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Abstract
Europium is the most-studied and least-well-understood rare earth ion (REI) dopant in GaN. While attempting to increase the efficiency of red GaN light-emitting diodes (LEDs) by implanting Eu+ into p-type GaN templates, the Strathclyde University group, in collaboration with IST Lisbon and Unipress Warsaw, discovered hysteretic photochromic switching (HPS) in the photoluminescence spectrum of doubly doped GaN(Mg):Eu. Our recent work, summarised in this contribution, has used time-, temperature- and light-induced changes in the Eu intra-4f shell emission spectrum to deduce the microscopic nature of the Mg-Eu defects that form in this material. As well as shedding light on the Mg acceptor in GaN, we propose a possible role for these emission centres in quantum information and computing.
Original language | English |
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Article number | 1800 |
Number of pages | 9 |
Journal | Materials |
Volume | 11 |
Issue number | 10 |
DOIs | |
Publication status | Published - 22 Sep 2018 |
Keywords
- gallium nitride
- rare earth ions
- europium
- photoluminescence
- photochromism
- qubit
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Projects
- 1 Finished