Highlights with ‘DFTB’

Geometry optimizations under stress: Graphite to Diamond phase transition (video tip of the week)

In this video tip of the week Ole shows how to simulate the phase transition from graphite to diamond by optimizing the geometry under a non-uniform external stress tensor. The guI input file for the...

Hands-on Workshop German National High Performance Computing Center / Atomistic Simulation Center, 22 March

Together with the Atomistic Simulation Center (ASC) we will teach you how to use the Amsterdam Modeling Suite locally and run simulations on the German HPC Center (NRC). The hands-on workshop will take place on...

Parametrizing GFN1-xTB for hybrid perovskites

Halide perovskites are promising materials for optoelectronic applications in solar cell devices due to their excellent optoelectronic performance. However, they suffer from several dynamical degradation problems, which are difficult to characterize. Atomistic simulations can provide...

Thermal Management: Conductivity of 2D Covalent Organic Frameworks with Nanopores

Managing temperatures is essential for the lifetime and performance of many materials and their devices. Two main applications include electronic devices and spacecraft. Covalent organic frameworks (COFs) are crystalline porous polymers, with tunable properties such...

Molecular orbital diagrams with AMSlevels (video tip of the week)

In this 14th video tip of the week, Ole demonstrates how easy AMSlevels can visualize the results of a DFTB calculation with atomic or molecular fragments.

Performance of GFN1-xTB for periodic optimization of Metal Organic Frameworks

High throughput computational screening of Metal Organic Frameworks (MOFs) has typically relied on either general force fields that lack accurate non-bonded interactions making adsorption studies impossible, or element-specific force fields that make wide-ranging predictive studies...

Hands-on workshop virtual winter school on computational chemistry, 24 February

Fedor, Ole, and Thomas will give a 3-hours online workshop for the virtual winter school on 24 February, 2-5pm CET. Please register to participate and receive a demo license to follow along. In the 2020...

Automated redox potentials assessment of dyes for photelectrochemical cells

Dye-sensitized photoelectrochemical cells (DS-PEC) are promising systems for sustainable fuel production. A great advantage for their design is the modularity of these systems. In particular, it is of interest to tune the dye’s optical and...

Halide perovskites: efficient & accurate DFTB simulations

The fundamental understanding of the material properties of metal halide perovskites is critical to improving the stability and efficiency of future solar cells devices. Computational simulations have been proven to be a valuable tool to...

Photoinduced Electron Injection in a Fully Solvated Dye-Sensitized TiO2 Photoanode

Dye-Sensitized Solar Cells (DSSCs) and Dye-Sensitized Photoelectrochemical Cells (DSPECs) have attracted much interest in recent years for solar energy conversion. To fulfil the potential of these devices, their chemical stability and efficiency should be understood...