Tau qhov twg los: solarindustrymag.com
Cov kws tshawb fawb ntawm US Department of Energy'sNational Renewable Energy Laboratory(NREL) tau tsim lub hnub ci cell nrog cov ntaub ntawv 39.5 feem pua kev ua tau zoo nyob rau hauv 1- hnub ci hluav taws xob thoob ntiaj teb. Qhov no yog qhov ua tau zoo tshaj plaws hnub ci cell ntawm txhua yam, ntsuas siv tus qauv 1- hnub ci.
"Lub xovtooj tshiab no muaj txiaj ntsig zoo dua thiab muaj cov qauv tsim yooj yim uas yuav muaj txiaj ntsig zoo rau ntau yam kev siv tshiab, xws li cov ntawv thov kev txwv hauv cheeb tsam lossis cov chaw siv hluav taws xob tsawg," hais Myles Steiner, tus kws tshawb fawb laus hauv NREL's High-Efficiency. Crystalline Photovoltaics (PV) Pawg thiab tus thawj coj tshawb xyuas ntawm qhov project. Nws ua haujlwm nrog NREL cov npoj yaig Ryan France, John Geisz, Tao Song, Waldo Olavarria, Michelle Young thiab Alan Kibbler.
Cov ntsiab lus ntawm txoj kev loj hlob tau piav qhia nyob rau hauv daim ntawv "Triple-hluav taws xob hnub ci hlwb nrog 39.5 feem pua ntawm cov av thiab 34.2 feem pua qhov chaw ua haujlwm tau qhib los ntawm cov tuab quantum zoo superlattices," uas tshwm nyob rau lub Tsib Hlis qhov teeb meem ntawm phau ntawv journal Joule.
NREL cov kws tshawb fawb yav dhau los tau teeb tsa cov ntaub ntawv hauv xyoo 2020 nrog 39.2 feem pua ua tau zoo rau lub hnub ci hluav taws xob siv III-V cov ntaub ntawv.
Ob peb lub hnub ci zoo tshaj plaws tsis ntev los no tau ua raws li kev hloov pauv metamorphic multijunction (IMM) architecture uas tau tsim los ntawm NREL. Qhov kev txhim kho tshiab triple-hluav taws xob IMM hnub ci cell tam sim no tau ntxiv rau Daim Ntawv Tshawb Fawb Zoo Tshaj Plaws-Cell Efficiency Chart. Daim ntawv qhia, uas qhia txog kev ua tiav ntawm kev sim hnub ci hlwb, suav nrog yav dhau los peb-txoj kev IMM cov ntaub ntawv ntawm 37.9 feem pua tau tsim nyob rau xyoo 2013 los ntawm Sharp Corporation ntawm Nyiv.
Kev txhim kho hauv kev ua haujlwm tau ua raws li kev tshawb fawb hauv "quantum well" solar cells, uas siv ntau txheej nyias nyias los hloov kho lub hnub ci zog. Cov kws tshawb fawb tau tsim lub quantum zoo hnub ci cell nrog kev ua haujlwm tsis tau pom dua thiab siv nws mus rau hauv ib lub cuab yeej nrog peb qhov kev sib txuas nrog cov kab sib txawv, qhov twg txhua qhov kev sib txuas tau raug kho kom ntes thiab siv cov kab sib txawv ntawm lub hnub ci spectrum.
III-V cov ntaub ntawv, yog li lub npe vim hais tias ntawm qhov chaw uas lawv poob rau ntawm lub sij hawm lub sij hawm, span ib tug ntau yam ntawm lub zog bandgaps uas tso cai rau lawv mus rau lub hom phiaj sib txawv ntawm lub hnub ci spectrum. Sab saum toj hlws ris yog ua los ntawm gallium indium phosphide (GaInP), nruab nrab ntawm gallium arsenide (GaAs) nrog quantum qhov dej, thiab hauv qab ntawm lattice-mismatched gallium indium arsenide (GaInAs). Txhua yam khoom tau ua kom zoo tshaj plaws nyob rau ntau xyoo ntawm kev tshawb fawb.
"Ib lub ntsiab lus tseem ceeb 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-hluav taws xob, txhais tau hais tias qhov sib npaug ntawm photocurrents ntawm peb lub hlwb tsis zoo. , "lus Fabkis, tus kws tshawb fawb laus thiab tus tsim qauv ntawm tes. "Ntawm no, peb tau hloov kho lub bandgap thaum tuav cov khoom zoo los ntawm kev siv quantum qhov dej, uas ua rau cov cuab yeej no thiab muaj peev xwm siv tau lwm yam."
Cov kws tshawb fawb tau siv quantum qhov dej nyob rau hauv nruab nrab txheej los txuas lub bandgap ntawm GaAs cell thiab ua kom lub teeb ntawm lub cell nqus tau. Qhov tseem ceeb, lawv tsim optically tuab quantum zoo li yam tsis muaj hluav taws xob loj. Lawv kuj tau kawm yuav ua li cas rau anneal GaInP sab saum toj cell thaum lub sij hawm txoj kev loj hlob nyob rau hauv thiaj li yuav txhim kho nws cov kev ua tau zoo thiab yuav ua li cas kom txo tau cov threading dislocation ceev nyob rau hauv lattice-mismatched GaInAs, sib tham nyob rau hauv cais tawm. Ua ke, peb cov ntaub ntawv no qhia txog kev tsim cov cell tshiab.
III-V hlwb paub txog lawv cov kev ua haujlwm siab, tab sis cov txheej txheem tsim tau ib txwm ua tau kim. Txog tam sim no, III-V hlwb tau siv los siv lub zog siv xws li chaw satellites, tsheb tsis muaj neeg tsav tsheb thiab lwm yam kev siv niche. Cov kws tshawb fawb ntawm NREL tau ua haujlwm kom txo qis cov nqi tsim khoom ntawm III-V hlwb thiab muab lwm cov qauv ntawm tes, uas yuav ua rau cov hlwb no kev lag luam rau ntau yam kev siv tshiab.
Tus tshiab III-V cell kuj tau sim seb nws yuav ua tau zoo npaum li cas hauv qhov chaw siv, tshwj xeeb tshaj yog rau kev sib txuas lus satellites, uas yog siv los ntawm lub hnub ci hlwb thiab rau qhov kev ua haujlwm siab ntawm tes yog qhov tseem ceeb thiab tuaj ntawm 34.2 feem pua rau qhov pib-ntawm- kev ntsuas lub neej. Cov qauv tsim tam sim no ntawm cov xov tooj ntawm tes yog tsim nyog rau cov cheeb tsam uas tsis tshua muaj hluav taws xob, thiab kev siv hluav taws xob ntau dua tuaj yeem ua rau muaj kev txhim kho ntxiv ntawm cov qauv ntawm tes.
NREL yog US Department of Energy lub chaw kuaj mob tseem ceeb hauv tebchaws rau kev siv hluav taws xob txuas ntxiv thiab kev siv hluav taws xob tshawb fawb thiab kev tsim kho. NREL yog ua haujlwm rau Lub Chaw Haujlwm Hluav Taws Xob los ntawm Alliance for Sustainable Energy LLC.
