Christian Brandl

On the structure of (111) twist grain boundaries in diamond: atomistic simulations with Tersoff-type interatomic potentials

C Baruffi, C Brandl

Journal article  |  2021  |  ACTA MATERIALIA

In nanocrystalline diamond thin films, the high grain boundary density and the associated grain boundary properties may dominate t..

Influence of the Growth Substrate on the Internal Quantum Efficiency of AlGaN/AlN Multiple Quantum Wells Governed by Carrier Localization

G Jacopin, C Frankerl, N Tillner, MJ Davies, G Rossbach, C Brandl, MP Hoffmann, R Zeisel, A Hoffmann, HJ Lugauer

Journal article  |  2021  |  Physica Status Solidi (B) Basic Research

The influence of the growth substrate on the internal quantum efficiency (IQE) of deep ultraviolet light-emitting diodes is studie..

Carrier Dynamics in Al-Rich AlGaN/AlN Quantum Well Structures Governed by Carrier Localization

C Frankerl, F Nippert, MP Hoffmann, C Brandl, HJ Lugauer, R Zeisel, A Hoffmann, MJ Davies

Journal article  |  2020  |  Physica Status Solidi (B): Basic Research

The carrier dynamics of Al-rich AlGaN/AlN quantum well (QW) structures in the presence of strong carrier localization is reported...

Point Defect-Induced UV-C Absorption in Aluminum Nitride Epitaxial Layers Grown on Sapphire Substrates by Metal-Organic Chemical Vapor Deposition

N Tillner, C Frankerl, F Nippert, MJ Davies, C Brandl, R Lösing, M Mandl, HJ Lugauer, R Zeisel, A Hoffmann, A Waag, MP Hoffmann

Journal article  |  2020  |  Physica Status Solidi (B): Basic Research

Herein, the optical properties of aluminum nitride (AlN) epitaxial layers grown on sapphire substrates by metal-organic chemical v..

Origin of carrier localization in AlGaN-based quantum well structures and implications for efficiency droop

C Frankerl, F Nippert, A Gomez-Iglesias, MP Hoffmann, C Brandl, HJ Lugauer, R Zeisel, A Hoffmann, MJ Davies

Journal article  |  2020  |  Applied Physics Letters

We investigate carrier localization in Al-rich AlGaN/AlN quantum well (QW) structures. Low temperature time-resolved photoluminesc..

Strongly localized carriers in Al-rich AlGaN/AlN single quantum wells grown on sapphire substrates

C Frankerl, F Nippert, MP Hoffmann, H Wang, C Brandl, HJ Lugauer, R Zeisel, A Hoffmann, MJ Davies

Journal article  |  2020  |  Journal of Applied Physics

Carrier dynamics in AlGaN-based single quantum well (QW) structures grown on sapphire are studied by means of time-integrated and ..

Molecular dynamics simulations of nanopolycrystals

C Brandl

Book Chapter  |  2019

Nanopolycrystals are polycrystalline metals with an average grain size below 100 nm and exhibit extraordinary strength values. In ..

Dislocation interactions at reduced strain rates in atomistic simulations of nanocrystalline Al

Maxime Dupraz, Zhen Sun, C Brandl, Helena Van Swygenhoven

Journal article  |  2018  |  ACTA MATERIALIA

Molecular dynamics simulations of transient stress drops have been carried out in different regimes on a nanocrystalline Aluminum ..

Molecular Dynamics Simulations of Nanopolycrystals

Christian Brandl

Book Chapter  |  2018

Nanopolycrystals are polycrystalline metals with an average grain size below 100 nm and exhibit extraordinary strength values. In ..

Thermally activated dislocation plasticity in body-centered cubic chromium studied by high-temperature nanoindentation

In-Chul Choi, Christian Brandl, Ruth Schwaiger

Journal article  |  2017  |  ACTA MATERIALIA

The deformation behavior of Chromium (Cr) was investigated with the goal to understand and quantify the thermally-activated disloc..