite pai rawa atu hei whakaoti i te raruraru haruru tāpiri o te APD tuku iho.

Kua whakaarohia e ngā kairangahau tētahipūoko whakaahua horongai runga i te hanganga Pt/WSe₂/Ni, i tutuki ai te kitenga tino tairongo o ngā tohu mārama tino ngoikore i te taumata fW i te pāmahana rūma. I tīpakohia e rātou te rauemi haurua-ahu rua WSe₂, he tino pai ngā āhuatanga hiko, ā, i whakakotahihia ki ngā rauemi hiko Pt me Ni hei whakawhanake angitu i tētahi momo taputapu whakaahua avalanche hou. Mā te arotau tika i te taurite mahi i waenga i te Pt, WSe₂ me te Ni, i hangaia he tikanga kawe ka taea te aukati i ngā kaikawe pōuri me te tuku i ngā kaikawe whakaahua kia haere. Ka whakaitihia e tēnei tikanga te haruru nui i puta mai i te ionization pānga kaikawe, ka taea ai e te taputapu whakaahua te whakatutuki i te kitenga tohu whatu tino tairongo i te taumata haruru tino iti.

E whakaatu ana tēnei rangahau i te tūranga nui o te hangarau rauemi me te arotautanga atanga ki te whakarei ake i te mahi anga kaitirotiro whakaahua. Mā te hoahoa auaha o ngā irahiko me ngā rauemi rua-ahu, i tutuki ai te pānga tiaki o ngā kaikawe pōuri, me te whakaiti nui i te pokanoa haruru me te whakapai ake i te pai o te kimi. Kāore te mahi a tēnei kaikawe e whakaatahia ana i roto i ōna āhuatanga hiko-whakaahua anake, engari he whānui hoki ngā tono. Nā tōna aukati whai hua i te ia pōuri i te pāmahana rūma me te mimiti whai hua o ngā kaikawe whakaahua-whakaputa, he tino pai tēnei kaikawe whakaahua mō te kimi i ngā tohu mārama ngoikore i roto i ngā mara pēnei i te aroturuki taiao, te tirotiro whetū, me te whakawhitiwhiti kōrero whatu. Ehara i te mea ko tēnei whakatutukitanga rangahau anake e whakarato ana i ngā whakaaro hou mō te whanaketanga o ngā kaikawe whakaahua rauemi iti-ahu, engari e tuku ana hoki i ngā tohutoro hou mō te rangahau me te whanaketanga o ngā taputapu hiko-whakaahua mahi-teitei me te iti-mana ā muri ake nei.