Inverse size-dependent Stokes shift in strongly quantum confined CsPbBr perovskite nanoplates.

Colloidal semiconductor nanocrystals (NCs) are used as bright chromatic fluorophores for energy-efficient displays. We focus here on the size-dependent Stokes shift for CsPbBr nanocrystals. The Stokes shift, , the difference between the wavelengths of absorption and emission maxima, is crucial for display application, as it controls the degree to which light is reabsorbed by the emitting material reducing the energetic efficiency.

Thin Layer Buckling in Perovskite CsPbBr Nanobelts.

Flexible semiconductor materials, where structural fluctuations and transformation are tolerable and have low impact on electronic properties, focus interest for future applications. Two-dimensional thin layer lead halide perovskites are hailed for their unconventional optoelectronic features. We report structural deformations via thin layer buckling in colloidal CsPbBr nanobelts adsorbed on carbon substrates.