On the Infrared-Sensitive Behaviors of Some Doubly Activated ZnS Phosphors
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概要
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The quenching and stimulation of phosphoresent brightness under infrared irradiation, and their spectral sensitivities, about some ZnS doubly activated phosphors, have been investigated as well as the photocurrents induced simultaneously. A model is proposed which contains two types of electron traps, namely traps associated with emission levels at the activator and isolated traps. Theoretical calculations based on this model are compared to the experimental results for nonstationary behavior. The comparison shows that nonradiative transitions from the conduction band to the filled band, and so-called infrared-sensitive "quasi-direct transitions" from the associated traps to the activators become negligible a few minutes after the ceasing of ultraviolet excitation, and then the proposed theory becomes available exactly.
- 社団法人日本物理学会の論文
- 1954-08-25
著者
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Asano Sumitada
Department Of Electronic Engineering Faculty Of Technology Okayama University Of Science
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Asano Sumitada
Department Of Physics. Faculty Of Sclence Okayama University
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