Epitaxial heterodimensional structures for efficient tin halide perovskite LEDs

Environmentally friendly tin perovskites show promise as substitutes for their toxic lead counterparts in light-emitting diodes (LEDs), yet their device performance significantly trails behind that of lead perovskites. In a recent study published in Nature Nanotechnology, Wang et al. developed efficient tin-based perovskite LEDs with efficiency of 11.6% based on high-quality, large-sized epitaxial heterodimensional bilayer perovskite structure prepared via a straightforward spin-coating process.