[18a-A25-1~11] 3.6 Laser processing

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)

[18a-A25-9] PL properties of ZnO spherical particles prepared by laser ablation with different conditions

〇Yuki Sakate¹, Hikaru Taniguchi¹, Ikurou Umezu², Masao Ichida², Daisuke Nakamura³, Tamao Aoki² (1.Grad. Sch. Nat. Sci., Konan Univ, 2.Dept. Phys., Konan Univ., 3.Grad. Sch. ISEE, Kyusyu Univ)

Keywords:

ZnO,photoexcited luminescence,spherical nano particles

We have fabricated size-controlled ZnO spherical nanoparticles by a combination of laser ablation in gas and inertial effects, and evaluated their quality from their optical properties. In this study, we investigated the fabrication conditions for better quality samples by comparing samples with different fabrication conditions and samples fabricated with a long-pulse (LP) laser. As a result, it was found that there is a correlation between the amount of line defects and point defects, and that point defects can be reduced by increasing the laser fluence.