- 作者: Drickamer, Harry G. ; Lang, Jiamin ; Dreger, Zbigniew A.
- 作者服務機構: School of Chemical Sciences, Dept. of Physics and Frederick Seitz Materials Research Laboratory, Univ. of Illinois, Urbana, Illinois, U.S.A.
- 中文摘要:
In this paper we present two recent studies utilizing pressure tuning spectroscopy. In the first of these we use high pressure photoluminescence to characterize the large difference in luminescence efficiency at one atmosphere between [ Ru(bpy)/sub 3 / ] /sup 2+/ and [ Ru(bpy)/sub 2/ py/sub 2/ ] /sup 2+/ ions. The lower efficiency of the latter ion is due to dissipation of excitation energy by motion of the pyridines.
The second study involves a combination of photo- and thermoluminescence of doped ZnS phosphors of technical importance. In the phosphor doped with Cl/sup -/ and Cu/sup +/ we demonstrate that the donors are pinned to the conduction band and the acceptors to the valence band. We invoke the presence of " deep levels" to describe the behavior of the traps. In the phosphor doped with Mn/sup +2/ plus Cl/sup -/ and Cu/sup +/ a series of traps appeared as the pressure was increased. By comparison with ZnS doped only with Mn/sup +2/ it was possible to assign some of the traps to Cl/sup -/ and others to Mn/sup +2/. - 英文摘要: --
- 中文關鍵字: Pressure Tuning Spectroscopy; Luminesence Efficiency; Phosphor; Thermoluminescence; Photoluminescence
- 英文關鍵字: 壓力波長調整光譜術;發光效率;燐光質;熱發光;光發光