Tau qhov twg los: scitechdaily.com
Rice University cov ntaub ntawv pov thawj cov kws tshawb fawb siv cov khoom xyaw inorganic kom txwv qhov tsis xws luag, khaws cov ua haujlwm tau zoo.
Rice University cov kws tshawb fawb ntseeg tias lawv tau dhau los ua ib qho kev cuam tshuam loj uas cia lub hlwb hnub ci los ntawm kev ua tiav kev siv lub ntsiab lus.
Kws tshawb fawb University postdoctoral tshawb fawb Jia Liang tuav perovskite hnub ci hlwb tsim nrog txhua cov ntaub ntawv hauv. Kev tswj cov kab mob hauv lub hlwb los ntawm kev tshem tawm cov organic ua rau lawv muaj zog thaum khaws cia lawv lub zog hloov dua siab tshiab. Credit: Jeff Fitlow / Rice University
Los ntawm cov tswv yim kev siv ntawm lub keeb indium los hloov qee cov hmoov txhuas hauv perovskites, Cov kws paub txog cov khoom noj khoom haus tus kws tshawb fawb Jun Lou thiab nws cov npoj yaig ntawm Lub Tsev Kawm Ntawv Brown ntawm Engineering tau hais tias lawv muaj peev xwm zoo dua qub los ua qhov tsis xws luag hauv cesium-lead-iodide solar cells uas cuam tshuam rau qhov sib txuas txoj kab sib xyaw, ib qho cuab yeej tseem ceeb hauv lub hnub ci cell efficiency.
Raws li kev pab cuam sab, lub chaw kuaj ntshav tshiab khiv tuaj yeem tsim cua thiab qhib rau lub hlis ntau dua li hnub nrog lub hnub ci hloov hluav taws xob ua haujlwm tau qis dua 12%.
Pab pawg neeg tau qhab nia tau tshaj tawm hauv Cov Khoom Siv Ua Ntej nag hmo, Kaum Ib Hlis 4, 2019.
Perovskites yog cov muaju nrog cov cubelike ntxaij uas paub tias muaj lub teeb txig txuag tau zoo, tab sis cov ntaub ntawv zoo li yuav cuam tshuam los ntawm lub teeb, av noo, thiab kub.
Tsis Yog Cov Neeg perovskites, Cov Lou hais.
Nws tau hais tias "Los ntawm peb txoj kev xav, qhov no yog qhov tshiab thiab kuv xav tias nws sawv cev rau qhov kev ua tiav tseem ceeb," "Qhov no txawv ntawm cov neeg ib txwm suav, cov neeg siv hluav taws xob perovskites tau sib tham txog 10 lub xyoo - cov inorganic-organic hybrids uas muab qhov ua tau zoo tshaj plaws rau koj kom txog thaum kaw, txog 25%. Tab sis qhov teeb meem nrog hom khoom ntawd yog nws qhov tsis yooj yim.
Lou hais tias "Cov kws txawj tsim qauv tsim qauv capping txheej thiab khoom los tiv thaiv cov khoom zoo ntawd, los ntawm ib puag ncig," Lou hais. “Tab sis nws nyuaj rau qhov ua kom sib txawv nrog cov khoom siv tsis ruaj khov lawv tus kheej. Yog vim li cas peb thiaj npaj ua tej yam txawv. ”
Lub koob thaij duab hluav taws xob tsom qhia pom qhov hla ntu ntawm qhov the-inorganic perovskite hnub ci xovtooj ntawm tes tsim ntawm University University. Los ntawm sab saum toj, cov khaubncaws sab nraud povtseg yog cov carbon electrode, perovskite, titanium oxide, fluorine-doped tin oxide, thiab iav. Cov nplai bar sib npaug 500 nanometers. Credit: Lou Group / Rice University
Cov kws tshawb nrhiav tom qab ua qoob loo thiab cov kws sau ntawv ua ke Jia Liang thiab nws pab neeg tsim thiab sim perovskite hnub ci hlwb ntawm inorganic cesium, hmoov txhuas, thiab iodide, lub hlwb heev uas zoo li poob sai vim los ntawm cov tsis xws luag. Tab sis los ntawm kev ntxiv bromine thiab indium, cov kws tshawb nrhiav tau yauv cov tsis xws luag hauv cov khoom siv, nce cov ua haujlwm siab dua 12% thiab qhov hloov mus rau 1,20 volts.
Raws li ib qho khoom plig, cov khoom siv ua pov thawj tau tshwjxeeb ruaj khov. Cov qog tau npaj nyob rau hauv qhov chaw muaj huab cua nyob, sawv ntsug hauv Houston lub tsev av noo, thiab cov xov tooj ntawm tes tau ruaj khov nyob rau hauv huab cua rau ntau tshaj li ob lub hlis, zoo tshaj li ob peb hnub uas cov dawb cesium-lead-iodide hlwb tau kav.
Lub tswv yim pom kev ua kom pom tseeb txhua qhov tsim muaj cov perovskite hnub ci cell tsim los ntawm cov ntaub ntawv cov kws tshawb fawb ntawm University University. Credit: Lou Group / Rice University
Liang hais tias "qhov ua tau zoo tshaj plaws rau cov khoom siv no yuav yog kwv yees li 20%, thiab yog tias peb tuaj yeem mus txog, qhov no tuaj yeem yog cov khoom lag luam." "Nws muaj qhov zoo dua li silicon-based hnub ci hlwb vim hais tias synthesis yog qhov pheej yig heev, nws yog kev daws teebmeem thiab yooj yim rau kev ntsuas. Yeej, koj tsuas yog kis nws rau ntawm ib txheej substrate, cia nws qhuav, thiab koj muaj koj lub hnub ci cell. "
Kev Xa Mus: "Kev Tsis Txaus Ntseeg ‐ Engineering ‐ Ua Tau Siab ‐ Efficiency Txhua ‐ Inorganic Perovskite Hnub Ci Cell" los ntawm Jia Liang, Xiao Han, Ji ‐ Hui Yang, Boyu Zhang, Qiyi Fang, Jing Zhang, Qing Ai, Meredith M. Ogle, Tanguy Terlier, Angel A. Martí thiab Jun Lou, 4 Kaum Ib Hlis 2019, Cov Ntawv Siv Ua Ntej .
DOI: 10.1002 / adma.201903448
Co-sau ntawv ntawm daim ntawv yog Xiao Han ntawm Northwestern Polytechnical University, Suav; Ji-Hui Yang ntawm Fudan University, Shanghai; thiab Rice cov tub ntxhais kawm ua tiav Boyu Zhang, Qiyi Fang, Meredith Ogle, tus kws tshawb fawb tom tsev kawm ntawv Jing Zhang, tus kws tshawb fawb kawm Qing Ai, tus kws tshawb fawb tshwj xeeb Tanguy Terlier thiab Angel Martí, tus kws tshaj lij ntawm cov kws qhia txog tshuaj lom neeg, ntawm bioengineering thiab ntawm cov ntaub ntawv science thiab nanoengineering. Lou yog tus xibfwb ntawm cov khoom siv science thiab nanoengineering, thiab ntawm chemistry.
Peter M. thiab Ruth L. Nicholas Postdoctoral Sib Raug Zoo hauv Nanotechnology, Welch Foundation, Tuam Tshoj Scholarship Council thiab National Science Foundation tau txhawb nqa txoj kev tshawb fawb no.
