Idasindikizidwa pa Ogasiti 9, 2024, 15:30 EE Times Japan
Gulu lofufuza kuchokera ku yunivesite ya Hokkaido yaku Japan lapanga limodzi "transistor ya oxide thin-film" yokhala ndi ma elekitironi yoyenda 78cm2/Vs komanso kukhazikika kwabwino ndi Kochi University of Technology. Zikhala zotheka kuyendetsa zowonera za m'badwo wotsatira wa 8K OLED TV.
Pamwamba pa yogwira wosanjikiza woonda filimu yokutidwa ndi zoteteza filimu, kwambiri kuwongolera bata
Mu Ogasiti 2024, gulu lofufuza kuphatikiza Wothandizira Pulofesa Yusaku Kyo ndi Pulofesa Hiromichi Ota wa Research Institute for Electronic Science, Hokkaido University, mogwirizana ndi Pulofesa Mamoru Furuta wa School of Science and Technology, Kochi University of Technology, adalengeza adapanga "transistor yopyapyala ya oxide" yokhala ndi ma elekitironi oyenda 78cm2 / Vs komanso kukhazikika kwabwino. Zikhala zotheka kuyendetsa zowonera za m'badwo wotsatira wa 8K OLED TV.
Ma TV amakono a 4K OLED amagwiritsa ntchito ma transistors a oxide-IGZO thin-film (a-IGZO TFTs) kuyendetsa zowonetsera. Kusuntha kwa ma elekitironi kwa transistor iyi ndi pafupifupi 5 mpaka 10 cm2 / Vs. Komabe, kuti muyendetse chinsalu cham'badwo wotsatira wa 8K OLED TV, transistor ya filimu yopyapyala yokhala ndi ma elekitironi yoyenda 70 cm2/Vs kapena kupitilira apo ikufunika.
Wothandizira Pulofesa Mago ndi gulu lake adapanga TFT yokhala ndi 140 cm2/Vs 2022, pogwiritsa ntchito filimu yopyapyala.indium oxide (In2O3)kwa wosanjikiza yogwira. Komabe, sizinagwiritsidwe ntchito chifukwa kukhazikika kwake (kudalirika) kunali kovutirapo kwambiri chifukwa cha kutengeka ndi kuwonongeka kwa mamolekyu a mpweya mumlengalenga.
Panthawiyi, gulu lofufuzalo linaganiza zophimba pamwamba pa nsalu yopyapyala yogwira ntchito ndi filimu yotetezera kuti gasi asatengeke mumlengalenga. Zotsatira zoyeserera zidawonetsa kuti ma TFT okhala ndi mafilimu oteteza ayttrium oxidendierbium okusayidiadawonetsa kukhazikika kwapamwamba kwambiri. Komanso, kuyenda kwa ma elekitironi kunali 78 cm2 / Vs, ndipo makhalidwewo sanasinthe ngakhale pamene magetsi a ± 20V anagwiritsidwa ntchito kwa maola 1.5, kukhala okhazikika.
Kumbali inayi, kukhazikika sikunayende bwino mu TFTs zomwe zinagwiritsa ntchito hafnium oxide kapenaaluminium oxidengati mafilimu oteteza. Pamene dongosolo la atomiki linkawonedwa pogwiritsa ntchito maikulosikopu ya elekitironi, zinapezeka kutioxide ya indium ndiyttrium oxide anali omangika mwamphamvu pamlingo wa atomiki (kukula kwa heteroepitaxial). Mosiyana ndi zimenezi, zinatsimikiziridwa kuti mu TFTs omwe kukhazikika kwawo sikunasinthe, mawonekedwe pakati pa indium oxide ndi filimu yotetezera inali amorphous.