Ikoranabuhanga rishya rya silicon photodetector ntoya

Ikoranabuhanga rishya ryaicyuma gito cyo gupima foto cya silikoni
Imiterere yo gufata photon ikoreshwa mu kongera ubushobozi bwo kwinjiza urumuri mu gihe cyorohejeibikoresho byo gupima foto bya silikoni
Sisitemu za Fotoniki ziri kwiyongera cyane mu bikorwa byinshi bishya, birimo itumanaho ry’amajwi, kumenya amakuru ya liDAR, no gufata amashusho mu buvuzi. Ariko, gukoresha fotoniki mu bisubizo by’ubuhanga mu gihe kizaza biterwa n’ikiguzi cy’inganda.gufotora, ibyo bikaba biterwa ahanini n'ubwoko bwa semiconductor ikoreshwa muri uwo murimo.
Ubusanzwe, silikoni (Si) ni yo yari semiconductor ikoreshwa cyane mu nganda z'ibikoresho by'ikoranabuhanga, ku buryo inganda nyinshi zakuze zikikije ibi bikoresho. Ikibabaje ni uko Si ifite ubushobozi buke bwo kwinjiza urumuri muri spectrum ya hafi ya infrared (NIR) ugereranije n'izindi semiconductor nka gallium arsenide (GaAs). Kubera iyo mpamvu, GaAs n'ibindi bikoresho bifitanye isano biri gutera imbere mu gukoresha fotonike ariko ntibihuye n'uburyo gakondo bwo gukoresha semiconductor ya metal-oxide (CMOS) ikoreshwa mu gukora ibikoresho byinshi by'ikoranabuhanga. Ibi byatumye ikiguzi cyo gukora ibikoresho byayo cyiyongera cyane.
Abashakashatsi bateguye uburyo bwo kongera cyane uburyo bwo kwinjiza silicon hafi ya infrared, bishobora gutuma ikiguzi cy’ibikoresho bifite fotonike zikora neza kigabanuka, kandi itsinda ry’ubushakashatsi rya UC Davis ririmo gutangiza ingamba nshya zo kunoza cyane uburyo urumuri rufata silicon thin films. Mu nyandiko yabo iheruka muri Advanced Photonics Nexus, berekanye ku nshuro ya mbere uburyo bwo kwerekana fotonike ishingiye kuri silicon ifite imiterere mito n’iy’ubuso bufata urumuri, bigatuma habaho iterambere ridasanzwe nk’irya GaAs n’izindi semiconductors zo mu itsinda rya III-V. FOTODIKTERI ... Ubu buryo bwo gukwirakwiza urumuri ku ruhande rw'inyuma bwongera igihe cy'urugendo rw'urumuri kandi bukarugabanya umuvuduko warwo, bigatuma habaho imikoranire myinshi hagati y'urumuri n'ibintu bityo bigatuma rurushaho kwinjiza urumuri.
Abashakashatsi banakoze isuzuma ry’amashusho n’isesengura ry’ibitekerezo kugira ngo basobanukirwe neza ingaruka z’imiterere y’ifotoni, kandi bakoze igerageza ritandukanye bagereranya ifotoni zirimo n’izidafite. Basanze ifotoni zifata zatumye habaho iterambere rikomeye mu gukoresha umuyoboro wa interineti mu buryo bwa NIR, ziguma hejuru ya 68% aho 86% ari hejuru. Ni ngombwa kumenya ko mu gice cy’infrared gikikije hafi, ubushobozi bwo gukoresha ifotoni buruta inshuro nyinshi silicon isanzwe, burenze gallium arsenide. Byongeye kandi, nubwo igishushanyo cyatanzwe ari icy’amapine ya silikoni afite ubugari bwa 1μm, ifotoni zifata 30 nm na 100 nm zijyanye na electronics za CMOS zigaragaza imikorere nk’iyo.
Muri rusange, ibyavuye muri ubu bushakashatsi bigaragaza ingamba nziza zo kunoza imikorere ya silicon-based photodetectors mu mikoreshereze mishya ya fotoniki. Ishobora kwinjiza cyane ndetse no mu duce duto cyane twa silicon, kandi ubushobozi bwa parasite bw'uru ruziga bushobora kuguma hasi, ibi bikaba ari ingenzi muri sisitemu yihuta cyane. Byongeye kandi, uburyo bwatanzwe burajyanye n'imikorere igezweho ya CMOS bityo bukaba bushobora guhindura uburyo optoelectronics zihuzwa mu miyoboro gakondo. Ibi, bishobora gutanga inzira y'iterambere rikomeye mu miyoboro ya mudasobwa yihuta cyane n'ikoranabuhanga ryo gufata amashusho.