Concept
Taux de cristallinité
Publications associées (122)
Characterizing crystalline defects in single nanoparticles from angular correlations of single-shot diffracted X-rays
Christoph Bostedt, Alessandro Colombo, Giorgio Rossi
Characterizing and controlling the uniformity of nanoparticles is crucial for their application in science and technology because crystalline defects in the nanoparticles strongly affect their unique properties. Recently, ultra-short and ultra-bright X-ray ...
INT UNION CRYSTALLOGRAPHY2020Optoelectronic and magnetic properties induced by atomic defects in two-dimensional semiconductors
Two-dimensional (2D) materials have attracted increasing attention over the last decade owing to their remarkable mechanical, electrical and optical properties. Following the groundbreaking discovery of graphene, a plethora of other atomically-thin materia ...
EPFL2020Giant anomalous Hall effect in quasi-two-dimensional layered antiferromagnet Co1/3NbS2
László Forró, Helmuth Berger, Edoardo Martino
The discovery of the anomalous Hall effect (AHE) in bulk metallic antiferromagnets (AFMs) motivates the search of the same phenomenon in two-dimensional (2D) systems, where a quantized anomalous Hall conductance can, in principle, be observed. Here we pres ...
AMER PHYSICAL SOC2020The Synergism of DMSO and Diethyl Ether for Highly Reproducible and Efficient MA(0.5)FA(0.5)PbI(3)Perovskite Solar Cells
Mohammad Khaja Nazeeruddin, Yi Zhang, Hiroyuki Kanda, Yonghui Lee, Keith Gregory Brooks, Ruiyuan Hu, Min Chen
Composition and film quality of perovskite are crucial for the further improvement of perovskite solar cells (PSCs), including efficiency, reproducibility, and stability. Here, it is demonstrated that by simply mixing 50% of formamidinium (FA(+)) into meth ...
2020Revealing the Perovskite Film Formation Using the Gas Quenching Method by In Situ GIWAXS: Morphology, Properties, and Device Performance
Sandy Sanchez Alonso, Ulf Anders Hagfeldt, Rodrigo Szostak
The optoelectronic properties, morphology, and consequently the performance of metal halide perovskite solar cells are directly related to the crystalline phases and intermediates formed during film preparation. The gas quenching method is compatible with ...
2020Self-Crystallized Multifunctional 2D Perovskite for Efficient and Stable Perovskite Solar Cells
Mohammad Khaja Nazeeruddin, Sanghyun Paek, Yonghui Lee, Kyung Taek Cho, Aron Joel Huckaba, Valentin Ianis Emmanuel Queloz, Albertus Adrian Sutanto, Hobeom Kim
Recently, perovskite solar cells (PSC) with high power-conversion efficiency (PCE) and long-term stability have been achieved by employing 2D perovskite layers on 3D perovskite light absorbers. However, in-depth studies on the material and the interface be ...
WILEY-V C H VERLAG GMBH2020Building a Consistent and Reproducible Database for Adsorption Evaluation in Covalent-Organic Frameworks
Berend Smit, Daniele Ongari, Christoph Leopold Talirz, Aliaksandr Yakutovich
We present a workflow that traces the path from the bulk structure of a crystalline material to assessing its performance in carbon capture from coal's postcombustion flue gases. This workflow is applied to a database of 324 covalent-organic frameworks (CO ...
2019Synthesis, Characterization, and Applications of Visible Light Active Metal-Organic Frameworks
Understanding how crystalline materials are assembled is important for the rational design of metal-organic frameworks (MOFs). Controlling their formation can allow researchers to streamline the synthesis of new materials as well as control their propertie ...
EPFL2019High-Field C-13 Dynamic Nuclear Polarization in Nanodiamond
Stefano Alberti, Jean-Philippe Ansermet, Jérémy Genoud, Serguei Sekatski, Murari Soundararajan, Dongyoung Yoon
Hyperpolarization in diamond via dynamic nuclear polarization (DNP) has attracted a lot of interest for various applications as diamond exhibits extremely long C-13 spin relaxation times and has endogenous polarizing agents in the form of crystalline defec ...
2019Dual effect of humidity on cesium lead bromide: enhancement and degradation of perovskite films
Michael Graetzel, Mohammad Ibrahim Dar, Simone Meloni
CsPbBr3 perovskite is highly desired to fabricate many optoelectronic devices: high photovoltage solar cells, tandem solar cells, light-emitting diodes, lasers, photodetectors, field effect transistors etc. However, to realize these applications, resistanc ...
ROYAL SOC CHEMISTRY2019