Cov kws tshawb fawb Danish tau tshaj tawm tias kev kho mob uas tsis yog-fullerene-raws li cov organic solar cells nrog vitamin C muab cov tshuaj tiv thaiv antioxidant uas txo cov txheej txheem degradative tshwm sim los ntawm tshav kub, lub teeb, thiab oxygen. Lub xovtooj tau ua tiav lub zog hloov pauv ntawm 9.97%, qhib qhov hluav taws xob ntawm 0.69 V, luv-circuit tam sim no ceev ntawm 21.57 mA / cm2, thiab cov khoom ntim ntawm 66%.
Ib pab pawg ntawm cov kws tshawb fawb los ntawm University of Southern Denmark (SDU) nrhiav kom phim cov kev nce qib uas tau ua hauv kev hloov hluav taws xob ua tau zoo rau cov hnub ci hlwb (OPV) ua nrogTsis yog-fullerene acceptor (NFA)cov ntaub ntawv nrog kev txhim kho stability.
Pab neeg no tau xaiv ascorbic acid, feem ntau hu ua vitamin C, thiab siv nws los ua ib txheej passivation ntawm zinc oxide (ZnO) electron thauj txheej (ETL) thiab txheej txheej txheej txheej txheej ntawm hauv NFA OPV hlwb tsim nrog cov txheej txheem inverted thiab ib semiconducting polymer (PBDB-T: IT-4F).
Cov kws tshawb fawb tau tsim cov cell nrog ib txheej indium tin oxide (ITO) txheej, ZnO ETL, vitamin C txheej, PBDB-T: IT-4F absorber, molybdenum oxide (MoOx) cov txheej txheem-xaiv, thiab nyiaj (Ag. ) hlau tiv tauj.
Cov pab pawg tau pom tias cov ascorbic acid tsim cov nyhuv photostabilizing, qhia tias kev ua haujlwm antioxidant alleviates cov txheej txheem degradative tshwm sim los ntawm kev raug oxygen, lub teeb thiab kub. Kev ntsuam xyuas, xws li ultraviolet-pom pom, impedance spectroscopy, lub teeb-nyob voltage thiab tam sim no ntsuas, kuj qhia tias vitamin C txo cov photobleaching ntawm NFA molecules thiab suppresses tus nqi recombination, sau tseg cov kev tshawb fawb.
Lawv qhov kev soj ntsuam pom tau tias, tom qab 96 teev ntawm kev tsis tu ncua photodegradation nyob rau hauv 1 Sun, cov khoom siv encapsulated uas muaj cov vitamin C interlayer khaws cia 62% ntawm lawv cov nqi qub, nrog rau cov khoom siv khaws cia tsuas yog 36%.
Cov txiaj ntsig kuj tau pom tias qhov kev ruaj ntseg nce tsis tau los ntawm tus nqi ntawm kev ua haujlwm. Cov cuab yeej sib tw tau ua tiav lub zog hloov pauv ntawm 9.97%, qhov qhib-circuit voltage ntawm 0.69 V, luv-circuit tam sim no ntom ntawm 21.57 mA / cm2, thiab cov khoom ntim ntawm 66%. Cov khoom siv siv tsis muaj vitamin C, nthuav tawm 9.85% kev ua haujlwm, qhov qhib-circuit voltage ntawm 0.68V, luv-circuit tam sim no ntawm 21.02 mA / cm2, thiab cov khoom ntim ntawm 68%.
Thaum nug txog kev lag luam muaj peev xwm thiab muaj peev xwm ua tau, Vida Engmann uas yog tus thawj coj ntawm pab pawgCenter for Advanced Photovoltaics thiab Thin-Film Energy Devices (SDU CAPE), hais rau pv magazine, "Peb cov khoom siv hauv qhov kev sim no yog 2.8 mm2 thiab 6.6 mm2, tab sis tuaj yeem ntsuas tau hauv peb lub yob-rau-yob lab ntawm SDU CAPE uas peb niaj hnub tsim OPV modules ib yam nkaus.
Nws tau hais tias txoj kev tsim khoom tuaj yeem ntsuas tau, taw qhia tias txheej txheej interfacial yog "khoom pheej yig uas yog soluble hauv cov kuab tshuaj ib txwm muaj, yog li nws tuaj yeem siv rau hauv cov txheej txheem yob-rau-yob txheej zoo li lwm cov txheej txheem" hauv ib OPV cell.
Engmann pom muaj peev xwm rau cov khoom siv ntxiv tshaj li OPV hauv lwm cov thev naus laus zis thib peb, xws li perovskite solar cells thiab dye-sensitized solar cells (DSSC). "Lwm cov organic / hybrid semiconductor-based technologies, xws li DSSC thiab perovskite solar cells, muaj cov teeb meem kev ruaj ntseg zoo ib yam li cov hnub ci hnub ci, yog li muaj lub caij nyoog zoo lawv tuaj yeem pab daws teeb meem kev ruaj ntseg hauv cov thev naus laus zis no," nws hais.
Lub xovtooj tau nthuav tawm hauv daim ntawv "Vitamin C rau Photo-Stable Non-fullerene-acceptor-Based Organic Solar Cells," luam tawm hauvACS Applied Material Interfaces.Thawj tus kws sau ntawv yog SDU CAPE's Sambathkumar Balasubramanian. Pab neeg no suav nrog cov kws tshawb fawb los ntawm SDU thiab Rey Juan Carlos University.
Saib ua ntej pab neeg muaj cov phiaj xwm rau kev tshawb fawb ntxiv rau hauv txoj hauv kev stabilization siv cov tshuaj antioxidants uas tshwm sim. "Nyob rau hauv lub neej yav tom ntej, peb yuav mus txuas ntxiv mus soj ntsuam nyob rau hauv cov kev taw qhia no," said Engmann hais txog kev cog lus rau kev tshawb fawb ntawm ib chav kawm tshiab ntawm antioxidants.
Post lub sij hawm: Lub Xya hli ntuj-10-2023