Sascha Feldmann

2 months ago | nature.com | Adam Clancy |Naitik A. Panjwani |Loren Picco |Alexander Eaton |Sascha Feldmann |Felix R. Fischer | +3 more

AbstractNanoribbons, nanometre-wide strips of a two-dimensional material, are a unique system in condensed matter. They combine the exotic electronic structures of low-dimensional materials with an enhanced number of exposed edges, where phenomena including ultralong spin coherence times1,2, quantum confinement3 and topologically protected states4,5 can emerge.

Jul 26, 2024 | link.aps.org | Sean Bourelle |Xie Zhang |Sascha Feldmann

Popular Summary Hybrid halide perovskites show impressive performance for optoelectronic applications, which raises key questions on the direct/indirect nature of the bandgap, their unexpected defect tolerance, and physical mechanism of bright luminescence. Combining theory and experiment, the authors show that the nature of the bandgap of hybrid halide perovskites spatially varies from a more direct surface region to a slightly indirect bulk.

Mar 25, 2024 | nature.com | Francesco Furlan |Juan Manuel Moreno-Naranjo |Nicola Gasparini |Sascha Feldmann

AbstractCircularly polarized (CP) light-emitting diodes (LEDs) hold great potential for next-generation technologies, from efficient photonic to room-temperature quantum devices. Chiral materials enable the generation of CP electroluminescence in LEDs through several different mechanisms, depending on the choice of material and device architecture.

Jun 12, 2023 | nature.com | Sascha Feldmann