Cov kws tshawb fawb ntawm National Renewable Energy Laboratory (NREL) tau tsim lub hnub ci cell nrog qhov ua tau zoo ntawm ze li 50%. Lub rau -hluav taws xob hnub ci tam sim no tuav lub ntiaj teb cov ntaub ntawv rau lub hnub ci kev hloov pauv siab tshaj plaws ntawm 47.1%, uas tau ntsuas nyob rau hauv cov teeb pom kev zoo. Ib qho kev hloov pauv ntawm tib lub xov tooj ntawm tes kuj teeb tsa cov ntaub ntawv ua haujlwm nyob rau hauv ib qho - hnub ci ci ntawm 39.2%.
John Geisz, tus kws tshawb fawb tseem ceeb hauv High-Efficiency Crystalline Photovoltaics Group ntawm NREL thiab tus thawj coj sau ntawv tshiab ntawm cov ntaub ntawv - teeb tsa cell.
Daim ntawv, "Six-junction III-V solar cells nrog 47.1% conversion efficiency nyob rau hauv 143 suns concentration," tshwm nyob rau hauv phau ntawv journal Nature Energy. Geisz's co-sau yog NREL kws tshawb fawb Ryan France, Kevin Schulte, Myles Steiner, Andrew Norman, Harvey Guthrey, Matthew Young, Tao Song, thiab Thomas Moriarty.
Txhawm rau tsim lub cuab yeej, NREL cov kws tshawb fawb tau tso siab rau III-V cov ntaub ntawv -- yog li- hu vim lawv txoj hauj lwm ntawm lub rooj zaum ntev -- uas muaj ntau yam ntawm lub teeb haum. Txhua lub xovtooj ntawm 6 junctions (cov txheej txheem photoactive) yog tsim tshwj xeeb los ntes lub teeb los ntawm ib feem ntawm lub hnub ci spectrum. Cov cuab yeej muaj txog 140 tag nrho cov khaubncaws sab nraud povtseg ntawm ntau yam III-V cov ntaub ntawv los txhawb kev ua tau zoo ntawm cov junctions, thiab tseem yog peb zaug nqaim dua tib neeg cov plaub hau. Vim lawv cov txiaj ntsig zoo thiab tus nqi cuam tshuam nrog kev ua rau lawv, III-V hnub ci hlwb feem ntau yog siv rau lub zog satellites, uas khoom plig III-V qhov kev ua tau zoo tsis sib xws.
Nyob rau lub ntiaj teb, txawm li cas los xij, rau -hluav taws xob hnub ci yog qhov zoo- haum rau kev siv nyob rau hauv concentrator photovoltaics, hais tias Ryan France, co-tus sau thiab tus kws tshawb fawb hauv III-V Multijunction Group ntawm NREL.
"Ib txoj hauv kev los txo tus nqi yog txo qhov yuav tsum tau ua," nws hais tias, "Thiab koj tuaj yeem ua qhov ntawd los ntawm kev siv daim iav los ntes lub teeb thiab tsom lub teeb mus rau qhov taw tes. Tom qab ntawd koj tuaj yeem tawm mus nrog ib puas lossis ib txhiab ntawm cov khoom siv, piv rau lub tiaj tus - phaj silicon cell. Koj siv cov khoom siv semiconductor tsawg heev los ntawm kev tsom rau lub teeb. Ib qho ntxiv kom zoo dua yog tias lub teeb ci.
Fabkis tau piav qhia txog lub peev xwm rau lub hnub ci ntawm lub hnub ci kom tshaj 50% kev ua haujlwm raws li "ua tau zoo heev" tab sis qhov 100% kev ua haujlwm tsis tuaj yeem ncav cuag vim qhov kev txwv tseem ceeb los ntawm thermodynamics.
Geisz tau hais tias tam sim no qhov kev tshawb fawb tseem ceeb rau kev ua haujlwm siab tshaj 50% yog txo cov kev tiv thaiv kev tiv thaiv hauv lub xov tooj ntawm tes uas cuam tshuam qhov ntws ntawm tam sim no. Lub caij no, nws sau tseg tias NREL tseem koom nrog kev txo nqi ntawm III-V hnub ci hlwb, ua kom muaj kev lag luam tshiab rau cov khoom siv tau zoo.
Xov xwm los ntawm: Science Daily
Repost los ntawm: Tuam Tshoj Nuclear ITG Capita Management Company
Tiv tauj peb: 86+ 13325354424 /Linll@xmcnitg.com
