The 77th JSAP Autumn Meeting, 2016

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16 Amorphous and Microcrystalline Materials » 16.1 Fundamental properties, evaluation, process and devices in disordered materials

[16a-A25-1~16] 16.1 Fundamental properties, evaluation, process and devices in disordered materials

Fri. Sep 16, 2016 9:00 AM - 1:15 PM A25 (202)

Takenobu Suzuki(Toyota Tech. Inst.), Akira Saitoh(Ehime Univ.)

9:30 AM - 9:45 AM

[16a-A25-3] Photoluminescence properties of micrometer-sized ZnO crystals under high-density optical excitation

Ryosuke Matsuzaki1, Kanae Fukuoka1, Haruka Soma1, 〇Takashi Uchino1 (1.Kobe University)

Keywords:Zinc oxide, photoluminescence

We investigate the photoluminescence properties of micrometer-sized ZnO particles in the temperature range from 3 to 300 K. We found that the exciton-exciton inelastic scattering is dominant in the temperature region below 100 K. As the temperature is increased above 150 K, the exciton-electron scattering begins to take place. This exciton-electron scattering is responsible for the stimulated emission at room temperature.