Synthesis and photoluminescent features of Eu3+-doped NaGd(WO4)2 nanophosphors

Publication date: Available online 10 November 2019Source: Materials Research BulletinAuthor(s): Wei Zhang, Ruodong Zhang, Shudan Yang, Ru Wang, Liyan Na, Ruinian HuaAbstractThe preparation of Eu3+-doped NaGd(WO4)2 (NGW) nanophosphors was conducted by using a coprecipitation method. The characterization of the final products was performed in this work. The X-ray diffraction (XRD) results presented that our prepared NGW:Eu3+ phosphors are single-phase and belong to the tetragonal system, and the field emission scanning electron microscopy (FE-SEM) study showed that our synthesized samples consist of many irregular rod-like particles. The characteristic emissions due to Eu3+ transitions of 5D0→7FJ(J = 1- 4) were observed upon 395 nm excitation. Based on the Huang and Van Uitert models, the impact of Eu3+ concentration on the luminescent intensity was studied. The concentration quenching of Eu3+ ions in NGW nanophosphors was contributed to the electric dipole-dipole interaction. The red light emission of NGW:Eu3+ nanophosphors indicates the promising applications for white LED, flat panel displays and biological field.Graphical abstractEu3+-doped NaGd(WO4)2 (NGW) nanophosphors were synthesized via a coprecipitation method. The prepared NGW:Eu3+ phosphors belong to the tetragonal system and are composed of many irregular rod-like particles. The characteristic emissions due to Eu3+ transitions of 5D0→7FJ(J = 1- 4) were observed upon 395 nm excitation. Based...
Source: Materials Research Bulletin - Category: Materials Science Source Type: research

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