Sabon Bincike Kan Mai Nemo Hoto Mai Sauƙi Mai Girma

Sabon Bincike Kan Mai Nemo Hoto Mai Sauƙi Mai Girma

Gano fasahar photon kaɗan ko ma ta photon guda ɗaya yana da manyan damar amfani a fannoni kamar ɗaukar hoto mai ƙarancin haske, na'urar hangen nesa da na'urar hangen nesa, da kuma sadarwa ta kwantum. Daga cikinsu, na'urorin hangen nesa na zaftarewar dusar ƙanƙara (APD) sun zama muhimmin alkibla a fannin binciken na'urorin optoelectronic saboda ƙaramin girmansu, ingantaccen aiki da sauƙin haɗawa. Rabon sigina zuwa hayaniya (SNR) muhimmin alama ne na na'urar hangen nesa ta APD, wanda ke buƙatar babban riba da ƙarancin hasken rana mai duhu. Binciken da aka yi kan nau'ikan abubuwa biyu (2D) van der Waals heterojunctions ya nuna fa'idodi masu yawa a cikin haɓaka APD masu aiki mai girma. Masu bincike daga China sun zaɓi kayan semiconductor mai girma biyu WSe₂ a matsayin kayan hangen nesa kuma sun shirya tsarin Pt/WSe₂/Ni da kyau.Mai gano Hoto na APDtare da mafi kyawun aikin daidaitawa don magance matsalar hayaniyar riba ta asali ta APD ta gargajiya.

Masu bincike sun gabatar da wanina'urar gano ambaliyar ruwabisa tsarin Pt/WSe₂/Ni, sun cimma nasarar gano siginar haske mai rauni sosai a matakin fW a zafin ɗaki. Sun zaɓi kayan semiconductor mai girma biyu WSe₂, wanda ke da kyawawan halayen lantarki, kuma sun haɗa shi da kayan lantarki na Pt da Ni don samun nasarar ƙirƙirar sabon nau'in na'urar gano zaftarewar dusar ƙanƙara. Ta hanyar inganta daidaiton aikin aiki tsakanin Pt, WSe₂ da Ni daidai, an tsara tsarin sufuri wanda zai iya toshe masu ɗaukar hoto masu duhu yadda ya kamata yayin da aka zaɓi barin masu ɗaukar hoto da aka samar su ratsa ta. Wannan tsarin yana rage hayaniyar da ta wuce gona da iri da ionization na tasirin mai ɗaukar hoto ke haifarwa, yana ba mai gano hoto damar cimma gano siginar gani mai matuƙar tasiri a matakin ƙaramar amo.

Wannan binciken ya nuna muhimmiyar rawar da injiniyan kayan aiki da inganta hanyoyin sadarwa ke takawa wajen inganta aikinmasu daukar hotoTa hanyar ƙira mai kyau ta lantarki da kayan aiki masu girma biyu, an cimma tasirin kariya na masu ɗaukar hoto masu duhu, wanda hakan ya rage tsangwama sosai da kuma ƙara inganta ingancin ganowa. Aikin wannan na'urar gano haske ba wai kawai yana nuna halayensa na hasken lantarki ba ne, har ma yana da fa'idodi masu yawa na amfani. Tare da ingantaccen toshewar hasken rana mai duhu a zafin ɗaki da kuma ingantaccen ɗaukar masu ɗaukar hoto, wannan na'urar gano haske ta dace musamman don gano alamun haske masu rauni a fannoni kamar sa ido kan muhalli, lura da sararin samaniya, da sadarwa ta gani. Wannan nasarar bincike ba wai kawai tana ba da sabbin ra'ayoyi don haɓaka na'urorin gano haske masu ƙarancin girma ba, har ma tana ba da sabbin nassoshi don bincike da haɓaka na'urorin gano haske masu ƙarfi da ƙarancin ƙarfi a nan gaba.