Effect of annealing on doping of graphene with molybdenum oxide. (6th March 2018)

• Record Type: Journal Article
• Authors: Ishikawa, Ryousuke; Watanabe, Sho; Nishida, Hiroki; Aoyama, Yuki; Oya, Tomoya; Nomoto, Takahiro; Tsuboi, Nozomu
• Is Part Of: Applied physics express. Volume 11:Number 4(2018)
• Publication Date: 2018-03-06
• Subjects: Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.7567/APEX.11.045101
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: We investigated the effect of post-annealing on the doping of graphene with MoO3 in this study. The as-deposited molybdenum oxide thin film prepared using our method was not completely oxidized; in addition, it was in an amorphous state, due to which its doping effect was not significant. As the post-deposition annealing temperature was increased, the oxidation and crystallization of the molybdenum oxide progressed and the doping effect increased accordingly. After annealing at 350 °C, the holes were the most doped and the sheet resistance was the lowest. The doped graphene film obtained in this study shows higher doping effect and stability compared to other dopants.