Ubushakashatsi bushya kuri Avalanche Photodetector

Ubushakashatsi bushya kuri Avalanche Photodetector

Kumenyekanisha cyane-fotone nkeya cyangwa niyo tekinoroji ya fotone imwe ifite amahirwe menshi yo gukoreshwa mubice nko kwerekana urumuri ruto, amashusho ya kure na telemetrie, ndetse no gutumanaho kwa kwant. Muri byo, Photodetector ya avalanche (APD) yabaye icyerekezo cyingenzi mubijyanye nubushakashatsi bwibikoresho bya optoelectronic bitewe nubunini bwabyo, gukora neza no guhuza byoroshye. Ikigereranyo cyerekana-urusaku (SNR) ni ikimenyetso cyingenzi cya APD Photodetector, isaba inyungu nyinshi hamwe numuyoboro muke wijimye. Ubushakashatsi bwibice bibiri (2D) ibikoresho bya der der Waals bitandukanya ibintu byerekana ibyerekezo byinshi mugutezimbere APDs ikora cyane. Abashakashatsi baturutse mu Bushinwa bahisemo bipolar ibice bibiri bya semiconductor WSe₂ nkibikoresho bifotora kandi bategura neza imiterere ya Pt / WSe₂ / NiAPD Photodetectorhamwe nibikorwa byiza bihuye nibikorwa kugirango bikemure inyungu zisanzwe zurusaku rwa APD gakondo.

Abashakashatsi basabye anifoto ya avalanchehashingiwe ku miterere ya Pt / WSe₂ / Ni, kugera ku gutahura cyane ibimenyetso byerekana urumuri rudakabije kurwego rwa fW ku bushyuhe bwicyumba. Bahisemo ibice bibiri-byifashishwa bya semiconductor WSe₂, ifite ibikoresho byiza byamashanyarazi, bakayihuza nibikoresho bya electrode ya Pt na Ni kugirango batezimbere ubwoko bushya bwa Photodetector. Mugutezimbere neza imikorere yimirimo ihuye na Pt, WSe₂ na Ni, hashyizweho uburyo bwo gutwara abantu bushobora guhagarika neza abitwara umwijima mugihe bahisemo kwemerera abatwara amafoto banyuramo. Ubu buryo bugabanya cyane urusaku rwinshi ruterwa ningaruka zabatwara ionisiyoneri, bigafasha fotodetector kugera kubimenyetso byoroshye bya optique byerekana ibimenyetso byurusaku ruke cyane.

Ubu bushakashatsi bwerekana uruhare rukomeye rwibikoresho bya tekinoroji hamwe nogutezimbere intera mugutezimbere imikorere yagufotora. Binyuze mu buhanga bwa electrode n'ibikoresho-bipimo bibiri, ingaruka zo gukingira abatwara umwijima zagerwaho, bigabanya cyane urusaku rw’urusaku no kurushaho kunoza imikorere. Imikorere yiyi deteter ntabwo igaragara gusa mubiranga ifoto yamashanyarazi, ariko kandi ifite ibyifuzo byinshi byo gusaba. Hamwe no guhagarika neza kwijimye ryubushyuhe bwicyumba no kwinjiza neza abatwara fotogene, iyi fotodetekeri irakwiriye cyane cyane kumenya ibimenyetso byurumuri rudakomeye mubice nko gukurikirana ibidukikije, kwitegereza inyenyeri, no gutumanaho neza. Ubu bushakashatsi bugezweho ntabwo butanga ibitekerezo bishya gusa mugutezimbere ibikoresho bifotora buke buke, ahubwo binatanga ibitekerezo bishya kubushakashatsi buzaza no guteza imbere imikorere-nini kandi ifite imbaraga nke za optoelectronic.