Concept
Schottky defect
Publications associées (177)
III-N blue-emitting epi-structures with high densities of dislocations: Fundamental mechanisms for efficiency improvement and applications
Since the dawn of humanity, human beings seeked to light their surroundings for their well-being, security and development. The efficiency of ancient lighting devices, e.g. oil lamps or candles, was in the order of 0.03-0.04% and jumped to 0.4-0.6% with th ...
EPFL2024Nanolithography of the nanocorral structure of chemisorbed oxygen atoms on the graphitic lattice
Kumar Varoon Agrawal, Shaoxian Li
Controlled atomic patterning is an attractive tool to fine tune properties of graphitic lattice. Several O-functionalized derivatives of graphitic lattice have been widely studied, e.g., graphene oxide, reduced graphene oxide, and functionalized carbon nan ...
Oxford2024Synergistic Redox Modulation for High-Performance Nickel Oxide-Based Inverted Perovskite Solar Modules
Mohammad Khaja Nazeeruddin, Bin Ding, Xianfu Zhang, Bo Chen, Yan Liu
Nickel oxide (NiOx)-based inverted perovskite solar cells stand as promising candidates for advancing perovskite photovoltaics towards commercialization, leveraging their remarkable stability, scalability, and cost-effectiveness. However, the interfacial r ...
Hoboken2024Interface connection of functionalized carbon nanotubes for efficient and stable perovskite solar cells
Mohammad Khaja Nazeeruddin, Jianxing Xia, Ruiyuan Hu
The ionic defects of hetero-junction interfaces always attract and trap carriers via surface electrostatic forces, which are crucial for the efficiency and intrinsic stability of perovskite solar cells (PSCs). Herein, functionalized carbon nanotubes (CNTs) ...
ROYAL SOC CHEMISTRY2023The nanoscale impact of individual nonradiative point defects on InGaN/GaN quantum wells
Thomas Fjord Kjaersgaard Weatherley
Today's world depends on optoelectronic devices: light-emitting diodes illuminate our houses and backlight the displays on our gadgets, while laser diodes underpin fibre-optic communication. Such optoelectronic devices rely on crystalline semiconductor het ...
EPFL2023Zn3P2 as an earth-abundant photovoltaic material: from growth to device
The development of cost-effective and earth-abundant semiconducting materials is imperative for the sustainable deployment of photovoltaic technology. Zinc phosphide (Zn3P2) is a promising candidate for terawatt-scale electricity generation. It has a near- ...
EPFL2023Defect-induced magnetism in homoepitaxial SrTiO3
Mihai Adrian Ionescu, Daesung Park
Along with recent advancements in thin-film technologies, the engineering of complex transition metal oxide heterostructures offers the possibility of creating novel and tunable multifunctionalities. A representative complex oxide is the perovskite stronti ...
AIP Publishing2022In Operando, Photovoltaic, and Microscopic Evaluation of Recombination Centers in Halide Perovskite-Based Solar Cells
Ulf Anders Hagfeldt, Henry Snaith, Silver Hamill Turren Cruz
The origin of the low densities of electrically active defects in Pb halide perovskite (HaP), a crucial factor for their use in photovoltaics, light emission, and radiation detection, remains a matter of discussion, in part because of the difficulty in det ...
AMER CHEMICAL SOC2022Stoichiometry modulates the optoelectronic functionality of Zinc Phosphide (Zn3-xP2+x)
Anna Fontcuberta i Morral, Elias Zsolt Stutz, Santhanu Panikar Ramanandan, Mischa Samuel Flór, Diego Armando Sandoval Salaiza, Jean-Baptiste Leran, Mahdi Zamani, Simon Robert Escobar Steinvall, Rajrupa Paul, Mirjana Dimitrievska, Maria Chiara Spadaro
Predictive synthesis–structure–property relationships are at the core of materials design for novel applications. In this regard, correlations between the compositional stoichiometry variations and functional properties are essential for enhancing the perf ...
2022