Haisi chakavanzika kuti yakakurumbira silicon solar panels ine painogumira mukuti vanoshandura sei chiedza kuita magetsi. Izvi zvinodaro nekuti fotoni yega yega inogogodza erekitironi rimwe chete, kunyangwe simba rechikamu chechiedza rinogona kukwana kugogodza maerekitironi maviri. Muchidzidzo chitsva, MIT masayendisiti anoratidza kuti kudzikisira uku kunogona kukundwa, kugadzira nzira yesilicon solar masero ane hunyanzvi hwepamusoro.
Kugona kwephoton kugogodza kunze maerekitironi maviri kwaifungidzirwa makore makumi mashanu apfuura. Asi kuedza kwekutanga kwakabudirira kwakagadzirwa zvakare makore matanhatu apfuura. Zvadaro, sero rezuva rakagadzirwa nezvinhu zvehupenyu rakashandiswa sekuedza. Zvingave zvinoyedza kuenderera kune iyo inoshanda uye yakawanda silicon, chimwe chinhu icho masayendisiti angokwanisa kuwana kuburikidza nehukuru hwebasa.
Munguva yekupedzisira yakabudirira mukugadzira silicon solar cell, iyo theoretical performance muganho wakawedzera kubva pa29,1% kusvika 35%, uye iyi haisi iyo muganhu. Nehurombo, nekuda kweizvi, sero rezuva raifanira kugadzirwa nezvinhu zvitatu zvakasiyana, saka munyaya iyi hazvibviri kupfuudza nesilicon monolithic. Kana yaunganidzwa, solar cell isangweji rakagadzirwa neorganic material. muchimiro chemufirimu wepamusoro, iyo thinnest (atomu akati wandei) firimu rehafnium oxynitride uye, kutaura zvazviri, silicon wafer.
Iyo tetracene layer inotora iyo yakakwira-energy photon uye inoshandura simba rayo kuita maviri akarasika mafambiro ari mudura. Aya ndiwo anonzi quasiparticles . Iyo nzira yekuparadzanisa inozivikanwa se singlet exciton fission. Kusvika pakufungidzira, maexciton anoita semaerekitironi, uye mafambiro aya anogona kushandiswa kugadzira magetsi. Mubvunzo ndewokuti ungaendesa sei mafambiro aya kusilicon uye nekupfuura?
Mutsetse mutete wehafnium oxynitride wakava rudzi rwebhiriji pakati pepamusoro tetracene firimu nesilicon. Maitiro mune iyi layer uye pamusoro pemhedzisiro pasilicon inoshandura excitons kuita maerekitironi, uyezve zvese zvinoenderera semazuva ese. Kuedza kwakakwanisa kuratidza kuti izvi zvinowedzera kushanda kwesero rezuva mubhuruu uye green spectra. Maererano nemasayendisiti, iyi haisi iyo muganhu wekuwedzera kushanda kwesilicon solar cell. Asi kunyangwe tekinoroji yakaunzwa inotora makore kuti itengeswe.
Source: 3dnews.ru