Photoluminescence spectra of intrinsic interstitials in Ⅱa diamond after near threshold energy irradiation
| Autor: | Gangyuan Jia, Yaqiao Wu, Ruiang Guo, Zunpeng Xiao, Kaiyue Wang, Yufei Zhang, Yuming Tian |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Photoluminescence Relaxation (NMR) Diamond 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Molecular physics Spectral line Surfaces Coatings and Films 0103 physical sciences engineering Electron beam processing Laser power scaling Irradiation 0210 nano-technology Spectroscopy Instrumentation |
| Zdroj: | Vacuum. 187:110107 |
| ISSN: | 0042-207X |
| DOI: | 10.1016/j.vacuum.2021.110107 |
| Popis: | In this work, the intrinsic optical defects are created by near threshold energy electron irradiation and then the low temperature micro-photoluminescence (PL) spectroscopy is employed to investigate the dependences of laser power and measurement temperature. The optical centers include 1.673 eV, 2.091 eV and 2.253 eV. Compared with the emissions of 2.091 eV and 2.253 eV, the 1.673 eV emission has an obviously higher growth rate in intensity with the increase of laser power, a larger lattice relaxation, the stronger electron-phonon coupling strength, indicating that they are associated with the different defects. These results show that the 2.091 eV and 2.253 eV emissions are attributed to the self-interstitial defects. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect