Rekodi y'icyuma gipima imiterere ya silikoni y'umukara: ubushobozi bwo hanze bwa quantum bugera kuri 132%

Silikoni y'umukaraicyuma gipima fotoinyandiko: ubushobozi bwo hanze bwa quantum kugeza kuri 132%

Nk’uko byatangajwe n’itangazamakuru, abashakashatsi bo muri Kaminuza ya Aalto bakoze igikoresho cy’ikoranabuhanga gifite ubushobozi bwo gupima ingano y’izuba bugera kuri 132%. Iki gikorwa kidashoboka cyagezweho hakoreshejwe silikoni y’umukara ifite imiterere ya nanostructured, ishobora kuba iterambere rikomeye ku tunyangingo tw’izuba n’ibindi.gufotoraNiba igikoresho cya photovoltaic gitekerezwaho gifite ubushobozi bwo hanze bwa quantum bwa 100 ku ijana, bivuze ko buri photon ikigeramo ikora electron, ikusanywa nk'amashanyarazi binyuze mu muyoboro.

Kandi iki gikoresho gishya ntikigera ku musaruro 100% gusa, ahubwo kigera no ku musaruro urenze 100%. 132% bivuze impuzandengo ya electron 1.32 kuri fotoni imwe. Gikoresha silikoni y'umukara nk'ikintu gikora kandi gifite agace gato n'imiterere ya nano y'inkingi ishobora kwinjiza urumuri rwa ultraviolet.

Birumvikana ko udashobora gukora electron 0.32 z'inyongera mu mwuka muto, kuko fiziki ivuga ko ingufu zidashobora kuremwa mu mwuka muto, none se izi electron z'inyongera zituruka he?

Byose bishingira ku ihame rusange ry’imikorere y’ibikoresho bya photovoltaic. Iyo photon y’urumuri rw’impanuka iguye ku kintu gikora, akenshi silikoni, ikubita electron imwe muri atome. Ariko rimwe na rimwe, photon ifite ingufu nyinshi ishobora gukubita electron ebyiri idaciye ku mategeko ya fiziki.

Nta gushidikanya ko gukoresha iki kintu bishobora gufasha cyane mu kunoza imiterere y’uturemangingo tw’izuba. Mu bikoresho byinshi bya optoelectronic, imikorere iragabanuka mu buryo butandukanye, harimo n’igihe fotoni zigaragara ku gikoresho cyangwa electron zigahurira hamwe n’“imyobo” yasigaye muri atome mbere yuko zikusanywa n’urusobe rw’amashanyarazi.

Ariko itsinda rya Aalto rivuga ko ryakuyeho cyane izo mbogamizi. Silikoni y'umukara yinjiza fotoni nyinshi kurusha ibindi bikoresho, kandi imiterere ya nano yagabanutse kandi ifatana ku nkuta igabanya electron ku buso bw'ibikoresho.

Muri rusange, izi ntambwe zatumye ubushobozi bwo hanze bwa quantum bw'igikoresho bugera kuri 130%. Ibisubizo by'ikipe byanagemejwe ku giti cyayo n'Ikigo cy'Igihugu cy'Ubudage gishinzwe Metrology, PTB (Ikigo cy'Ubudage cy'Ubushakashatsi ku Bugenge).

Nk’uko abashakashatsi babivuga, ubu buryo bwo gukora neza bushobora kunoza imikorere ya fotodecteur iyo ari yo yose, harimo n’uturemangingo tw’izuba n’utundi turemangingo tw’urumuri, kandi icyuma gishya cyo gupima urumuri gisanzwe gikoreshwa mu bucuruzi.