Related Experiment Video
Updated: Aug 15, 2026

Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications
Published on: January 22, 2019
[Electrolytic coloration and spectral property of potassium bromide crystals]
Cui-ying Song1, Hong-en Gu, Yan-ru Wu
1Department of Physics, Tianjin University, Tianjin 300072, China.
Abstract:
Potassium bromide crystals were effectively colored electrolytically with a lab-made electrolytic apparatus at 693 K by applying a DC 1 200 V voltage. A lot of F, R, M and N type and some new unknown color centers were produced in the colored potassium bromide crystals, and the formation and transformation mechanisms of the color centers were presented. Spectral measurement and analysis were carried out systematically for the colored crystals, the spectral bands of corresponding color centers were reasonably resolved from the measured spectra, and the corresponding spectral parameters of the spectral bands were accurately determined by using spectral decomposition.
More Related Videos
Related Concept Videos
Electrolysis
Precipitation of Ions
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
Qualitative Analysis
For instance, group IV...
Ionic Strength: Effects on Chemical Equilibria
In this solution, the primary cation—the calcium...
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Electron Configuration of Multielectron Atoms

