Cov kws tshawb fawb Asmeskas tau rhuav tshem cov ntaub ntawv tshiab rau hnub ci cell efficiency

Tsis ntev los no, cov kws tshawb fawb ntawm US Department of Energy lub National Renewable Energy Laboratory (NREL) tau tsim lub hnub ci cell uas ua tiav cov ntaub ntawv ua tau zoo ntawm 39.5 feem pua ​​​​hauv 1 lub hnub lub teeb pom kev zoo thoob ntiaj teb, rhuav tshem lub ntiaj teb cov ntaub ntawv rau hnub ci cell efficiency. , cov txiaj ntsig tau luam tawm hauv phau ntawv journal "Joule".

Raws li kev tshaj tawm xov xwm, kev hloov dua siab tshiab tau ua tiav nyob rau hauv hnub ci sib piv lub teeb. Txawm hais tias yav dhau los cov ntaub ntawv rau kev ua tau zoo ntawm kev sim hnub ci cell yog 47.1 feem pua, nws yuav tsum tau hais tias cov ntaub ntawv no tau ua tiav nyob rau hauv lub teeb tsis tshua muaj siab. 39.5 feem pua ​​​​cov ntaub ntawv ua haujlwm tau tsim lub sijhawm no tau tsim nyob rau hauv 1 hnub ci ntiaj teb teeb pom kev zoo.

"Lub hlwb tshiab muaj txiaj ntsig zoo dua thiab yooj yim dua rau kev tsim, thiab tuaj yeem siv ntau yam kev siv, xws li ib puag ncig uas lub teeb muaj kev txwv ntau," NREL tus thawj coj tshawb fawb thiab tus kws tshawb fawb laus Myles Steiner tau hais.

Hom tshiab ntawm lub hnub ci cell no yog tsim los ntawm ib qho qauv hu ua inverted metamorphic multijunction (IMM) cell. Nws muaj peb yam uas tsim hluav taws xob tam sim no nyob rau hauv teb rau lub teeb. Qhov tseem ceeb, txhua qhov kev sib txuas no yog ua los ntawm cov khoom sib txawv: Gallium Indium Phosphide nyob rau sab saum toj, Gallium Arsenide ntawm qhov chaw, thiab Gallium Indium Arsenide nyob rau hauv qab. Lawv muaj peev xwm nqus tau ntau yam wavelengths, yog li lub roj teeb tuaj yeem ntes ntau lub zog los ntawm tag nrho cov spectrum.

Tsis tas li ntawd, cov kws tshawb fawb tau siv "quantum wells" hauv interlayer, uas tso cai rau lawv ua tiav cov ntaub ntawv hloov dua siab tshiab. Thaum cov kws tshawb fawb sandwiched txheej txheej ntawm ob lwm cov ntaub ntawv uas muaj qhov sib txawv ntawm qhov sib txawv, lawv muaj peev xwm kaw cov electrons hauv ob qhov ntev, tso cai rau cov khoom mus ntes ntau lub teeb rov qab.

Raws li tsab ntawv ceeb toom los ntawm New Atlas, lub interlayer ntawm xws li lub hnub ci hlwb muaj li 300 quantum qhov dej, uas zoo heev txhim kho tag nrho cov efficiency. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias kev tsim cov roj teeb hom no tseem kim, uas tau ua rau muaj kev lag luam rov ua dua tshiab rau qee lub sijhawm. Ua ntej hom roj teeb tshiab no tuaj yeem nthuav dav, cov kws tshawb fawb yuav tsum tau txo cov nqi thiab nrhiav kev siv tshiab.