Color Centers Induced by Neutron Irradiation in ZnS Single Crystals

概要

論文の詳細を見る
Correlations among the changes in optical density due to illumination with uv, 425-, or 540-mμ light have been examined of the uv, 390-, 425-, and 540-mμ bands introduced by neutron irradiation in ZnS single crystals. The photosensitive behavior before and after isochronal annealing of the samples and the analysis of the intensity distribution of the 425- and 540-mμ bands reveal that the 425-mμ band consists of a broad and narrow bands, and that this broad band and the 540-mμ band may have the same origin of absorption, The narrow 425-mμ band and the 390-mμ band disappear by isochronal annealing up to 340° and 480℃, respectively. The photosensitive, uv band and the other visible bands begin to disappear from the step at 520℃. Activation energy for the defects responsible for 540-mμ band has been estimated to be 2.2eV. A reasonable placement of the energy levels has been made of these absorption centers.
社団法人日本物理学会の論文
1967-09-05