Rapid nonradiative relaxation from high-excited electronic states to lower-excited electronic states in luminescent materials leads to radiative transitions only from the lowest excited state. This behavior is observed in most luminescent materials. One notable exception is Tm<sup>2+</sup>, which is known to show luminescence from up to three 4f<sup>12</sup>5d<sup>1</sup> excited states. Here we report a study that explains the deviant behavior of Tm<sup>2+</sup>. Using ab initio wave function-based embedded-cluster calculations in Tm<sup>2+</sup> -doped CsCaBr<sub>3</sub> and CsCaCl<sub>3</sub>, we show that the manifold of 4f<sup>12</sup>5d<sup>1</sup> excited states shows various energy gaps for states with parallel potential energy surf...
Organic–inorganic perovskites are one of the most promising photovoltaic materials for the design of...
Mixed-halide perovskites prepared from met...
Low-dimensional metal halides have been the focus of intense investigations in recent years followin...
Rapid nonradiative relaxation from high-excited electronic states to lower-excited electronic states...
Rapid nonradiative relaxation from high-excited electronic states to lower-excited electronic states...
In this study, we systematically vary the Cl/Br and Br/I ratios in CsCaX3:Tm2+ (X = Cl, Br, I) and h...
Tm2+-doped halides exhibit excellent properties for use in Luminescence Solar Concentrator (LSC) app...
Optical excitation of ions or molecules typically leads to an expansion of the equilibrium bond leng...
Abstract With only a few deep-level defect states having a high formation energy and dominance of sh...
The prospect of using Tm2+-doped halides for luminescence solar concentrators (LSCs) requires a thor...
Emission characteristics of metal halide perovskites play a key role in the current widespread inves...
We investigate the origin of the broadband visible emission in layered hybrid lead-halide perovskite...
Metal halide perovskites are a class of materials which have recently achieved remarkable success i...
Halide perovskites possess enormous potential for various optoelectronic applications. Presently, a ...
Optical excitation of ions or molecules typically leads to an expansion of the equilibrium bond len...
Organic–inorganic perovskites are one of the most promising photovoltaic materials for the design of...
Mixed-halide perovskites prepared from met...
Low-dimensional metal halides have been the focus of intense investigations in recent years followin...
Rapid nonradiative relaxation from high-excited electronic states to lower-excited electronic states...
Rapid nonradiative relaxation from high-excited electronic states to lower-excited electronic states...
In this study, we systematically vary the Cl/Br and Br/I ratios in CsCaX3:Tm2+ (X = Cl, Br, I) and h...
Tm2+-doped halides exhibit excellent properties for use in Luminescence Solar Concentrator (LSC) app...
Optical excitation of ions or molecules typically leads to an expansion of the equilibrium bond leng...
Abstract With only a few deep-level defect states having a high formation energy and dominance of sh...
The prospect of using Tm2+-doped halides for luminescence solar concentrators (LSCs) requires a thor...
Emission characteristics of metal halide perovskites play a key role in the current widespread inves...
We investigate the origin of the broadband visible emission in layered hybrid lead-halide perovskite...
Metal halide perovskites are a class of materials which have recently achieved remarkable success i...
Halide perovskites possess enormous potential for various optoelectronic applications. Presently, a ...
Optical excitation of ions or molecules typically leads to an expansion of the equilibrium bond len...
Organic–inorganic perovskites are one of the most promising photovoltaic materials for the design of...
Mixed-halide perovskites prepared from met...
Low-dimensional metal halides have been the focus of intense investigations in recent years followin...