Zipangizo zatsopano zopyapyala komanso zofewa za semiconductor zingagwiritsidwe ntchito popanga zipangizo zazing'ono komanso zazing'ono za optoelectronic

Zipangizo zatsopano zopyapyala komanso zofewa za semiconductor zingagwiritsidwe ntchito popanga zinthu zazing'ono komanso zazing'ono.zipangizo zamagetsi za nano optoelectronic

ma roperties, makulidwe a nanometers ochepa okha, mawonekedwe abwino a kuwala… Mtolankhaniyo adaphunzira kuchokera ku Nanjing University of Technology kuti gulu lofufuza la pulofesa wa dipatimenti ya fizikisi ya sukuluyi lakonza kristalo woonda kwambiri wa iodide wamitundu iwiri, ndipo kudzera mwa iyo kuti akwaniritse malamulo a mawonekedwe a zinthu zachitsulo zosinthira zamitundu iwiri, zomwe zimapereka lingaliro latsopano lopangira maselo a dzuwa ndima photodetectorsZotsatira zake zinasindikizidwa mu magazini yaposachedwa ya Advanced Materials yapadziko lonse lapansi.

"Ma nanosheet a lead iodide owonda kwambiri omwe tawakonza koyamba, mawu aukadaulo ndi 'makristalo a PbI2 okhala ndi ma atomiki okhuthala kwambiri, omwe ndi ma crystals a PbI2 okhala ndi ma nanometers awiri', omwe ndi zinthu zopyapyala kwambiri za semiconductor zokhala ndi makulidwe a nanometers ochepa okha." Sun Yan, wolemba woyamba wa pepalali komanso woyenerera digiri ya udokotala ku Nanjing University of Technology, adati adagwiritsa ntchito njira yothetsera vutoli popanga, yomwe ili ndi zofunikira zochepa kwambiri pazida ndipo ili ndi ubwino wosavuta, wachangu komanso wogwira ntchito bwino, ndipo imatha kukwaniritsa zosowa za kukonzekera zinthu zazikulu komanso zokolola zambiri. Ma nanosheet a lead iodide opangidwa ali ndi mawonekedwe ofanana a triangular kapena hexagonal, kukula kwapakati kwa ma microns 6, malo osalala komanso mawonekedwe abwino a kuwala.

Ofufuzawa adaphatikiza nanosheet yopyapyala kwambiri ya lead iodide ndi ma sulfide achitsulo chosinthika cha magawo awiri, opangidwa mwaluso, adawaphatikiza pamodzi, ndipo adapeza mitundu yosiyanasiyana ya ma heterojunctions, chifukwa kuchuluka kwa mphamvu kumakonzedwa m'njira zosiyanasiyana, kotero lead iodide imatha kukhala ndi zotsatira zosiyana pa magwiridwe antchito a kuwala kwa ma sulfide achitsulo chosinthika cha magawo awiri. Kapangidwe ka gululi kangathe kusintha bwino magwiridwe antchito a kuwala, komwe kumathandiza kupanga zida monga ma diode otulutsa kuwala ndi ma laser, omwe amagwiritsidwa ntchito powonetsa ndi kuwunikira, ndipo angagwiritsidwe ntchito m'munda wa ma photodetector ndizipangizo za photovoltaic.

Kupambana kumeneku kumakwaniritsa kulamulira kwa mawonekedwe a zinthu zosinthira zitsulo za sulfide pogwiritsa ntchito iodide yopyapyala kwambiri. Poyerekeza ndi zipangizo zamakono za optoelectronic zochokera kuzinthu zopangidwa ndi silicon, kupambana kumeneku kuli ndi makhalidwe a kusinthasintha, ang'onoang'ono ndi a nano. Chifukwa chake, kungagwiritsidwe ntchito pokonzekera zinthu zosinthasintha komanso zophatikizika.zipangizo zamagetsi za optoelectronicIli ndi mwayi waukulu wogwiritsa ntchito zipangizo zamagetsi zolumikizidwa, ndipo imapereka lingaliro latsopano lopangira maselo a dzuwa, zida zowunikira zithunzi ndi zina zotero.