Related Experiment Video
Updated: Jun 25, 2025

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Velocity Map Imaging Photoelectron Spectroscopy of Silver Iodide Aerosol Particles
Danijela Danilović1, Laurent Nahon2, Gustavo A Garcia2
1Center of Excellence for Photoconversion, Vinča Institute of Nuclear Sciences - National Institute of Republic of Serbia, University of Belgrade, P.O. Box 522, 11001, Belgrade, Serbia.
Abstract:
The valence band electronic structure of isolated silver iodide nanoparticles (AgI NP) was investigated by vacuum-ultraviolet aerosol photoelectron spectroscopy using the velocity map imaging technique (VUV VMI-PES). The VUV VMI-PES results were obtained for polydisperse aerosol produced by aggregation of hydrocolloid of silver iodide particles 8-15 nm in size. The ionization energy of the AgI particles was found to be 6.0±0.1 eV with respect to the vacuum level. The DFT calculations showed that the main contribution to the density of AgI electronic states in the valence region originates from I 5p orbitals. The dependence of the asymmetry parameter on the electron energy showed that the value of the characteristic energy loss of excited photoelectrons was 2.7 eV, which coincided with the band gap of the nanomaterial.
Related Concept Videos
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
Atomic Emission Spectroscopy: Lab
Atomic Emission Spectroscopy: Instrumentation
Atomic Emission Spectroscopy: Overview
Electrospray Ionization (ESI) Mass Spectrometry
ESI utilizes electrical energy to transfer ions from the liquid phase of the sample into the...
Scanning Electron Microscopy
Fundamental Principles
Accelerated...

