August 30, 2021 to September 3, 2021
University of Innsbruck
Europe/Zurich timezone

【138】Advancements in In-free III-nitride heterostructures emitting in the near infrared

Sep 1, 2021, 6:45 PM
Room A

Room A

Talk Condensed Matter Physics (KOND) Condensed Matter Physics


Anna Spindlberger (Johannes Kepler Universität Linz)


Heterostructures based on AlxGa1-xN are the building blocks of state-of the-art high-power and optoelectronic devices working in the visible and ultra-violet range. It was recently found, that the self-assembly of Mn-Mgk complexes in epitaxial GaN:(Mn,Mg) and AlxGa1-xN:(Mn,Mg) allows extending the emission spectra of these In-free compounds to the (near) infrared (IR). Here, through a combination of photoluminescence excitation spectroscopy and theoretical computational analysis based on density functional theory, the most efficient emission channels are identified. Furthermore, by embedding a GaN:(Mn,Mg) active layer between AlxGa1-xN:Mn/GaN distributed Bragg reflectors or layers of porous GaN, the efficiency of the IR emission is significantly enhanced.

Primary authors

Anna Spindlberger (Johannes Kepler Universität Linz) Dr Dmytro Kysylychyn (Johannes Kepler Universität Linz) Dr Rajdeep Adhikari (Johannes Kepler Universität Linz) Dr Michel Bockstedte (Johannes Kepler Universität Linz) Dr Gianluca Ciatto (Synchrotron SOLEIL) Dr Alberta Bonanni (Johannes Kepler Universität Linz)

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