ZnS赤外線感受性螢光體の分光感度について
1953 年 22 巻 7-8 号 p. 273-277
詳細
1953 年 22 巻 7-8 号 p. 273-277
The ZnS phosphors, into which were added the heavy metal Pb, Sn, Sb, Bi, or Mn as first activator and a small amount of copper as second activator, have been prepared and their spectral sensitivity for stimulation or quenching ofphosphorescence upon irradiation with IR invest gated.
According to the experimental results the Pb-activated phosphors and some Mn-activated one showed stimulation, and the others were of quenched type. All the phosphors had the two peaks of sensitivity at the wave-lengths 1.1-1.5μ and 0.7-0.9 μ and the general features of the curves were almost similar. The Mn-activated phosphors were of stimulated or quenched type, and their type was determined by concentration of Mn-activator.
Further, from these results is presented a comparatively simple mechanism that will be able to cover the most important and general behaviorof infrared responcibility after ultraviolet exitation.
