Paʻi ʻia ma ʻAukake 9, 2024, ma 15:30 EE Times Iapana
Ua hoʻomohala pū kekahi pūʻulu noiʻi mai Iapana Hokkaido University i kahi "oxide thin-film transistor" me ka neʻe electron o 78cm2/Vs a me ke kūpaʻa maikaʻi loa me Kochi University of Technology. Hiki iā ia ke hoʻokele i nā pale o nā 8K OLED TV e hiki mai ana.
Hoʻopili ʻia ka ʻili o ka papa hana ʻeleʻele me kahi kiʻi pale, e hoʻomaikaʻi nui ana i ka paʻa
I ʻAukake 2024, ua hoʻolaha ʻia kahi hui noiʻi e komo pū ana me Kākoʻo Kumu Yusaku Kyo a me Polofesa Hiromichi Ota o ka Research Institute for Electronic Science, Hokkaido University, ma ka hui pū ʻana me Professor Mamoru Furuta o ke Kula ʻepekema a me ʻenehana, Kochi University of Technology, ua hoʻolaha lākou ua loaʻa iā lākou. ua hoʻomohala i kahi "oxide thin-film transistor" me ka neʻe electron o 78cm2/Vs a me ke kūpaʻa maikaʻi loa. Hiki iā ia ke hoʻokele i nā pale o nā 8K OLED TV e hiki mai ana.
Hoʻohana nā TV 4K OLED i kēia manawa i nā transistors kiʻiʻoniʻoni lahilahi oxide-IGZO (a-IGZO TFTs) e hoʻokele i nā pale. ʻO ka mobility electron o kēia transistor ma kahi o 5 a 10 cm2/Vs. Eia nō naʻe, no ka hoʻokele ʻana i ka pale o kahi 8K OLED TV hou, pono kahi transistor kiʻiʻoniʻoni oxide me ka neʻe electron o 70 cm2/Vs a i ʻole.
Ua hoʻomohala ʻo Polofesa Kokua Mago a me kāna hui i kahi TFT me ka neʻe electron o 140 cm2/Vs 2022, me ka hoʻohana ʻana i kahi kiʻiʻoniʻoni lahilahi oindium oxide (In2O3)no ka papa hana. Eia naʻe, ʻaʻole i hoʻohana pono ʻia no ka mea ʻilihune loa kona kūpaʻa (kūpono) ma muli o ka adsorption a me ka desorption o nā molekele kinoea i ka lewa.
I kēia manawa, ua hoʻoholo ka pūʻulu noiʻi e uhi i ka ʻili o ka papa hana ʻeleʻele me kahi kiʻi pale e pale ai i ke kinoea mai ka adsorbed i ka lewa. Ua hōʻike nā hopena hoʻokolohua i nā TFT me nā kiʻi pale oyttrium oxideaerbium oxidehōʻike i ke kūpaʻa kiʻekiʻe loa. Eia kekahi, ʻo 78 cm2/Vs ka neʻe electron, a ʻaʻole i loli nā hiʻohiʻona i ka wā i hoʻohana ʻia ai ka volta o ± 20V no 1.5 mau hola, e noho mau ana.
Ma ka ʻaoʻao ʻē aʻe, ʻaʻole i hoʻomaikaʻi ke kūpaʻa i nā TFT i hoʻohana i ka hafnium oxide a i ʻolealumini oxidee like me nā kiʻiʻoniʻoni pale. Ke nānā ʻia ka hoʻonohonoho atomika me ka microscope electron, ua ʻike ʻiaindium oxide ayttrium oxide ua hoʻopaʻa paʻa ʻia ma ka pae atomika (heteroepitaxial ulu). I ka hoʻokaʻawale ʻana, ua hōʻoia ʻia i loko o nā TFT ʻaʻole i hoʻomaikaʻi ka paʻa ʻana, ʻo ka pilina ma waena o ka indium oxide a me ke kiʻi pale he amorphous.