CdTeS Hnub Ci Cell Ua tiav 20 feem pua Kev Hloov Ua Haujlwm Zoo Los ntawm Band Gap Gradient
Feb 02, 2023
Thawj zaug, Asmeskas cov kws tshawb fawb tau siv bandgap gradients rau CdTe photovoltaic hlwb. Qhov tshwm sim yog qhov nce hauv lawv cov kev ua tau zoo thiab qhib qhov hluav taws xob hluav taws xob, nrog rau qis qis tsis muaj hluav taws xob sib txuas.
Cov kws tshawb fawb los ntawm University of Toledo thiab US Department of Energy's Oak Ridge National Laboratory tau siv bandgap gradients thawj zaug los txhim kho kev ua haujlwm ntawm kev lag luam tin (IV) oxide raws li cadmium selenium telluride (CdSeTe) solar cells 2) nrog tsis muaj txheej.
Cov kws tshawb fawb piav txog lawv qhov kev tshawb pom ntawm 20 feem pua ntawm kev ua tau zoo ntawm polycrystalline Cd (Se, Te) nyias-zaj duab xis hnub ci hlwb nrog cov txheej txheem gradient ze rau pem hauv ntej hlws ris, uas tau luam tawm hauv Nature Communications. Lawv hais tias kev lag luam SnO2 buffers yog qhov ruaj khov thiab tuaj yeem tsim tau yooj yim nrog cov khoom siv hluav taws xob xav tau.
"Ua tsaug rau cov txiaj ntsig zoo no, SnO2 tau siv los ua tiav hauv CdTe fabrication rau ntau xyoo," lawv hais tias, tsis ntev los no cov tshuab tsis tau hloov los ntawm zinc-magnesium oxide (ZMO) Qhov teeb meem tseem ceeb yog cov hluav taws xob tsawg ntawm ZMO tsis. txheej, uas yog ib qho nyuaj rau txhim kho txawm tias tsis yog-intrinsic doping.
Pab neeg Asmeskas tau hais tias bandgap gradient tau ua tiav rau lwm hom nyias-zaj duab xis hnub ci nrog lub hom phiaj ntawm kev nce lawv qhov qhib-circuit voltage, ntxiv tias nws yuav tsum tau siv hauv CdSeTe li los ntawm kev ntxiv txheej nyias ntawm cadmium sulphide (CdS. ) mus rau pem hauv ntej junction cheeb tsam thaum tsis txhob tsim teeb meem interfaces.
"Tus yuam sij rau qhov kev vam meej no yog qhov sib ntxiv ntawm oxide CdS thiab CdSe txheej ua ntej tso CdTe absorber txheej," lawv hais.
Cov kws tshawb fawb tau tsim cov txheej txheem cell 2 no, cov txheej txheem oxidised CdS thiab CdSe, CdTe txheej thiab tooj liab (I) thiocyanate (I) (cus cn) kab noj hniav txheej txheej siv cov pob tshab conductive oxide (TCO) txheej (SnO)
