Thin film solar cell materials such as 3D metal halide perovskites are cheaper alternatives to silicon. Presently, the conversion efficiency of lead is 25.5% (2021), which represents an increase more than 550% since their discovery in 2009 (3.8%). Despite this remarkable progress, concerns about toxicity have sparked quest for possible substitutes, particular, tin perovskites. This review cover...

Perovskites are mixed-metal oxides that are attracting much scientific and application interest owing to their low price, adaptability, and thermal stability, which often depend on bulk and surface characteristics. These materials have been extensively explored for their catalytic, electrical, magnetic, and optical properties. They are promising candidates for the photocatalytic splitting of wa...

– The lattice parameters of tetragonal strontium titanate are determined to about 1 part in 10 with penetrating X-rays. While no peculiarity is detected in a bulk sample, a distinct anomaly at 37K is observed in an optically polished thin platelet derived from the same single crystal. This suggests that the anomaly is related to a high density of dislocations. A possible mechanism is that dislo...

The relatively easy tunability of perovskites’ energy gap, as well the synthesis mixed halide perovskites, make them highly versatile and compatible with others semiconductor materials to produce efficient...

Much attention has been devoted to the synthesis and characterization of organic–inorganic multilayered perovskites owing to the tunability of their structural features.1–5 The physical and structural properties of these compounds can be fine tuned by substituting or tailoring the organic layers or by modulating the thickness of the perovskite inorganic slabs. Applications of layered perovskite...

The objective of data mining is to sort through large amounts of data in order to find a particular result that the user is searching for. As the size of the database being searched grows the probability of finding the result increases. However the path traveled to find the result may get more difficult. There are many challenges in deciding which turn to take, and information to keep, in the s...

M of controlling semiconductor bandgaps are of great importance in materials design. In particular, fabrication of layered heterostructures with controlled thickness and composition allows for the composite’s electronic structures to be modulated. In recent decades, 2D organic−inorganic perovskites have gained attention as self-assembling heterostructures, whose optoelectronic properties can be...

The Helmholtz (vibrational) free energy of ABX 3 perovskites is modelled as a 3rd-order polynomial temperature. Then, highly accurate machine-learning models are trained to predict the stability and phase transition in competing phases perovskites.