Zida zatsopano zopyapyala zopyapyala komanso zofewa zitha kugwiritsidwa ntchito kupanga zida zazing'ono ndi nano optoelectronic

Zida zowonda komanso zofewa zatsopano za semiconductor zitha kugwiritsidwa ntchito kupanga yaying'ono ndinano optoelectronic zipangizo

zingwe, makulidwe a ma nanometer ochepa, mawonekedwe owoneka bwino… Mtolankhaniyo adaphunzira kuchokera ku Nanjing University of Technology kuti gulu lofufuza la pulofesa wa dipatimenti ya sayansi ya pasukulupo lakonza kristalo wowonda kwambiri, wowonda kwambiri wamitundu iwiri. , ndi kupyolera mu izo kukwaniritsa lamulo la kuwala katundu wa awiri azithunzithunzi kusintha zitsulo sulfide zipangizo, amene amapereka lingaliro latsopano kupanga maselo dzuwa ndima photodetectors. Zotsatirazo zidasindikizidwa m'magazini yaposachedwa yapadziko lonse lapansi Advanced Materials.

"Ma nanosheets owonda kwambiri a iodide omwe tawakonzera koyamba, mawu aukadaulo ndi 'atomically thick wide band gap two-dimensional PbI2 crystals', yomwe ndi zinthu zowonda kwambiri za semiconductor zokhala ndi makulidwe ochepa chabe. ” Sun Yan, mlembi woyamba wa pepala ndi phungu wa udokotala ku Nanjing University of Technology, ananena kuti iwo ntchito njira yothetsera kaphatikizidwe, amene ali otsika kwambiri zipangizo zofunika ndipo ali ndi ubwino yosavuta, mofulumira ndi kothandiza, ndipo akhoza kukumana ndi zosowa zazikulu m'dera ndi mkulu-zokolola zakuthupi kukonzekera. Ma nanosheets opangidwa ndi ayodini amakhala ndi mawonekedwe a triangular kapena hexagonal, kukula kwake kwa ma microns 6, pamtunda wosalala komanso mawonekedwe abwino a kuwala.

Ofufuzawo adaphatikiza nanosheet yowonda kwambiri ya ayodini wotsogola ndi ma sulfide amitundu iwiri, opangidwa mochita kupanga, adawayika pamodzi, ndikupeza mitundu yosiyanasiyana ya ma heterojunctions, chifukwa mphamvu zake zimakonzedwa m'njira zosiyanasiyana, kotero kuti iodide yotsogolera imatha kukhala ndi zotsatira zosiyanasiyana. pa kuwala kwa kuwala kwamitundu iwiri yosinthira zitsulo za sulfide. Kapangidwe ka bandi kameneka kamatha kukonza bwino kuwala kowala, komwe kumathandizira kupanga zida monga ma diode otulutsa kuwala ndi ma lasers, omwe amagwiritsidwa ntchito powonetsa ndi kuyatsa, ndipo angagwiritsidwe ntchito m'munda wa ma photodetectors ndi ma laser.zipangizo za photovoltaic.

Kupambana kumeneku kumazindikira kuwongolera kwa mawonekedwe amitundu iwiri yosinthira zitsulo za sulfide ndi ayodini wowonda kwambiri. Poyerekeza ndi zida zachikhalidwe za optoelectronic zochokera pazida zokhala ndi silicon, kupindula uku kuli ndi mawonekedwe a kusinthasintha, yaying'ono ndi nano. Choncho, angagwiritsidwe ntchito pokonzekera kusinthasintha ndi Integratedzida za optoelectronic. Ili ndi chiyembekezo chogwiritsa ntchito kwambiri pazida zophatikizika zazing'ono ndi nano optoelectronic, ndipo imapereka lingaliro latsopano lopanga ma cell a solar, ma photodetectors ndi zina zotero.