Cov kws tshawb fawb txuas ntxiv thawbhnub ci vaj huam sib luagkom ua tau zoo dua, thiab muaj cov ntaub ntawv tshiab los qhia: Lub hnub ci cell tshiab ua tiav qhov ua tau zoo ntawm 39.5 feem pua hauv cov qauv 1-hnub ntiaj teb teeb pom kev zoo.
Lub cim 1-hnub tsuas yog ib txoj hauv kev los ntsuas lub hnub ci ruaj khov, tam sim no yuav luag 40% ntawm cov hluav taws xob tuaj yeem hloov mus rau hauv hluav taws xob.Cov ntaub ntawv yav dhau los rau hom no.hnub ci vaj huam sib luagcov khoom yog 39.2% efficiency.
Muaj ntau hom hnub ci hnub ci nyob ib puag ncig tshaj li qhov koj xav tau.Cov hom siv ntawm no yog triple-junction III-V tandem solar cells, feem ntau xa mus rau hauv satellites thiab spacecraft, txawm hais tias lawv kuj muaj peev xwm zoo rau hauv av.
"Lub hlwb tshiab muaj txiaj ntsig zoo dua thiab yooj yim dua rau kev tsim, thiab tuaj yeem muaj txiaj ntsig zoo rau ntau yam kev siv tshiab, xws li kev txwv tsis pub siv ntau lossis siv qhov chaw qis qis," said physicist Myles Steiner ntawm National Renewable Energy Laboratory.”NREL) in Colorado.
Nyob rau hauv cov nqe lus ntawm lub hnub ci kev ua tau zoo, "triple junction" ib feem ntawm qhov sib npaug yog qhov tseem ceeb.Txhua lub pob caus yog concentrated nyob rau hauv ib feem ntawm lub hnub ci spectral ntau yam, uas txhais tau hais tias tsawg lub teeb ploj thiab tsis siv.
Kev ua tau zoo yog txhim kho ntxiv los ntawm kev siv lub npe hu ua "quantum well" technology.Lub physics qab lawv yog qhov nyuaj, tab sis lub tswv yim dav dav yog tias cov ntaub ntawv tau ua tib zoo xaiv thiab ua kom zoo dua qub, thiab nyias li sai tau.Qhov no cuam tshuam rau qhov sib txawv band, yam tsawg kawg nkaus ntawm lub zog yuav tsum tau excite electrons thiab cia tam sim no ntws.
Nyob rau hauv cov ntaub ntawv no, peb junctions muaj xws li gallium indium phosphide (GaInP), gallium arsenide (GaAs) nrog ib co ntxiv quantum zoo efficiency, thiab gallium indium arsenide (GaInAs).
"Ib qho tseem ceeb tshaj plaws yog tias thaum GaAs yog cov khoom siv zoo heev thiab feem ntau siv hauv III-V multijunction hlwb, nws tsis muaj qhov tseeb bandgap rau peb lub hlwb sib txuas, uas txhais tau hais tias lub photocurrent ntawm peb lub hlwb tsis zoo, ” hais tias NREL physicist Ryan France.
"Ntawm no, peb tau hloov kho qhov sib txawv band los ntawm kev siv quantum qhov dej, thaum tswj cov khoom zoo, uas ua rau cov cuab yeej no thiab muaj peev xwm siv tau lwm yam."
Qee qhov kev txhim kho ntxiv hauv cov xovtooj tshiab no suav nrog nce lub teeb pom kev zoo yam tsis muaj qhov cuam tshuam ntawm qhov poob.Ob peb lwm yam kev tweaks tau ua kom txo qis kev txwv.
Qhov no yog qhov siab tshaj 1-hnub efficiency ntawm ib qho twghnub ci vaj huam sib luagcell ntawm cov ntaub ntawv, txawm hais tias peb tau pom cov kev ua tau zoo dua los ntawm kev siv hluav taws xob ntau dua hnub ci.Thaum nws yuav siv sij hawm rau cov thev naus laus zis txav los ntawm qhov chaw sim mus rau cov khoom siv tiag tiag, qhov kev txhim kho muaj txiaj ntsig zoo siab heev.
Cov hlwb kuj tau sau tseg qhov ua tau zoo ntawm 34.2 feem pua ntawm qhov chaw ua haujlwm, uas yog qhov lawv yuav tsum ua tiav thaum siv nyob rau hauv orbit.Lawv qhov hnyav thiab tsis kam mus rau cov khoom siv hluav taws xob siab ua rau lawv tshwj xeeb rau txoj haujlwm no.
"Raws li cov no yog 1-hnub solar cells uas muaj txiaj ntsig zoo tshaj plaws thaum lub sijhawm sau ntawv, cov hlwb no kuj tau teeb tsa tus qauv tshiab rau kev ua tiav ntawm tag nrho cov thev naus laus zis photovoltaic," cov kws tshawb fawb tau sau rau hauv lawv cov ntawv luam tawm.
Post lub sij hawm: May-24-2022
