Publications by authors named "Fabian A C Apfelbeck"
Article Synopsis
- Poly(ethylene oxide) (PEO)-based composite electrolytes (PCEs) are important for making safer and better lithium-metal batteries.
- Researchers used special X-ray techniques to study how these PCEs change when used in batteries, focusing on their structure and arrangement.
- They found that certain chemical reactions change the structure of the PCE, and that lithium movement inside the battery affects the size and distance of certain areas in the material, helping to improve battery performance.
Perovskite solar cells (PSCs) are attracting widespread research and attention as highly promising candidates in the field of electronic photovoltaics owing to their exceptional power conversion efficiency (PCE). However, rigid or flexible PSCs still face challenges in preparing full-coverage and low-defect perovskite films, as well as achieving highly reproducible and highly stable devices. Herein, a multifunctional additive 2-aminoethyl hydrogen sulfate (AES) is designed to regulate the film crystallization and thereby form flat and pinhole-free perovskite films.
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- * A study using GIWAXS reveals that microstrain in triple-cation CsMAFA perovskite films varies from the surface to deeper layers, but the overall crystalline orientation remains stable under these conditions.
- * While heat leads to quick degradation and decomposition of the perovskite structure, UV and sunlight exposure actually help the films self-optimize, resulting in smoother structures with less surface potential variation.
Article Synopsis
- A quantum dot film on a flexible substrate undergoes a phase transition from tetragonal to cubic and back to tetragonal as uniaxial strain is applied, which is observed using grazing-incidence small-angle X-ray scattering (GISAXS).
- Changes in optoelectronic properties, indicated by photoluminescence (PL) measurements, correlate with the phase transitions and involve variations in inter-dot distances.
- The study highlights the importance of understanding strain effects on quantum dot films for advancing flexible electronics and solar technologies.