Yuav ua li cas kom ruaj khov mus ntev kev ua tau zoo ntawm perovskite solar cells?

Nyob rau hauv xyoo tas los no, cov ntaub ntawv perovskite tau dhau los ua tus neeg sib tw nrov rau hnub ci zog. Txawm li cas los xij, ib qho ntawm nws qhov teeb meem tseem ceeb yog tias nws yooj yim decomposed nyob rau hauv tshav ntuj ncaj qha. Qhov xwm zoo yog tias ib pab neeg tshawb fawb ntawm University of California, Los Angeles (UCLA) nyuam qhuav qhia txog cov txheej txheem tshiab rau perovskite photovoltaic panels featuring txhim kho kev ruaj ntseg nyob rau hauv tshav ntuj.

Raws li ib tsab xov xwm tsis ntev los no tau luam tawm nyob rau hauv phau ntawv journal Nature, UCLA cov kws tshawb fawb tau pom lub hauv paus ntawm qhov teeb meem thiab tau thov ib qho kev daws teeb meem yooj yim uas tuaj yeem siv rau hauv cov txheej txheem tsim khoom.

Tau ntev, cov ntaub ntawv silicon-based tau ua haujlwm ntau heev hauv kev ua haujlwm ntawm lub hnub ci, thiab ob peb cov ntaub ntawv tuaj yeem phim lawv raws li kev ua haujlwm, durability, nqi thiab lwm yam.

Txawm li cas los xij, nyob rau hauv xyoo tas los no, nrog kev nce ntawm kev tshawb fawb hlau halide, perovskites tau loj hlob sai rau hauv cov neeg sib tw loj - ntxiv rau qhov ze rau qhov ua tau zoo ntawm cov khoom siv silicon, nws kuj sib dua, hloov tau yooj yim, thiab tsis tshua muaj nqi.

Ib qho teeb meem nrog cov ntaub ntawv perovskite, txawm li cas los xij, yog tias lawv tau yooj yim decomposed nyob rau hauv tshav ntuj ncaj qha, yog li lawv cov txiaj ntsig tau qis dua lub sijhawm.

Cov kev sim yav dhau los los ntawm cov kws tshawb fawb los ntxiv macromolecules, cov xim qub, cov pa roj carbon nanodots ua los ntawm cov plaub hau, ob-seem additives, kua txob tebchaw, thiab txawm tias quantum dot thev naus laus zis tau sim khaws cov teeb meem ua haujlwm ntev ntawm perovskite hnub ci hlwb.

Hmoov zoo, pab pawg UCLA tau pom cov txheej txheem tom qab decomposition ntawm perovskite cov ntaub ntawv. Ironically, qhov tshwm sim hloov mus rau qhov tshwm sim ntawm cov txheej txheem kho saum npoo tsim los kho qhov tsis xws luag thiab ua rau lawv ua tau zoo.

Nws tau tshaj tawm tias cov txheej txheem cuam tshuam nrog txheej txheej ntawm cov organic ions, tab sis pab pawg tshawb fawb pom qhov tsis zoo ntawm kev ua li ntawd - lub zog nqa hluav taws xob yuav khaws cia rau saum npoo ntawm perovskite photovoltaic vaj huam sib luag.

Txhawm rau ua qhov teeb meem loj dua, qhov xwm txheej no cuam tshuam rau kev teeb tsa ntawm perovskite atoms, thaum kawg ua rau lawv tawg dhau sijhawm.

Raws li qhov no, UCLA pab pawg tau xav txog kev ntxiv cov ion zoo thiab tsis zoo hauv cov txheej txheem kho saum npoo los daws qhov teeb meem no.

Tsis tsuas yog qhov no pab ua kom lub ntsej muag nruab nrab thiab ruaj khov, nws tsis cuam tshuam nrog cov txheej txheem tiv thaiv thawj zaug.

Txhawm rau kuaj cov txiaj ntsig ntawm txheej txheem txheej txheej tshiab, cov kws tshawb fawb tau ua qhov simulated nrawm nrawm ntawm kev txhim kho perovskite hnub ci vaj huam sib luag nyob rau hauv ib puag ncig huab cua ci ntsa iab.

Nws tau pom tias cov thev naus laus zis tshiab tau tso cai rau lub vaj huam sib luag perovskite photovoltaic kom tswj tau qhov kev hloov pauv mus txog 87 feem pua ​​tom qab 2, 000 teev. Hauv pab pawg tswj tsis tau kho, nws poob rau 65 feem pua.

Thaum kawg, kev tshawb fawb co-sau Shaun Tan tau hais tias: "Peb lub hnub ci perovskite tau ua tiav qhov kev ruaj khov siab tshaj plaws paub txog hnub no."

Nyob rau tib lub sijhawm, pab pawg UCLA kuj tau tsim cov kev paub tshiab hauv lub hauv paus uas cov zej zog tuaj yeem txhim kho thiab txhim kho ntau lub dav hlau no kom ua tiav cov qauv tsim ntawm perovskite solar cells ruaj khov dua.