Defect-effects on the photoluminescence of ZrO2 bulk,film and nanocrystals |
| |
| Authors: | Shosuke Mochizuki Takashi Saito |
| |
| Institution: | Department of Physics, College of Humanities and Sciences, Nihon University, 3-25-40 Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan |
| |
| Abstract: | The photoluminescence (PL) properties of ZrO2 have been measured at different temperatures between 7 and 300 K, using various kinds of ZrO2 specimens: bulk crystal melt-grown by a large solar furnace, thermally oxidized zirconium plate (ZrO2 film crystal on Zr ) and nanocrystals (surface area: 35–45m2/g, diameter: 20–30 nm). The results clarify the deep and shallow energy level structures in the energy gap. Reversible UV-laser-light-induced spectral changes are observed for all of the specimens in different specimen-atmospheres (vacuum and O2 gas). The results elucidate the defect-effects of the PL properties and the PL enhancement mechanism in ZrO2 nanocrystals. |
| |
| Keywords: | Photoluminescence Metal oxide Nanocrystals Oxygen defect |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
