publication . Preprint . Article . 2018

CsPbBr 3 perovskites: Theoretical and experimental investigation on water-assisted transition from nanowire formation to degradation

B. Akbali; G. Topcu; T. Guner; M. Ozcan; M. M. Demir; H. Sahin;
Open Access English
  • Published: 02 Mar 2018
Abstract
Recent advances in colloidal synthesis methods have led to increased research focus on halide perovskites. Due to highly ionic crystal structure of perovskite materials, stability issue pops up especially against polar solvents such as water. In this study, we investigate water-driven structural evolution of CsPbBr3 by performing experiments and state-of-the-art first-principles calculations. It is seen that while optical image shows the gradual degradation of yellowish-colored CsPbBr3 structure under daylight, UV illumination reveals that the degradation of crystals takes place in two steps; transition from blue-emitting to green-emitting structure and and then...
Subjects
free text keywords: Condensed Matter - Materials Science, Physics - Applied Physics, Raman spectroscopy, symbols.namesake, symbols, Perovskite (structure), Crystal, Degradation (geology), Nanowire, Photoluminescence, Molecule, Materials science, Perovskite, chemistry.chemical_compound, chemistry, Chemical physics
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