Ebipụtara na Ọgọst 9, 2024, na 15:30 EE Times Japan
Otu nyocha sitere na Mahadum Hokkaido nke Japan ejirila aka mepụta “transistor oxide thin-film transistor” nwere ngagharị elektrọn nke 78cm2/Vs yana nkwụsi ike na Mahadum Teknụzụ Kochi. Ọ ga-ekwe omume ịnyagharị ihuenyo nke ọgbọ 8K OLED TV.
A na-eji ihe nkiri nchebe kpuchie elu nke oyi akwa na-arụ ọrụ nke ọma, na-eme ka nkwụsi ike dị ukwuu
N'August 2024, otu nyocha gụnyere onye enyemaka Prọfesọ Yusaku Kyo na Prọfesọ Hiromichi Ota nke Institute Research for Electronic Science, Hokkaido University, na mmekorita ya na Prọfesọ Mamoru Furuta nke School of Science and Technology, Kochi University of Technology, kwupụtara na ha nwere. mepụtara transistor ihe nkiri dị mkpa nke oxide nwere ngagharị elektrọn nke 78cm2/Vs yana nkwụsi ike dị mma. Ọ ga-ekwe omume ịnyagharị ihuenyo nke ọgbọ 8K OLED TV.
Igwe onyonyo OLED 4K dị ugbu a na-eji oxide-IGZO thin-film transistors (a-IGZO TFTs) iji chụba ihuenyo. Ntugharị elektrọn nke transistor a dị ihe dịka 5 ruo 10 cm2/Vs. Agbanyeghị, iji chụpụ ihuenyo nke ọgbọ na-abịa 8K OLED TV, transistor oxide thin-film nwere ngagharị elektrọn nke 70 cm2/Vs ma ọ bụ karịa ka achọrọ.
Onye enyemaka Prọfesọ Mago na ndị otu ya mepụtara TFT nwere ngagharị elektrọn nke 140 cm2/Vs 2022, na-eji ihe nkiri dị mkpa nkeIndium oxide (In2O3)maka oyi akwa na-arụ ọrụ. Otú ọ dị, etinyeghị ya n'ọrụ n'ihi na nkwụsi ike ya (ịtụkwasị obi) adịghị njọ nke ukwuu n'ihi mgbasa ozi na nsị nke mkpụrụ ndụ gas na ikuku.
N'oge a, ndị otu nyocha ahụ kpebiri iji ihe nkiri nchebe kpuchie elu nke oyi akwa na-arụ ọrụ nke dị mkpa iji gbochie ikuku ikuku. Nsonaazụ nnwale gosiri na TFT nwere ihe nkiri nchebe nkeyttrium oxidenaerbium oxidegosipụtara nkwụsi ike dị oke elu. Ọzọkwa, ngagharị elektrọn bụ 78 cm2 / Vs, na njirimara adịghị agbanwe ọbụlagodi mgbe etinyere voltaji nke ± 20V maka awa 1.5, kwụsiri ike.
N'aka nke ọzọ, nkwụsi ike adịghị mma na TFT ndị na-eji hafnium oxide ma ọ bụaluminum oxidedị ka ihe nkiri nchebe. Mgbe a hụrụ nhazi atomic site na iji microscope eletrọn, a chọpụtara naindium oxide nayttrium oxide Ejikọtara nke ọma na ọkwa atomic (eto etoepitaxial). N'ụzọ dị iche, a kwadoro na na TFT nke nkwụsi ike na-emeghị ka ọ dịkwuo mma, interface dị n'etiti indium oxide na ihe nkiri nchebe bụ amorphous.