Cathodoluminescence of cinnabar evidence of a donor–acceptor-type transition

Abstract

Measurements are made of spectrum shift with excitation intensity by means of time resolved spectroscopy, over a broad emission band of mercuric sulphide peaked at 1·65 eV with a width of 320 meV. The behaviour of the decay is measured at 4 K for different emission band energies. It is shown that the experimental results are in agreement with a donor–acceptor type “t‐shift”, “j‐shift”, and the t−n law of the light decay. Since the band is very broad, the interaction of the lattice with the different pairs is considered.