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10 Mar 2023 • Journal Article • Materials for Sustainable Development Conference (MATSUS)
Enhancing the Performance of State-of-the-Art Solar Cells Using Universal Hole Extraction Layer
AbstractOrganic solar cells (OSCs) have attracted much interest in recent years for their unique properties such as flexibility, light weight and the low cost and ease of their fabrication processes. While not destined to replace silicon- based technology, organic based solar cells provide a promising technology for wearables, windows, as well as light weight constructions that
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8 Feb 2023 • Preprint • arXiv
Bandwidth Control and Symmetry Breaking in a Mott-Hubbard Correlated Metal
AbstractIn Mott materials strong electron correlation yields a spectrum of complex electronic structures. Recent synthesis advancements open realistic opportunities for harnessing Mott physics to design transformative devices. However, a major bottleneck in realizing such devices remains the lack of control over the electron correlation strength. This stems from the complexity
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2 Feb 2023 • Journal Article • Advanced Materials
Zn-doped P-type InAs Nanocrystal Quantum Dots
AbstractDoped heavy metal-free III – V semiconductor nanocrystal quantum dots are of great interest both from the fundamental aspects of doping in highly confined structures, and from the applicative side of utilizing such building blocks in the fabrication of p-n homojunction devices. InAs nanocrystals, that are of particular relevance for short wave IR detection and emission
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31 Jan 2023 • Journal Article • Nanophotonics
On the relation between electrical and electro-optical properties of tunnelling injection quantum dot lasers
AbstractWe present a comprehensive study of the temperature dependent electronic and optoelectronic properties of a tunnelling injection quantum dot laser. The optical power-voltage ( P opt – V ) characteristics are shown to be correlated with the current-voltage ( I – V ) and capacitance-voltage ( C – V ) dependencies at low and elevated temperatures. Cryogenic temperature
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16 Jan 2023 • Journal Article • Nature Materials
From enhanced diffusion to ultrafast ballistic motion of hybrid light–matter excitations
AbstractTransport of excitons and charge carriers in molecular systems can be enhanced by coherent coupling to photons, giving rise to the formation of hybrid excitations known as polaritons. Such enhancement has far-reaching technological implications; however, the enhancement mechanism and the transport nature of these hybrid excitations remain elusive. Here we map the
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6 Jan 2023 • Journal Article • Physical Review X
Observation of 2D Cherenkov Radiation
AbstractFor over 80 years of research, the conventional description of free-electron radiation phenomena, such as Cherenkov radiation, has remained unchanged: classical three-dimensional electromagnetic waves. Interestingly, in reduced dimensionality, the properties of free-electron radiation are predicted to fundamentally change. Here, we present the first observation of
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2 Jan 2023 • Preprint • arXiv
Edge-based 2D alpha-In2Se3-MoS2 ferroelectric field effect device
AbstractHeterostructures based on two dimensional (2D) materials offer the possibility to achieve synergistic functionalities which otherwise remain secluded by their individual counterparts. Herein ferroelectric polarization switching in alpha-In2Se3 has been utilized to engineer multilevel non-volatile conduction states in partially overlapping alpha-In2Se3-MoS2 based
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14 Dec 2022 • Journal Article • The Applied Computational Electromagnetics Society Journal (ACES)
Advanced Numerical and Experimental Analysis of Ultra-Miniature Surface Resonators
AbstractMany scientific and technological applications make use of strong microwave fields. These are often realized in conjunction with microwave resonators that have small geometric features in which such fields are generated. For example, in magnetic resonance, large microwave and RF magnetic fields make it possible to achieve fast control over the measured electron or
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6 Dec 2022 • Journal Article • Lab on a Chip
A 3D-printed microfluidic gradient generator with integrated photonic silicon sensors for rapid antimicrobial susceptibility testing
AbstractWith antimicrobial resistance becoming a major threat to healthcare settings around the world, there is a paramount need for rapid point-of-care antimicrobial susceptibility testing (AST) diagnostics. Unfortunately, most currently available clinical AST tools are lengthy, laborious, or are simply inappropriate for point-of-care testing. Herein, we design a 3D-printed
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4 Dec 2022 • Journal Article • ChemPhysChem
Pulsed Electron-Nuclear Double Resonance in the Fourier Regime
AbstractNuclear magnetic resonance (NMR) spectroscopy provides atomic-level molecular structural information. However, in molecules containing unpaired electron spins, NMR signals are difficult to measure directly. In such cases, data is obtained using the electron-nuclear double resonance (ENDOR) method, where nuclei are detected through their interaction with
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