Self-Trapped Emissions in 2D Lead-Free Halide Perovskites Driven by Divalent Spacer Cations
Abstract
The mono- and divalent spacer cation investigation in sodium/indium-based 2D double perovskites revealed significant impacts on optoelectronic properties due to distortions in the inorganic layers. The strong electron-phonon coupling in a novel lead-free Dion-Jacobson phase highlights a promising class for broad-emission devices based on self-trapped excitons (STE), offering enhanced structural stability.
- This article is part of the themed collection: Perovskites