Sabon Bincike akan Mai Binciken Hoto na Ƙarƙashin Ƙarfafawa

Sabon Bincike akan Mai Binciken Hoto na Ƙarƙashin Ƙarfafawa

Gano babban hazaka na ƴan-photon ko ma fasahar hoto ɗaya yana riƙe da fa'idodin aikace-aikace a fagage kamar ƙananan hoto, ji na nesa da na'urar sadarwa, da kuma sadarwar adadi. Daga cikin su, avalanche photodetectors (APD) sun zama muhimmiyar jagora a fagen binciken na'urorin optoelectronic saboda ƙananan girman su, babban inganci da haɗin kai mai sauƙi. Rarraba sigina-zuwa amo (SNR) muhimmiyar alama ce ta APD Photodetector, wanda ke buƙatar babban riba da ƙarancin duhu. Binciken da aka yi akan abu biyu (2D) van der Waals heterojunctions yana nuna fa'ida mai fa'ida a cikin haɓakar manyan ayyuka na APDs. Masu bincike daga kasar Sin sun zaɓi abu na biyu na semiconductor WSe₂ a matsayin abu mai ɗaukar hoto kuma sun shirya tsarin Pt/WSe₂/Ni a hankali.APD Photodetectortare da mafi kyawun aikin aikin daidaitawa don magance matsalar hayaniyar samun hayaniyar APD na gargajiya.

Masu bincike sun ba da shawarar wanidusar ƙanƙara mai daukar hotodangane da tsarin Pt/WSe₂/Ni, samun nasarar gano siginonin haske masu rauni sosai a matakin fW a zafin jiki. Sun zaɓi nau'in semiconductor na WSe₂ mai nau'i biyu, wanda ke da kyawawan kayan lantarki, kuma sun haɗa shi da kayan lantarki na Pt da Ni don samun nasarar haɓaka sabon nau'in binciken hoto na avalanche. Ta hanyar inganta daidaitaccen aikin da ya dace tsakanin Pt, WSe₂ da Ni, an tsara tsarin sufuri wanda zai iya toshe masu dako mai duhu yadda ya kamata yayin da yake barin masu ɗaukar hoto su wuce. Wannan tsarin yana rage yawan hayaniyar da ke haifar da tasirin ionization mai ɗaukar hoto, yana ba da damar mai gano hoto don cimma nasarar gano siginar gani mai mahimmanci a ƙaramin ƙaramar ƙarami.

Wannan binciken yana nuna mahimmancin rawar injiniyan kayan aiki da haɓaka haɗin gwiwa don haɓaka aikinmasu daukar hoto. Ta hanyar ƙwaƙƙwaran ƙira na na'urori masu auna sigina da kayan sassa biyu, an cimma tasirin garkuwar masu ɗaukar duhu, da rage yawan tsangwama da ƙara haɓaka haɓakar ganowa. Ayyukan wannan mai ganowa ba wai kawai yana nunawa a cikin halayen photoelectric ba, amma har ma yana da fa'idodin aikace-aikace. Tare da ingantacciyar toshewar yanayin duhu a yanayin ɗaki da ingantaccen ɗaukar masu ɗaukar hoto, wannan mai binciken hoto ya dace musamman don gano siginar haske mai rauni a fagage kamar sa ido kan muhalli, kallon sararin samaniya, da sadarwa ta gani. Wannan nasarar binciken ba wai kawai yana ba da sababbin ra'ayoyi don haɓaka ƙananan kayan aikin hoto ba, amma kuma yana ba da sababbin nassoshi don bincike na gaba da ci gaban manyan ayyuka da ƙananan na'urorin optoelectronic.


Lokacin aikawa: Agusta-27-2025