The nanocrystal formation decreases the phonon energy and the addition of sensitizer is an important way to increase the luminescence efficiency. 形成纳米晶可降低声子能量，敏化剂的加入是提高发光效率的重要途径。
The longitudinal and transverse optical phonon energies were obtained by the Raman scattering and the far infrared reflectivity measurement. 纵向和横向光学声子能量是用拉曼散射和红外线反射量测所获得的。
