An buga a ranar 9 ga Agusta, 2024, da ƙarfe 15:30 na safe agogon EE Times Japan
Wata ƙungiyar bincike daga Jami'ar Hokkaido ta Japan ta haɗa kai wajen ƙirƙiro wani "transistor mai siraran oxide" mai motsi na electron na 78cm2/Vs da kuma kyakkyawan kwanciyar hankali tare da Jami'ar Fasaha ta Kochi. Zai yiwu a iya sarrafa allon talabijin na OLED na ƙarni na gaba na 8K.
An rufe saman siririn fim ɗin mai aiki da fim mai kariya, wanda ke inganta kwanciyar hankali sosai.
A watan Agusta na 2024, wata ƙungiyar bincike da ta haɗa da Mataimakin Farfesa Yusaku Kyo da Farfesa Hiromichi Ota na Cibiyar Bincike ta Kimiyyar Lantarki, Jami'ar Hokkaido, tare da haɗin gwiwar Farfesa Mamoru Furuta na Makarantar Kimiyya da Fasaha ta Jami'ar Fasaha ta Kochi, sun sanar da cewa sun ƙirƙiro "transistor mai siraran oxide" tare da motsi na electron na 78cm2/Vs da kuma kyakkyawan kwanciyar hankali. Zai yiwu a tuƙa allon talabijin na OLED na zamani na 8K.
Talabijin na 4K OLED na yanzu suna amfani da transistors na fim mai sirara na oxide-IGZO (a-IGZO TFTs) don tuƙa allon. Motsin lantarki na wannan transistor yana da kusan 5 zuwa 10 cm2/Vs. Duk da haka, don tuƙa allon talabijin na OLED na ƙarni na gaba, ana buƙatar transistor na fim mai sirara na oxide tare da motsi na electron na 70 cm2/Vs ko fiye.
Mataimakin Farfesa Mago da tawagarsa sun ƙirƙiro TFT mai motsi na lantarki na 140 cm2/Vs 2022, ta amfani da siririn fim naindium oxide (In2O3)don aikin Layer. Duk da haka, ba a yi amfani da shi a aikace ba saboda kwanciyar hankalinsa (amincinsa) ya kasance mara kyau sosai saboda sha da kuma fitar da ƙwayoyin iskar gas a cikin iska.
A wannan karon, ƙungiyar binciken ta yanke shawarar rufe saman siririn Layer mai aiki da fim mai kariya don hana iskar gas shawagi a cikin iska. Sakamakon gwaji ya nuna cewa TFTs tare da fina-finan kariya nayttrium oxidekumaerbium oxideya nuna kwanciyar hankali mai matuƙar girma. Bugu da ƙari, motsin lantarki shine 78 cm2/Vs, kuma halayen ba su canza ba ko da lokacin da aka yi amfani da ƙarfin lantarki na ±20V na tsawon awanni 1.5, wanda ya kasance mai karko.
A gefe guda kuma, kwanciyar hankali bai inganta ba a cikin TFTs waɗanda ke amfani da hafnium oxide koaluminum oxidea matsayin fina-finan kariya. Lokacin da aka lura da tsarin atomic ta amfani da na'urar hangen nesa ta lantarki, an gano cewaindium oxide kumayttrium oxide an haɗa su sosai a matakin atomic (girman heteroepitaxial). Sabanin haka, an tabbatar da cewa a cikin TFTs waɗanda kwanciyar hankalinsu bai inganta ba, haɗin da ke tsakanin indium oxide da fim ɗin kariya ba shi da tsari.