Nature of the blue luminescence bands in PbWO₄

详细信息    查看全文

• 作者：Springis ; M. ; Tale ; V. ; Tale ; I.
• 关键词：PbWO₄ ; Thermostimulated luminescence ; Photoluminescence
• 刊名：Journal of Luminescence
• 出版年：1997
• 出版时间：June, 1997
• 年：1997
• 卷：72-74
• 期：Complete
• 页码：784-785
• 全文大小：113 K

文摘

The photoluminescence spectrum of PbWO₄ is composed of blue and green bands, previously attributed to the regular WO₄ group and to the defect-related WO₃ group, respectively. Untill now only green emission was observed in the thermostimulated luminescence (TSL) above 77 K. Investigation of the TSL spectra starting from 20 K indicates that the blue band, being definitely present at least in the 28 K TSL peak, is also due to recombination emission at defect sites.