Abstract
Cathodoluminescence (CL) and Photoluminescence (PL) of Eu-implanted zincblende-GaN (ZB-GaN:Eu) and wurtzite-GaN (W-GaN:Eu) are compared in order to investigate the optical activation of GaN by Eu. The Eu3+ emission spectrum depends critically on the crystal structure of the GaN host; implantation and post-annealing at 800°C partially converts implantation-damaged ZB-GaN:Eu to W-GaN:Eu. Selective excitation of PL at wavelengths below the ZB-GaN band edge reveals a new sharp emission line at 627 nm, together with a number of satellites, which we ascribe to ZB-GaN:Eu.
Original language | English (US) |
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Pages (from-to) | 170-173 |
Number of pages | 4 |
Journal | Physica Status Solidi (B) Basic Research |
Volume | 245 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2008 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics