Matthias Auf der Maur
YOU?
Author Swipe
View article: Pyridine-Based Multifunctional Surface Passivators Enable Efficient and Stable Perovskite Indoor Photovoltaics
Pyridine-Based Multifunctional Surface Passivators Enable Efficient and Stable Perovskite Indoor Photovoltaics Open
Efficient surface passivation is crucial for mitigating defect-induced recombination losses in perovskite-based indoor photovoltaics (IPVs), where charge carrier dynamics are particularly sensitive to trap states under low-intensity illumi…
View article: Beneath the Surface: Investigating Perovskite Solar Cells Under Water
Beneath the Surface: Investigating Perovskite Solar Cells Under Water Open
Beyond traditional rooftop and building‐integrated photovoltaics (BIPV), photovoltaic (PV) devices find applications in agrivoltaics, space, and indoor settings. However, the underwater (UW) environment remains largely unexplored. Below 50…
View article: Empowering perovskite modules for solar and indoor lighting applications by 1,8-diiodooctane/phenethylammonium iodide 2D perovskite passivation strategy
Empowering perovskite modules for solar and indoor lighting applications by 1,8-diiodooctane/phenethylammonium iodide 2D perovskite passivation strategy Open
View article: Modeling of Multiquantum Well GaN‐Based Solar Cells Using a Quasi‐Equilibrium Green's Function Approach
Modeling of Multiquantum Well GaN‐Based Solar Cells Using a Quasi‐Equilibrium Green's Function Approach Open
This study examines the optoelectronic properties of nitride‐based multiquantum well solar cells, which are gaining importance in hybrid thermal‐photovoltaic applications due to their resilience to high temperatures. The investigation focu…
View article: Direct detection of particle radiation with perovskite sensors
Direct detection of particle radiation with perovskite sensors Open
In the past decade, organometal halide perovskite (OMHP) semiconductors have been studied as sensors for ionization radiation and X-ray detectors, beside the well known success as photovoltaic devices. Properties such as simple single crys…
View article: Synergistic Halogen‐Bonding Passivation and Carboxylic Acid Anchoring in Carbazole‐Based Hole‐Transport Materials Enhance Performance and Stability of p–i–n Perovskite Solar Cells
Synergistic Halogen‐Bonding Passivation and Carboxylic Acid Anchoring in Carbazole‐Based Hole‐Transport Materials Enhance Performance and Stability of p–i–n Perovskite Solar Cells Open
Interfaces pose significant challenges to the performance and stability of perovskite solar cells (PSCs), as defects and weak interactions at these boundaries can lead to energy losses and degradation. To address these issues, it is crucia…
View article: Empirical Tight-Binding Parameterizations for Accurate Heterostructure and Alloy Calculations
Empirical Tight-Binding Parameterizations for Accurate Heterostructure and Alloy Calculations Open
View article: DFT-Computational Modeling and TiberCAD Frameworks for Photovoltaic Performance Investigation of Copper-Based 2D Hybrid Perovskite Solar Absorbers
DFT-Computational Modeling and TiberCAD Frameworks for Photovoltaic Performance Investigation of Copper-Based 2D Hybrid Perovskite Solar Absorbers Open
In this work, we use a combination of dispersion-corrected density functional theory (DFT-D3) and the TiberCAD framework for the first time to investigate a newly designed and synthesized class of (C6H10N2)…
View article: Empirical tight-binding method for large-supercell simulations of disordered semiconductor alloys
Empirical tight-binding method for large-supercell simulations of disordered semiconductor alloys Open
We analyze and present applications of a recently proposed empirical tight-binding scheme for investigating the effects of alloy disorder on various electronic and optical properties of semiconductor alloys, such as the band gap variation,…
View article: Machine learned environment-dependent corrections for a spds∗ empirical tight-binding basis
Machine learned environment-dependent corrections for a spds∗ empirical tight-binding basis Open
Empirical tight-binding (ETB) methods have become a common choice to simulate electronic and transport properties for systems composed of thousands of atoms. However, their performance is profoundly dependent on the way the empirical param…
View article: Empirical tight-binding method for large-supercell simulations of disordered semiconductor alloys
Empirical tight-binding method for large-supercell simulations of disordered semiconductor alloys Open
We analyze and present applications of a recently proposed empirical tight-binding scheme for investigating the effects of alloy disorder on various electronic and optical properties of semiconductor alloys, such as the band gap variation,…
View article: Monolithic integrated light-emitting-diode/photodetector sensor for photoactive analyte monitoring: design and simulation
Monolithic integrated light-emitting-diode/photodetector sensor for photoactive analyte monitoring: design and simulation Open
We present the simulation and design optimization of an integrated light-emitting-diode/photodetector (LED-PD) sensor system for monitoring of light absorbance changes developing in analyte-sensitive compounds. The sensor integrates monoli…
View article: Multiscale Approaches for Electronic Device Simulation
Multiscale Approaches for Electronic Device Simulation Open
Simulation of electronic devices relies to large extent on semi-classical models, especially the drift-diffusion model. Where quantum effects or atomistic details are particularly important, more involved models are used. Ideally, a combin…
View article: Empirical tight-binding simulations for nonuniform disordered GaAsSb alloy
Empirical tight-binding simulations for nonuniform disordered GaAsSb alloy Open
We theoretically study the direct gap and the band-edge wavefunctions' localization of nonuniform disordered GaAsSb alloy by using empirical tight-binding simulations. We show that the nonuniformity decreases the direct gap value of the al…
View article: SMILE GaN microLED Comsol simulation models
SMILE GaN microLED Comsol simulation models Open
Comsol models with results and Matlab postprocessing scripts for ray tracing simulation of GaN-based micro-LED arrays. These models have been developed in H2020 Project SMILE, grant no. 952135. The zip archive contains the following files:…
View article: SMILE GaN microLED Comsol simulation models
SMILE GaN microLED Comsol simulation models Open
Comsol models with results and Matlab postprocessing scripts for ray tracing simulation of GaN-based micro-LED arrays. These models have been developed in H2020 Project SMILE, grant no. 952135. The zip archive contains the following files:…
View article: Microfluidic‐Assisted Growth of Perovskite Single Crystals for Photodetectors
Microfluidic‐Assisted Growth of Perovskite Single Crystals for Photodetectors Open
The organometal halide perovskites (OMHP) are promising candidates for fast, sensitive, and large area photodetectors. In the last decade, several techniques have been developed with complementary advantages. Film devices are thin and can …
View article: Impact of Local Composition on the Emission Spectra of InGaN Quantum-Dot LEDs
Impact of Local Composition on the Emission Spectra of InGaN Quantum-Dot LEDs Open
A possible solution for the realization of high-efficiency visible light-emitting diodes (LEDs) exploits InGaN-quantum-dot-based active regions. However, the role of local composition fluctuations inside the quantum dots and their effect o…
View article: Correlative analysis on InGaN/GaN nanowires: structural and optical properties of self-assembled short-period superlattices
Correlative analysis on InGaN/GaN nanowires: structural and optical properties of self-assembled short-period superlattices Open
View article: Origin of the spectral red-shift and polarization patterns of self-assembled InGaN nanostructures on GaN nanowires
Origin of the spectral red-shift and polarization patterns of self-assembled InGaN nanostructures on GaN nanowires Open
A pronounced polarization anisotropy and spectral red-shift of the emission wavelength of individual InGaN nanowires is attributed to the spontaneous formation of superlattices caused by inhomogeneous In-distribution in the wires.
View article: Light-Trapping Electrode for the Efficiency Enhancement of Bifacial Perovskite Solar Cells
Light-Trapping Electrode for the Efficiency Enhancement of Bifacial Perovskite Solar Cells Open
Antireflection and light-trapping coatings are important parts of photovoltaic architectures, which enable the reduction of parasitic optical losses, and therefore increase the power conversion efficiency (PCE). Here, we propose a novel ap…
View article: Reverse bias breakdown and photocurrent gain in CH3NH3PbBr3 films
Reverse bias breakdown and photocurrent gain in CH3NH3PbBr3 films Open
Perovskite films are promising candidates for fast, sensitive, and large area photodetectors. A gain in perovskite based detectors has been observed in several architectures, but a model describing the underlying mechanism is still missing…
View article: Light emission from nano- and microLED arrays
Light emission from nano- and microLED arrays Open
Nanometer- and Micrometer-scale LED arrays are useful not only for display applications, but also for specialized applications like lens-less microscopy, mask-less lithography or optogenetics. In these contexts, the spatial resolution of t…
View article: Role of Phase Nanosegregation in the Photoluminescence Spectra of Halide Perovskites
Role of Phase Nanosegregation in the Photoluminescence Spectra of Halide Perovskites Open
The study of MAPbI3 phase transitions based on temperature-dependent optical spectroscopy has recently gained a huge attention. Photoluminescence (PL) investigations of the tetragonal-orthorhombic transition suggest that tetrago…
View article: Individually Switchable InGaN/GaN Nano-LED Arrays as Highly Resolved Illumination Engines
Individually Switchable InGaN/GaN Nano-LED Arrays as Highly Resolved Illumination Engines Open
GaN-based light emitting diodes (LEDs) have been shown to effectively operate down to nanoscale dimensions, which allows further downscaling the chip-based LED display technology from micro- to nanoscale. This brings up the question of wha…
View article: Electromechanical field effects in InAs/GaAs quantum dots based on continuum <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si20.svg"><mml:mrow><mml:mover accent="true"><mml:mrow><mml:mi>k</mml:mi></mml:mrow><mml:mrow><mml:mo>→</mml:mo></mml:mrow></mml:mover><mml:mo>·</mml:mo><mml:mover accent="true"><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mo>→</mml:mo></mml:mrow></mml:mover></mml:mrow></mml:math> and atomistic tight-binding methods
Electromechanical field effects in InAs/GaAs quantum dots based on continuum and atomistic tight-binding methods Open
View article: Methylamine Gas Treatment Affords Improving Semitransparency, Efficiency, and Stability of CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub>‐Based Perovskite Solar Cells
Methylamine Gas Treatment Affords Improving Semitransparency, Efficiency, and Stability of CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub>‐Based Perovskite Solar Cells Open
High bandgap semitransparent solar cells based on CH 3 NH 3 PbBr 3 perovskites are attractive for building integration, tandem cells, and electrochemical applications. The lack of control of the CH 3 NH 3 PbBr 3 perovskite growth limit the…
View article: Temperature and intensity dependence of the open-circuit voltage of InGaN/GaN multi-quantum well solar cells
Temperature and intensity dependence of the open-circuit voltage of InGaN/GaN multi-quantum well solar cells Open
View article: Pursuing the Diffraction Limit with Nano-LED Scanning Transmission Optical Microscopy
Pursuing the Diffraction Limit with Nano-LED Scanning Transmission Optical Microscopy Open
Recent research into miniaturized illumination sources has prompted the development of alternative microscopy techniques. Although they are still being explored, emerging nano-light-emitting-diode (nano-LED) technologies show promise in ap…
View article: A Novel Approach for a Chip-Sized Scanning Optical Microscope
A Novel Approach for a Chip-Sized Scanning Optical Microscope Open
The recent advances in chip-size microscopy based on optical scanning with spatially resolved nano-illumination light sources are presented. This new straightforward technique takes advantage of the currently achieved miniaturization of LE…