Izinto ezintsha ezacile nezithambile ze-semiconductor zingasetshenziswa ukwenza i-micro andAmadivayisi we-nano optoelectronic
izintambo, ugqinsi lwama-nanometer ambalwa kuphela, izici ezinhle zokubuka… Intatheli ithole e-Nanjing University of Technology ukuthi iqembu locwaningo likaprofesa woMnyango we-physics wesikole lilungise i-ultra-mncane ephezulu yekhwalithi ephezulu ye-iodide crystal eholayo enezinhlangothi ezimbili, futhi ngayo ukuze kuzuzwe ukulawulwa kwezakhiwo zokukhanya ze-two-dimensional izakhiwo ze-sodium-dimensional zokwenziwa kwensimbi entsha ye-sulfide ehlinzeka ngombono omusha we-sodium. amaseli kanyeama-photodetectors. Imiphumela yashicilelwa kumagazini wakamuva wephephabhuku lamazwe ngamazwe i-Advanced Materials.
“Ama-nanosheet omthofu omthofu omningi kakhulu esiwalungiselele okokuqala, igama lobuchwepheshe lithi' igebe elibanzi le-atomically gap ye-two-dimensional PbI2 crystals', okuwumsebenzi wesemiconductor ozacile kakhulu enogqinsi lwama-nanometer ambalwa kuphela.” U-Sun Yan, umbhali wokuqala waleli phepha kanye nekhandidethi lobudokotela e-Nanjing University of Technology, uthe basebenzise indlela yesixazululo ukuhlanganisa, enezidingo zemishini ephansi kakhulu futhi enezinzuzo zokulula, okusheshayo nokusebenza kahle, futhi engakwazi ukuhlangabezana nezidingo zokulungiswa kwezinto ezibonakalayo zendawo enkulu kanye nesivuno esikhulu. Ama-nanosheet e-iodide omthofu ahlanganisiwe anomumo ovamile ongunxantathu noma oyi-hexagonal, usayizi omaphakathi wama-microns angu-6, indawo ebushelelezi kanye nezinto ezinhle zokubona.
Abacwaningi bahlanganisa le nanosheet encane kakhulu ye-iodide yomthofu nama-sulfide ensimbi enezinhlangothi ezimbili, eklanywe ngokwenziwa, yawanqwabelanisa ndawonye, futhi bathola izinhlobo ezahlukene zama-heterojunctions, ngoba amazinga wamandla ahlelwa ngezindlela ezihlukene, ngakho iodide yomthofu ingaba nemiphumela ehlukene ekusebenzeni kwe-optical kwenguquko ye-sulfide metal ehlukene enezinhlangothi ezimbili. Lesi sakhiwo sebhendi singathuthukisa ngempumelelo ukusebenza kahle okukhanyayo, okulungele ukukhiqizwa kwamadivayisi afana nama-diode akhipha ukukhanya nama-laser, asetshenziswa ekuboniseni nasekukhanyeni, futhi angasetshenziswa emkhakheni wama-photodetectors kanye nama-laser.Amadivayisi we-photovoltaic.
Le mpumelelo ibona ukulawulwa kwezici zokubona zezinto ze-two-dimensional transition metal sulfide nge-ultra-thin lead iodide. Uma kuqhathaniswa namadivayisi endabuko e-optoelectronic asekelwe ezintweni ezisekelwe ku-silicon, le mpumelelo inezici zokuguquguquka, i-micro ne-nano. Ngakho-ke, ingasetshenziswa ekulungiseleleni ukuguquguquka nokuhlanganisaamadivaysi e-optoelectronic. Inethuba elibanzi lohlelo lokusebenza emkhakheni wemishini ehlanganisiwe ye-micro kanye ne-nano optoelectronic, futhi inikeza umbono omusha wokukhiqiza amaseli elanga, ama-photodetectors nokunye.
Isikhathi sokuthumela: Sep-20-2023