Related Experiment Video
Updated: Sep 18, 2025

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
Published on: August 17, 2017
Competing Self-Trapped Exciton States and Multiple Emission Pathways in BiVO4
Tobias Möslinger1, Nicklas Österbacka1, Julia Wiktor1
1Chalmers University of Technology, Department of Physics, 41296 Gothenburg, Sweden.
None:
Transition metal oxides, such as BiVO4, have attracted significant attention for their potential in photoelectrochemical water-splitting. BiVO4, a model material in this area, is prone to charge localization in the form of small polarons. Recently, self-trapped excitons (STEs) in BiVO4 have been experimentally observed, but their precise nature remains elusive. In this study, we employ time-dependent density functional theory (TD-DFT) with a nonempirical PBE0(α) hybrid functional to investigate the localization, stability, and optical properties of STEs in BiVO4. Our results reveal two distinct localized exciton configurations with comparable energies. We show that the emission from a single STE configuration leads to multiple peaks in the emission spectrum, originating from different types of internal transitions. The positions of peaks in the calculated optical spectra are in good agreement with experimental observations.
More Related Videos
12:57Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
Published on: October 13, 2017
06:08Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
Published on: December 27, 2018
Related Concept Videos
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...
Photoluminescence: Applications
Deactivation Processes: Jablonski Diagram
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...
UV–Vis Spectroscopy: Molecular Electronic Transitions
Variables Affecting Phosphorescence and Fluorescence