9:15 AM - 9:30 AM [21a-C202-2] Correlation of Growth-Time Evolution and Defects Introduction Mechanism of Monolayer WS2 Revealed by In-Situ Monitoring CVD 〇(M2)Yuta Iwamoto1, Toshiro Kaneko1, Toshiaki Kato1 (1.Tohoku Univ.)