Interstitial and substitutional doping of Mn in 2D PEAPbBr and BAPbBr perovskites.

Mn doping imposes intriguing optoelectronic properties on lead-halide perovskites; however, its impact on their crystal structure remains unclear. This study investigates the consequences of interstitial and substitutional Mn doping on the lattice-strain and interplanar spacings of 2D perovskites and correlates the structural changes to their optical properties.

Unraveling the Origin of an Unusual Shift in the Electroluminescence of 1D CsCuI Light-Emitting Diodes.

Lead-free low-dimensional copper-based metal halides are promising luminescent materials for broadband LEDs owing to their broad self-trapped exciton (STE) emission. However, recently, in 1D CsCuI, a discrepancy between their electroluminescence (EL) and photoluminescence (PL) has been observed. As a result, the overall output color from LEDs is significantly different than the anticipated emission.