Molybdenum trioxide (MoO3) yana da yuwuwar a matsayin muhimmin abu mai girma biyu (2-D), amma yawancin masana'anta ya koma baya na wasu a cikin aji. Yanzu, masu bincike a A * STAR sun haɓaka hanya mai sauƙi don samar da ultrathin, manyan nanosheets na MoO3 masu inganci.

Bayan gano graphene, wasu kayan 2-D irin su canjin ƙarfe di-chalcogenides, sun fara jan hankali sosai. Musamman, MoO3 ya fito a matsayin muhimmin abu mai mahimmanci na 2-D saboda kyawawan kayan lantarki da kayan aikin gani waɗanda ke riƙe alƙawari don kewayon sabbin aikace-aikace a cikin kayan lantarki, optoelectronics da electrochromics.

Liu Hongfei da abokan aiki daga Cibiyar Nazarin Kayan Aikin A * STAR da Injiniya da Cibiyar Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwararren Ƙwaƙwalwa na Ƙwaƙwalwa na Ƙwaƙwalwa na Ƙaƙwalwa na Ƙaƙwalwa ) ya yi don samar da manyan nanosheets na MoO3 masu sassauƙa da bayyane.

"Nanosheets na molybdenum trioxide masu sirara atom ɗin suna da sabbin kaddarorin da za a iya amfani da su a cikin kewayon aikace-aikacen lantarki," in ji Liu. "Amma don samar da ingantattun nanosheets, kristal na iyaye dole ne ya kasance mai tsabta sosai."

Da farko ta amfani da wata dabara da ake kira thermal vapor transport, masu binciken sun kwashe foda na MoO3 a cikin tanderun bututu a ma'aunin Celsius 1,000. Sa'an nan, ta hanyar rage adadin shafukan nucleation, za su iya dacewa da thermodynamic crystallization na MoO3 don samar da lu'ulu'u masu inganci a digiri 600 na ma'aunin celcius ba tare da buƙatar takamaiman wuri ba.

"Gabaɗaya, haɓakar crystal a yanayin zafi mai zafi yana shafar substrate," in ji Liu. "Duk da haka, idan babu wani abu mai niyya za mu iya sarrafa ci gaban kristal, yana ba mu damar haɓaka lu'ulu'u na molybdenum trioxide na tsabta da inganci."

Bayan sanyaya lu'ulu'u zuwa zafin jiki, masu binciken sun yi amfani da injin inji da na ruwa don samar da bel mai kauri na lu'ulu'u na MoO3. Da zarar sun ƙaddamar da belts zuwa sonication da centrifugation, sun sami damar samar da manyan, MoO3 nanosheets masu inganci.

Ayyukan ya ba da sababbin fahimta game da hulɗar lantarki na interlayer na 2-D MoO3 nanosheets. Haɓaka haɓakar kristal da fasahohin cirewa da ƙungiyar ta haɓaka kuma na iya taimakawa wajen sarrafa tazarar band — sabili da haka kaddarorin optoelectronic-na kayan 2-D ta hanyar samar da 2-D heterojunctions.

"Yanzu muna ƙoƙarin ƙirƙira 2-D MoO3 nanosheets tare da manyan wurare, da kuma bincika yiwuwar amfani da su a wasu na'urori, kamar na'urori masu auna gas," in ji Liu.