Studies on Luminescent Materials. Part 1. Theory of Zinc Sulphide-copper Crystal Phosphor
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In this paper, the author has attempted to interpret the properties of the zinc sulphide-copper crystal phosphor from the view point of zone-theory.<BR>(1) It was pointed out that the activation centre of zinc sulphide–copper phosphor consists of Cu ion surrounded by the ions of Zn and S.<BR>(2) The transition of electron of Cu<SUP>+</SUP> ion from the ground state <SUP>1</SUP><I>S</I><SUB>0</SUB> to the conduction band is responsible for the excitation bands of fluorescence.<BR>(3) The two fluorescence bands with maxima at 5250 Å and 4550 Å in this phosphor may be correlated with the electronic transitions<BR> ^3D_3 & →^1S_0 (α-band), <BR>^3D_2 & →^1S_0 (β-band), <BR>(4) If the electron in the excited states of Cu<SUP>+</SUP> ion absorbs heat energy, it makes a transition to the conduction band and be free to move in the phosphor, then the phosphor will show a phenomenon of the photoconduction.
- 公益社団法人 日本化学会の論文
公益社団法人 日本化学会 | 論文
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