Ko ngā rangahau hou opūoko whakaahua horonga
He whānuitia te whakamahinga o te hangarau kimi i te pūwero whero i roto i te tirotiro hōia, te aroturuki taiao, te tātaritanga hauora me ētahi atu mara. He iti noa ngā herenga o ngā taputapu kimi pūwero whero tuku iho, pērā i te aro ki te kimi, te tere urupare me ētahi atu. He tino pai ngā āhuatanga whakaahua-hiko me te āheinga whakarerekētanga o ngā rauemi InAs/InAsSb Class II superlattice (T2SL), ā, he pai rawa atu ēnei mō ngā taputapu kimi pūwero whero ngaru-roa (LWIR). Kua roa te raruraru o te ngoikore o te urupare i roto i te kimi pūwero whero ngaru-roa e āwangawanga ana, e whakawhāiti ana i te pono o ngā tono taputapu hiko. Ahakoa ko te taputapu kimi whakaahua āwhata (Pūoko whakaahua APD) he tino pai te mahi urupare, ka pāngia e te au pōuri nui i te wā e whakareatia ana.
Hei whakaoti i ēnei raruraru, kua angitu te hanga a tētahi tīma o Te Whare Wānanga o te Pūtaiao Hiko me te Hangarau o Haina i tētahi pūoro whakaahua āwhata roa (APD) o te ngaru roa o te Karaehe II (T2SL). I whakamahia e ngā kairangahau te tere whakakotahitanga iti o te paparanga mimiti InAs/InAsSb T2SL hei whakaiti i te ia pōuri. I taua wā anō, ka whakamahia te AlAsSb me te uara k iti hei paparanga whakarea hei pehi i te haruru o te taputapu me te pupuri tonu i te whiwhinga nui. Ka whakaratohia e tēnei hoahoa he otinga whai hua mō te whakatairanga i te whanaketanga o te hangarau kimi infrared ngaru roa. Ka whakamahia e te pūoko he hoahoa taumata-taahiraa, ā, mā te whakarerekē i te ōwehenga hanganga o InAs me InAsSb, ka tutuki te whakawhiti maeneene o te hanganga roopu, ā, ka pai ake te mahi a te pūoko. Mō te whiriwhiri rauemi me te tukanga whakarite, ka whakaahuahia e tēnei rangahau te tikanga tipu me ngā tawhā tukanga o te rauemi InAs/InAsSb T2SL i whakamahia hei whakarite i te pūoko. He mea nui te whakatau i te hanganga me te matotoru o InAs/InAsSb T2SL, ā, me whakarerekē te tawhā hei whakatutuki i te taurite ahotea. I roto i te horopaki o te kimi i te pūwero-roa, kia tutuki ai te roangaru tapahi rite tonu ki te InAs/GaSb T2SL, me whai wā kotahi InAs/InAsSb T2SL matotoru ake. Heoi, mā te monocycle matotoru ka heke te tauwehenga mimiti i te ahunga tipu, ā, ka piki ake te papatipu whai hua o ngā kōhao i roto i te T2SL. Kua kitea mā te tāpiri i te wāhanga Sb ka taea te whakatutuki i te roangaru tapahi roa ake me te kore e whakanui ake i te matotoru o te wā kotahi. Heoi, mā te nui rawa o te hanganga Sb ka arahi pea ki te wehewehenga o ngā huānga Sb.
Nō reira, i tīpakohia a InAs/InAs0.5Sb0.5 T2SL me te rōpū Sb 0.5 hei paparanga hohe o te APD.pūoko whakaahua. Ko te InAs/InAsSb T2SL ka tipu nui i runga i ngā papa GaSb, nō reira me whai whakaaro ki te mahi a GaSb i roto i te whakahaere taumahatanga. Ko te tikanga, ko te whakatutuki i te taurite taumahatanga ko te whakataurite i te pūmau whatunga toharite o te superrattice mō te wā kotahi ki te pūmau whatunga o te papa. I te nuinga o te wā, ka utua te taumahatanga kume i roto i ngā InAs e te taumahatanga pēhi i whakaurua mai e te InAsSb, ka hua ake he paparanga InAs matotoru atu i te paparanga InAsSb. I inehia e tēnei rangahau ngā āhuatanga urupare photoelectric o te photodetector avalanche, tae atu ki te urupare spectral, te au pōuri, te haruru, me ētahi atu, ā, i manatokohia te whai huatanga o te hoahoa paparanga gradient stepped. Ka tātarihia te pānga whakarea avalanche o te photodetector avalanche, ā, ka matapakihia te whanaungatanga i waenga i te tauwehe whakarea me te mana mārama taupatupatu, te pāmahana me ētahi atu tawhā.
PIK. (A) Te hoahoa kauwhata o te pūoko whakaahua APD pūwero-roa InAs/InAsSb; (B) Te hoahoa kauwhata o ngā mara hiko i ia paparanga o te pūoko whakaahua APD.
Wā tuku: Hanuere-06-2025