Yakaburitswa musi wa9 Nyamavhuvhu, 2024, nenguva dza15:30 EE Times Japan
Boka revatsvagiri kubva kuJapan Hokkaido University rakabatana kugadzira "oxide thin-film transistor" ine electron mobility ye78cm2/Vs uye kugadzikana kwakanaka neKochi University of Technology. Zvichakwanisika kutyaira skrini dzeTV dze8K OLED dzechizvarwa chinotevera.
Pamusoro pefirimu rakatetepa rinoita basa rakafukidzwa nefirimu rinodzivirira, zvichiita kuti kugadzikana kugadzikane zvakanyanya.
Muna Nyamavhuvhu 2024, boka revatsvagiri rinosanganisira Mubatsiri waProfessor Yusaku Kyo naProfessor Hiromichi Ota veResearch Institute for Electronic Science, Hokkaido University, pamwe chete naProfessor Mamoru Furuta veSchool of Science and Technology, Kochi University of Technology, vakazivisa kuti vakagadzira "oxide thin-film transistor" ine electron mobility ye78cm2/Vs uye kugadzikana kwakanaka. Zvichakwanisika kutyaira skrini dzeTV dze8K OLED dzechizvarwa chinotevera.
MaTV e4K OLED aripo iye zvino anoshandisa matransistors eoxide-IGZO thin-film (a-IGZO TFTs) kufambisa masikirini. Kufamba kwemaerekitironi etransistor iyi kunenge 5 kusvika 10 cm2/Vs. Zvisinei, kuti ufambise sikirini yeTV yechizvarwa chinotevera ye8K OLED, transistor yeoxide thin-film ine kufamba kwemaerekitironi kwe70 cm2/Vs kana kupfuura inodiwa.
Mubatsiri waProfessor Mago nechikwata chake vakagadzira TFT ine electron mobility ye140 cm2/Vs 2022, vachishandisa firimu diki reindium oxide (In2O3)yechikamu chinoshanda. Zvisinei, hachina kushandiswa nekuti kugadzikana kwacho (kuvimbika) kwakanga kwakashata zvikuru nekuda kwekunyudzwa uye kubviswa kwemamorekuru egasi mumhepo.
Panguva ino, boka revaongorori rakasarudza kufukidza pamusoro pechikamu chitete chinoshanda nefirimu rekudzivirira kudzivirira gasi kuti risanyungudike mumhepo. Mhedzisiro yekuyedza yakaratidza kuti maTFT ane mafirimu ekudzivirira eyttrium oxideuyeerbium oxideyakaratidza kugadzikana kwakanyanya. Uyezve, kufamba kwemaerekitironi kwaive 78 cm2/Vs, uye hunhu hwacho hahuna kuchinja kunyangwe voltage ye ±20V yakashandiswa kwemaawa 1.5, ikaramba yakasimba.
Kune rumwe rutivi, kugadzikana hakuna kuvandudzika mumaTFT aishandisa hafnium oxide kanaaruminiyamu oxidesemafirimu ekudzivirira. Pakaonekwa kurongeka kwemaatomu uchishandisa maikorosikopu eerekitironi, zvakaonekwa kutiindium oxide uyeyttrium oxide Zvakanga zvakabatana zvakasimba padanho reatomu (heteroepitaxial growth). Kusiyana neizvi, zvakasimbiswa kuti mumaTFTs ane kugadzikana kusina kuvandudzika, kubatana pakati peindium oxide nefirimu rinodzivirira kwakanga kusina chimiro.