6 papers
High-resolution remote thermography using luminescent low-dimensional tin-halide perovskites
Sergii Yakunin, Bogdan M. Benin, Yevhen Shynkarenko +6
While metal-halide perovskites have recently revolutionized research in optoelectronics through a unique combination of performance and synthetic simplicity, their low-dimensional…
Direct visualization of the 3D structure of silicon impurities in graphene
Christoph Hofer, Viera Skakalova, Mohammad Reza Ahmadpour Monazam +4
We directly visualize the three-dimensional (3D) geometry and dynamics of silicon impurities in graphene as well as their dynamics by aberration-corrected scanning transmission ele…
Revealing the 3D Structure of Graphene Defects
Christoph Hofer, Christian Kramberger, Mohammad Reza Ahmadpour Monazam +5
We demonstrate insights into the three-dimensional structure of defects in graphene, in particular grain boundaries, obtained via a new approach from two transmission electron micr…
Analysis of point defects in graphene using low dose scanning transmission electron microscopy imaging and maximum likelihood reconstruction
Christian Kramberger, Andreas Mittelberger, Christoph Hofer +1
Freestanding graphene displays an outstanding resilience to electron irradiation at low electron energies. Point defects in graphene are, however, subject to beam driven dynamics.…
Automated image acquisition for low-dose STEM at atomic resolution
Andreas Mittelberger, Christian Kramberger, Christoph Hofer +2
Beam damage is a major limitation in electron microscopy that becomes increasingly severe at higher resolution. One possible route to circumvent radiation damage, which forms the b…
Competing dynamics of single phosphorus dopant in graphene with electron irradiation
Cong Su, Mukesh Tripathi, Qing-Bo Yan +10
Atomic-level structural changes in materials are important but challenging to study. Here, we demonstrate the dynamics and the possibility of manipulating a phosphorus dopant atom…