Groundbreaking study reveals small polaron effect in Dion-Jacobson 2D lead halide perovskites, enhancing spin lifetime and optoelectronic performance
Peer-Reviewed Publication
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A research team from Southern University of Science and Technology discovered a small polaron effect induced by a giant deformation potential in Dion-Jacobson phase two-dimensional (2D) lead halide perovskites. The study provides direct evidence of the interplay between charge carriers and the lattice, showing up to a tenfold increase in spin lifetime, significantly improving optoelectronic properties. This discovery offers new insights into the design of high-performance materials and devices for next-generation optoelectronics.
Blazars are active galaxies that emit narrow jets of ionised matter from their centres, aimed towards Earth. Depending on properties of the electromagnetic radiation emitted by the jets, astronomers divide such objects into different, clearly defined classes. However, with the BL Lacertae blazar, located in the background of the Lizard constellation, things turn out to be not quite so simple.
At least two mass extinction events in Earth's history were likely caused by the "devastating" effects of nearby supernova explosions, a new study suggests. Researchers at Keele University say these super-powerful blasts – caused by the death of a massive star – may have previously stripped our planet's atmosphere of its ozone, sparked acid rain and exposed life to harmful ultraviolet radiation from the Sun. They believe a supernova explosion close to Earth could be to blame for both the late Devonian and Ordovician extinction events, which occurred 372 and 445 million years ago respectively.