Kukho ithemba lokwandisa ukusebenza kakuhle kweepaneli zelanga ze-silicon zakudala

Ayiyomfihlo into yokuba iiphaneli zelanga zesilicon ezidumileyo zinemida kwindlela eziguqula ngayo ukukhanya zibe ngumbane. Oku kungenxa yokuba ifotoni nganye ibetha i-electron enye kuphela, nangona amandla esuntswana elikhanyayo anokwanela ukunkqonkqoza ii-electron ezimbini. Kuphononongo olutsha, izazinzulu ze-MIT zibonisa ukuba lo mda usisiseko unokoyiswa, uvula indlela yeeseli ze-silicon zelanga ngokusebenza okuphezulu kakhulu.

Ukukwazi kwefoton ukunkqonkqoza ii-electron ezimbini kwakuchanekile ngokwethiyori malunga neminyaka engama-50 eyadlulayo. Kodwa iimvavanyo zokuqala eziyimpumelelo zaveliswa kwakhona kwiminyaka emi-6 eyadlulayo. Emva koko, iseli yelanga eyenziwe ngezinto eziphilayo yasetyenziswa njengovavanyo. Kuya kuhenda ukuqhubela phambili kwi-silicon esebenza ngakumbi kunye neninzi, apho izazinzulu zikwazile ukufikelela kuphela ngomsebenzi omninzi.

Ngexesha lokugqibela umfuniselo iphumelele ekudaleni iseli ye-silicon yelanga, umda wokusebenza kakuhle kwethiyori onyuswe ukusuka kwi-29,1% ukuya kwi-35%, kwaye oku akusiyo umda. Ngelishwa, ngenxa yoko, iseli yelanga kufuneka yenziwe idityaniswe kwizinto ezintathu ezahlukeneyo, ngoko ke kulo mzekelo akunakwenzeka ukufumana nge-silicon ye-monolithic. Xa zidityanisiwe, iseli yelanga sisandwich eyenziwe ngezinto eziphilayo. itetracene ngendlela yefilimu engaphezulu, eyona filimu incinci (ininzi yeathomu) ye-hafnium oxynitride kwaye, eneneni, i-silicon wafer.

Umaleko we-tetracene ufunxa i-photon ephezulu yamandla kwaye uguqule amandla ayo abe yi-excitation ezimbini ezilahlekileyo kumaleko. Ezi zibizwa ngokuba zii-quasiparticles imincili. Inkqubo yokwahlula yaziwa njenge singlet exciton fission. Kuqikelelo olurhabaxa, ii-excitons ziziphatha njengee-electron, kwaye ezi zivuselelo zingasetyenziselwa ukuvelisa umsinga wombane. Umbuzo ngowokuba ungayidlulisela njani le mincili kwi-silicon nangaphaya?

Umaleko omncinci we-hafnium oxynitride waba luhlobo lwebhulorho phakathi kwefilimu ye-tetracene kunye ne-silicon. Iinkqubo kulo maleko kunye neziphumo zomhlaba kwi-silicon ziguqula i-excitons zibe yi-electron, kwaye emva koko yonke into iyaqhubeka njengesiqhelo. Uvavanyo luye lwakwazi ukubonisa ukuba oku kwandisa ukusebenza kweseli yelanga kwi-spectra eluhlaza okwesibhakabhaka kunye nohlaza. Ngokutsho kwezazinzulu, oku akusiyo umda wokunyusa ukusebenza kwe-silicon yeseli yelanga. Kodwa kwanetekhnoloji ebonisiweyo iyakuthatha iminyaka ukuba ithengiswe.

umthombo: 3dnews.ru