Enwere ike iji ihe semiconductor ọhụrụ dị nro ma dị nro mee ngwa micro na nano optoelectronic

Enwere ike iji ihe semiconductor ọhụrụ dị nro ma dị nro mee obere nanano optoelectronic ngwaọrụ

roperties, ọkpụrụkpụ nke naanị ole na ole nanometers, ezigbo ngwa anya Njirimara… Onye nta akụkọ mụtara na Nanjing University of Technology na ndị na-eme nnyocha otu prọfesọ nke physics Department nke ụlọ akwụkwọ ahụ akwadebewo ihe ultra-mkpa elu-edu ụzọ abụọ iodide crystal. , na site na ya iji nweta ụkpụrụ nke ngwa anya Njirimara nke abụọ akụkụ mgbanwe metal sulfide ihe, nke na-enye echiche ọhụrụ maka mmepụta nke anyanwụ cell na.fotodetector. E bipụtara nsonaazụ ya na mbipụta ọhụrụ nke akwụkwọ akụkọ mba ụwa Advanced Materials.

"The ultra-thin lead iodide nanosheets anyị kwadebere maka oge mbụ, teknụzụ bụ 'atomically thick wide band gap two-dimensional PbI2 crystals', nke bụ ihe semiconductor dị oke mkpa nke nwere naanị obere nanometers ole na ole. ” Sun Yan, onye edemede mbụ nke akwụkwọ akụkọ ahụ na onye nyocha doctoral na Mahadum Teknụzụ Nanjing, kwuru na ha na-eji usoro ngwọta synthesize, nke nwere obere akụrụngwa chọrọ ma nwee uru dị mfe, ngwa ngwa na ịrụ ọrụ nke ọma, ma nwee ike izute ya. mkpa nke nnukwu-mpaghara na elu-mkpụrụ ihe onwunwe nkwadebe. Nanosheets nke ndu iodide a haziri ahazi nwere ọdịdị triangular ma ọ bụ hexagon, nkezi nha nke 6 microns, elu dị larịị na ezigbo ngwa anya.

Ndị nchọpụta ahụ jikọtara nanosheet dị nro nke lead iodide na ụzọ abụọ ngbanwe metal sulfide, nke a haziri nke ọma, chịkọta ha ọnụ, ma nweta ụdị heterojunctions dị iche iche, n'ihi na a na-ahazi ọkwa ike n'ụzọ dị iche iche, ya mere iodide ndu nwere ike inwe mmetụta dị iche iche. na ngwa anya arụmọrụ nke dị iche iche abụọ akụkụ mgbanwe metal sulfide. Nke a band Ọdịdị nwere ike n'ụzọ dị irè melite luminous arụmọrụ, nke na-eme ka mmepụta nke ngwaọrụ dị ka ìhè-emitting diodes na lasers, nke na-etinyere na ngosi na ọkụ, na ike ga-eji na ubi nke photodetectors na.ngwaọrụ fotovoltaic.

Mmezu a na-achọpụta nhazi nke ngwa anya nke ihe igwe sulfide mgbanwe akụkụ abụọ site na ultra-thin lead iodide. Tụnyere ngwaọrụ optoelectronic ọdịnala dabere na ihe ndị sitere na silicon, mmezu a nwere njirimara mgbanwe, micro na nano. Ya mere, enwere ike itinye ya na nkwadebe nke mgbanwe na ntinyengwaọrụ optoelectronic. Ọ nwere atụmanya ngwa sara mbara n'ọhịa nke ngwaọrụ micro na nano optoelectronic agbakwunyere, ma na-enye echiche ọhụrụ maka imepụta mkpụrụ ndụ anyanwụ, fotodetectors na ihe ndị ọzọ.