Mai aiki tukuru da kansana'urar gano hotuna ta infrared
infraredna'urar gano hotoTana da halaye na ƙarfin hana tsangwama, ƙarfin gane manufa, aiki a kowane yanayi da kuma ɓoyewa mai kyau. Tana taka muhimmiyar rawa a fannoni kamar likitanci, soja, fasahar sararin samaniya da injiniyan muhalli. Daga cikinsu, mai son kai, mai himma da kuma mai himma wajen aiwatar da manufofinta.gano hoton lantarkiguntu wanda zai iya aiki da kansa ba tare da ƙarin wutar lantarki na waje ba ya jawo hankali sosai a fagen gano infrared saboda aikin sa na musamman (kamar 'yancin kai na makamashi, babban hankali da kwanciyar hankali, da sauransu). Sabanin haka, guntuwar gano photoelectric na gargajiya, kamar guntuwar infrared mai tushen silicon ko narrowbandgap mai tushen semiconductor, ba wai kawai yana buƙatar ƙarin ƙarfin lantarki na bias don haifar da rabuwar masu ɗaukar hoto don samar da hasken rana ba, har ma yana buƙatar ƙarin tsarin sanyaya don rage hayaniyar zafi da inganta amsawa. Saboda haka, ya zama da wahala a cika sabbin ra'ayoyi da buƙatun ƙarni na gaba na guntuwar gano infrared a nan gaba, kamar ƙarancin amfani da wutar lantarki, ƙaramin girma, ƙarancin farashi da babban aiki.
Kwanan nan, ƙungiyoyin bincike daga China da Sweden sun gabatar da sabon guntuwar gano wutar lantarki ta infrared (SWIR) mai sarrafa kai tsaye ta hanyar amfani da fim ɗin nanoribbon (GNR)/alumina/silicon crystal guda ɗaya. A ƙarƙashin tasirin haɗin gwiwar tasirin gate na gani wanda ke haifar da haɗin kai mai ban mamaki da filin lantarki da aka gina a ciki, guntu ya nuna aikin amsawa mai girma da kuma ganowa a sifili ƙarfin lantarki. Guntuwar gano wutar lantarki tana da ƙimar amsawar A har zuwa 75.3 A/W a yanayin da ake sarrafa kanta, ƙimar ganowa ta 7.5 × 10¹⁴ Jones, da kuma ingancin kwantum na waje kusa da 104%, wanda ke inganta aikin gano nau'in guntu iri ɗaya da aka yi da silicon ta hanyar rikodin umarni 7 na girma. Bugu da ƙari, a ƙarƙashin yanayin tuƙi na al'ada, ƙimar amsawar guntu, ƙimar ganowa, da ingancin kwantum na waje duk sun kai 843 A/W, 10¹⁵ Jones, da 105% bi da bi, waɗanda duk sune mafi girman ƙima da aka ruwaito a cikin binciken da ake yi a yanzu. A halin yanzu, wannan binciken ya kuma nuna yadda ake amfani da guntuwar gano haske ta hanyar amfani da na'urar daukar hoto a fannin sadarwa ta gani da kuma daukar hoton infrared a zahiri, wanda hakan ya nuna babban karfin amfani da shi.
Domin yin nazarin aikin na'urar gano haske ta hanyar amfani da fasahar nanoribbons/Al₂O₃/ silinon kristal guda ɗaya, masu bincike sun gwada yanayinsa na tsaye (current-voltage current) da kuma yanayin halayensa na zamani (current-time current). Don tantance halayen amsawar gani na na'urar gano haske ta na'urar gano haske ta na'urar gano haske ta na'urar nanoribbon/Al₂O₃/ monocrystalline a ƙarƙashin ƙarfin bias daban-daban, masu bincike sun auna martanin wutar lantarki mai ƙarfi na na'urar a 0 V, -1 V, -3 V da -5 V bias, tare da ƙarfin gani na 8.15 μW/cm². Hasken hasken yana ƙaruwa tare da bias kuma yana nuna saurin amsawa mai sauri a duk ƙarfin bias.
A ƙarshe, masu binciken sun ƙirƙiro tsarin daukar hoto kuma sun sami nasarar cimma nasarar daukar hoto mai amfani da kai na gajeren zangon infrared. Tsarin yana aiki ba tare da son kai ba kuma ba shi da amfani da makamashi kwata-kwata. An kimanta ƙarfin daukar hoto na na'urar gano hoto ta amfani da abin rufe fuska baƙi mai siffar harafin "T" (kamar yadda aka nuna a Hoto na 1).
A ƙarshe, wannan bincike ya yi nasarar ƙirƙiro na'urorin gano hotuna masu amfani da kansu bisa ga graphene nanoribbons kuma ya cimma nasarar samun sakamako mai kyau. A halin yanzu, masu binciken sun nuna nasarar fasahar sadarwa da ɗaukar hoto ta wannan na'urar.na'urar gano hoto mai amsawa sosaiWannan nasarar bincike ba wai kawai tana samar da wata hanya mai amfani don haɓaka na'urorin nanoribbons na graphene da na'urorin optoelectronic da ke tushen silicon ba, har ma tana nuna kyakkyawan aikinsu a matsayin na'urorin gano hasken infrared masu amfani da gajeren zango.
Lokacin Saƙo: Afrilu-28-2025