Izixhobo ezintsha ze-semiconductor ezincinci nezithambileyo zingasetyenziselwa ukwenza i-micro kunyeizixhobo ze-nano optoelectronic
iiroperties, ubukhulu beenanometers ezimbalwa kuphela, iipropati ezilungileyo zokukhanya… Intatheli ifunde kwiYunivesithi yeTekhnoloji yaseNanjing ukuba iqela lophando loprofesa weSebe lefiziksi lesikolo lilungiselele ikristale ye-iodide ye-lead ebhityileyo kakhulu ekumgangatho ophezulu, kwaye ngayo ukufezekisa ulawulo lweepropati zokukhanya zezinto ze-sulfide zesinyithi zotshintsho olunemilinganiselo emibini, ezibonelela ngengcamango entsha yokwenziwa kweeseli zelanga kunyeii-photodetectorsIziphumo zipapashwe kwiphephancwadi lamva nje le-Advanced Materials yamazwe ngamazwe.
“Ii-nanosheets ze-lead iodide ezibhityileyo kakhulu esizilungiselele okokuqala, igama lobuchwephesha lithi ‘iikristale ze-PbI2 ezixineneyo ngeatomically thick wide band gap two-dimensional’, ezizinto ze-semiconductor ezibhityileyo kakhulu ezinobukhulu bee-nanometers ezimbalwa kuphela.” USun Yan, umbhali wokuqala wephepha kunye nomviwa wobugqirha kwiYunivesithi yeTekhnoloji yaseNanjing, uthe basebenzise indlela yesisombululo ukwenza i-synthesis, eneemfuno zezixhobo eziphantsi kakhulu kwaye ineenzuzo zokuba lula, ngokukhawuleza nangokusebenzayo, kwaye inokuhlangabezana neemfuno zokulungiselela izinto ezinkulu kunye nezivelisa kakhulu. Ii-nanosheets ze-lead iodide ezidityanisiweyo zinemilo eqhelekileyo ye-triangular okanye ye-hexagonal, ubungakanani obuphakathi bee-microns ezi-6, umphezulu ogudileyo kunye neempawu ezilungileyo zokukhanya.
Abaphandi badibanise le nanosheet incinci kakhulu ye-lead iodide kunye ne-two-dimensional transition metal sulfides, eyilwe ngokwenziwa, bayihlanganisa kunye, baza bafumana iintlobo ezahlukeneyo ze-heterojunctions, kuba amanqanaba amandla acwangciswe ngeendlela ezahlukeneyo, ngoko ke i-lead iodide inokuba nemiphumo eyahlukileyo ekusebenzeni kwe-optical ye-two-dimensional transition metal sulfides. Olu lwakhiwo lwebhendi lunokuphucula ngempumelelo ukusebenza kakuhle kokukhanya, okulungele ukuveliswa kwezixhobo ezinje ngee-light-emitting diodes kunye ne-laser, ezisetyenziswa ekuboniseni nasekukhanyiseni, kwaye zingasetyenziswa kwicandelo le-photodetectors kunyeizixhobo ze-photovoltaic.
Le mpumelelo ifezekisa ukulawulwa kweempawu ezibonakalayo zezinto ze-sulfide zesinyithi ezitshintshayo ezinemilinganiselo emibini nge-iodide ye-lead ebhityileyo kakhulu. Xa kuthelekiswa nezixhobo ze-optoelectronic zemveli ezisekelwe kwizinto ezisekelwe kwi-silicon, le mpumelelo ineempawu zokuguquguquka, ezincinci kunye ne-nano. Ke ngoko, inokusetyenziswa ekulungiseleleni izinto eziguquguqukayo nezidibeneyo.izixhobo ze-optoelectronicInethuba elibanzi lokusetyenziswa kwicandelo lezixhobo ezidityanisiweyo ze-micro kunye ne-nano optoelectronic, kwaye inika umbono omtsha wokwenza iiseli zelanga, ii-photodetectors njalo njalo.
Ixesha lokuthumela: Septemba-20-2023