A novel phosphor CaZnGe2O6:Bi3+ with persistent luminescence and photo-stimulated luminescence. (September 2018)

• Record Type: Journal Article
• Authors: Dou, Xiaojing; Xiang, Huawei; Wei, Peiling; Zhang, Shaoan; Ju, Guifang; Meng, Ziming; Chen, Li; Hu, Yihua; Li, Yang
• Is Part Of: Materials research bulletin. Volume 105(2018)
• Page Start: 226
• Page End: 230
• Publication Date: 2018-09
• Subjects: Near-ultraviolet -- Long persistent luminescence -- Photo-stimulated luminescence -- Germanate; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2018.04.047
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Fig. 1(a) PSL decay curves of CaZnGe2 O6 : 0.5%Bi 3+ sample under the different excitation wavelengths. (b) Persistent duration of CaZnGe2O6: 0.5%Bi3+. The inset is the photographs of CaZnGe2O6: 0.5%Bi3 + phosphor with and without the UV irradiation at 254 nm light. The dotted line represent the signal to noise ratio from the detector. Highlights: The CaZnGe2 O6 : Bi 3+ with the emission bands at 468 nm. The afterglow emission band (300–650 nm) almost covering the UV–vis spectral region. A afterglow time can last 12 h in the dark after ceasing the 254 nm irradiation. The excitation of VIS-NIR incoherent light can get the photo-stimulated luminescence. Abstract: Bi 3+ -activated phosphor with ultraviolet-visible persistent luminescence and photo-stimulated luminescence is synthesized via high temperature solid phase reaction. This phosphor shows a broad emission band from 300 nm to 700 nm, a bright persistent luminescence over 12 h after ceasing the excitation and the photo-stimulated luminescence under the excitation of visible to near-infrared light. This paper reports that the operational waveband of long persistent phosphor, CaZnGe2 O6 : Bi 3+, has been extended into the short-wavelength spectral region.