Nyias thiab mos tshiab cov ntaub ntawv semiconductor tuaj yeem siv los ua micro thiabnano optoelectronic pab kiag li lawm
roperties, thickness ntawm ob peb nanometers, zoo kho qhov muag khoom… Tus reporter kawm los ntawm Nanjing University of Technology hais tias cov kev tshawb fawb pab pawg neeg ntawm lub physics Department ntawm lub tsev kawm ntawv tau npaj ib tug ultra-thin high-zoo ob-dimensional lead iodide crystal. , thiab dhau los ntawm nws kom ua tiav cov kev cai ntawm cov khoom siv kho qhov muag ntawm ob sab kev hloov pauv hlau sulfide cov ntaub ntawv, uas muab lub tswv yim tshiab rau kev tsim cov hnub ci hlwb thiabphotodetectors. Cov txiaj ntsig tau luam tawm nyob rau hauv qhov teeb meem tshiab kawg ntawm International Journal Advanced Materials.
"Lub ultra-thin lead iodide nanosheets peb tau npaj thawj zaug, cov lus qhia yog 'atomically tuab dav band sib txawv ob-seem PbI2 muaju', uas yog ib qho ultra-thin semiconductor khoom nrog ib tug tuab ntawm tsuas yog ob peb nanometers. ” Sun Yan, thawj tus kws sau ntawv thiab tus kws tshaj lij tus neeg sib tw ntawm Nanjing University of Technology, tau hais tias lawv siv txoj kev daws teeb meem los ua ke, uas muaj cov khoom siv tsawg heev thiab muaj qhov zoo ntawm qhov yooj yim, ceev thiab ua tau zoo, thiab tuaj yeem ua tau raws li qhov xav tau ntawm cov cuab yeej siv. kev xav tau ntawm thaj chaw loj thiab kev npaj cov khoom siv high-yield. Cov khoom siv lead ua iodide nanosheets muaj cov duab peb sab lossis hexagonal, qhov nruab nrab loj ntawm 6 microns, du nto thiab zoo kho qhov muag.
Cov kws tshawb fawb tau ua ke no ultra-thin nanosheet ntawm txhuas iodide nrog ob-seem hloov pauv hlau sulfides, tsim tsim, muab lawv ua ke, thiab tau txais ntau hom heterojunctions, vim hais tias lub zog theem tau teem rau hauv ntau txoj kev, yog li txhuas iodide tuaj yeem muaj qhov sib txawv. ntawm kev ua haujlwm kho qhov muag ntawm qhov sib txawv ntawm ob sab kev hloov pauv hlau sulfides. Cov qauv band no tuaj yeem txhim kho lub teeb pom kev zoo, uas yog qhov tsim nyog rau kev tsim cov khoom siv xws li lub teeb-emitting diodes thiab lasers, uas yog siv rau hauv cov zaub thiab teeb pom kev zoo, thiab tuaj yeem siv rau hauv thaj chaw ntawm photodetectors thiabcov khoom siv photovoltaic.
Qhov kev ua tiav no paub txog kev tswj hwm ntawm cov khoom siv kho qhov muag ntawm ob sab kev hloov pauv hlau sulfide cov ntaub ntawv los ntawm ultra-thin lead iodide. Piv nrog rau cov khoom siv optoelectronic tsoos raws li cov khoom siv silicon, qhov kev ua tiav no muaj cov yam ntxwv ntawm kev yoog raws, micro thiab nano. Yog li ntawd, nws tuaj yeem siv rau kev npaj ntawm kev hloov pauv thiab kev sib xyaw ua kecov khoom siv optoelectronic. Nws muaj kev cia siab rau daim ntawv thov dav hauv thaj chaw ntawm kev sib xyaw micro thiab nano optoelectronic li, thiab muab lub tswv yim tshiab rau kev tsim cov hnub ci hlwb, photodetectors thiab lwm yam.
Post lub sij hawm: Sep-20-2023