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摘要
The ultraviolet-induced one-dimensional vibration of Ti ions in the red phosphor Sr(Ti-0.939,Al-0.061)O-3:Pr3+ was successfully visualized using high-resolution X-ray diffraction, which was already predicted by X-ray absorption spectroscopy. The vibration of Ti 3d-e(g) states becomes clear with decreasing temperature, accompanied by the addition of blue-green luminescence intrinsic to SrTiO3 at low temperatures. These results clearly indicate that a weak coupling between photoexcited electrons and the T-1u phonon mode induces an anharmonic vibration of Ti ions.
- 出版日期2013-9
