Rekodhi ye silicon photodetector yenhema: kushanda kwekunze kwe quantum kusvika ku132%

Silikoni nhemamudziyo wekuona fotorekodhi: kushanda kwekunze kwe quantum kusvika ku132%

Sekureva kwemishumo yenhau, vaongorori vepaAalto University vakagadzira mudziyo we optoelectronic une efficiency yekunze kwe quantum inosvika 132%. Izvi zvisingatarisirwi zvakawanikwa nekushandisa nanostructured black silicon, iyo inogona kuva budiriro huru kumasero ezuva nedzimwe nzvimbo.photodetectorsKana mudziyo we photovoltaic unofungidzirwa uine quantum efficiency yekunze ye100 muzana, zvinoreva kuti photon yega yega inorova pairi inogadzira electron, iyo inounganidzwa semagetsi kuburikidza necircuit.

Uye mudziyo mutsva uyu haungogumiri pakushanda zvakanaka kwe100 muzana chete, asi unopfuura 100 muzana. 132% zvinoreva avhareji yemaerekitironi 1.32 paphoton imwe neimwe. Unoshandisa silicon nhema sechinhu chinoshanda uye une koni uye columnar nanostructure inogona kutora chiedza cheultraviolet.

Zviri pachena kuti haugone kugadzira maerekitironi ekuwedzera 0.32 kubva mumhepo diki, pamusoro pezvose, fizikisi inoti simba harigone kugadzirwa kubva mumhepo diki, saka maerekitironi ekuwedzera aya anobva kupi?

Zvese zvinoenderana nepfungwa yekushanda kwezvinhu zve photovoltaic. Kana photon yechiedza chechiitiko ikarova chinhu chinoshanda, kazhinji silicon, inodonhedza elektroni kubva mune rimwe reatomu. Asi mune dzimwe nguva, photon ine simba rakawanda inogona kudonhedza maerekitironi maviri pasina kutyora mitemo yefizikisi.

Hapana mubvunzo kuti kushandisa chiitiko ichi kunogona kubatsira zvikuru mukuvandudza dhizaini yemasero ezuva. Muzvinhu zvakawanda zve optoelectronic, kushanda zvakanaka kunorasika nenzira dzakasiyana-siyana, kusanganisira kana ma photon achiratidzwa kubva pamudziyo kana maerekitironi achibatana zvakare ne "maburi" akasiyiwa mumaatomu asati aunganidzwa necircuit.

Asi chikwata chaAalto chinoti chakabvisa zvipingamupinyi izvozvo zvakanyanya. Silicon nhema inonwisa maphoton akawanda kupfuura zvimwe zvinhu, uye ma nanostructures akatetepa uye ecolumnar anoderedza kubatanidzwa kwemaerekitironi pamusoro pechinhu chacho.

Zvose zviri zviviri, kufambira mberi uku kwakaita kuti kushanda kwe quantum yekunze kwechishandiso ichi kusvike 130%. Zvakabuda muchikwata ichi zvakatosimbiswa nesangano renyika reGerman's national Metrology Institute, PTB (German Federal Institute of Physics).

Sekureva kwevaongorori, kushanda zvakanaka uku kunogona kuvandudza mashandiro echinhu chinoona chiedza, kusanganisira masero ezuva nemamwe masensa echiedza, uye chinoona chiedza chitsva chatove kushandiswa mukutengeserana.