Effect of partially replacement of Gd3+ ions on fluorescence properties of YBO3:Eu3+ phosphor synthesized via precipitation method

• Published in: Optical materials Vol. 39; pp. 74 - 80
• Main Authors: Koparkar, K.A., Bajaj, N.S., Omanwar, S.K.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.01.2015
• Subjects: (Y(1−x)Gdx)BO3:0.01Eu3; CIE diagram; Optical material; Precipitation method; UV–vis analysis; Optical material; Precipitation method; CIE diagram; (Y(1−x)Gdx)BO3:0.01Eu3; UV–vis analysis
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/j.optmat.2014.11.001

[Display omitted] •The proposed material was successfully synthesized via precipitation method.•Shifting of peak position in XRD pattern from YBO3:Eu3+ to GdBO3:Eu3+with same crystal structure studied in details.•Effect of Gd3+ ions on fluorescence properties of YBO3:Eu3+ studied in details.•The outstanding enhancement in fluorescence properties, when molar concentration of Gd3+ ions in (Y, Gd)BO3:Eu3+ increased.•The increasing energy band gap, when Y to Gd ions ratio increased in (Y, Gd)BO3:Eu3+. The series of (Y(1−x)Gdx)BO3:0.01Eu3+ phosphors was successfully synthesized by precipitation method. All phosphors were characterized by X-ray diffraction pattern (XRD) for crystalline structure and UV–vis, photoluminescence (PL) and decay curves measurements were carried out to characterize their optical properties. The PL emission spectra of (Y(1−x)Gdx)BO3:0.01Eu3+ phosphors indicated that red–orange (595nm) color could be well excited by 233nm. The effect of x (Gd3+ ions) increases in (Y(1−x)Gdx)BO3:0.01Eu3+ on PL properties has been examined. The results showed that increment of x molar concentration in (Y(1−x)Gdx)BO3:0.01Eu3+ would lead to a outstanding enhancement of fluorescence intensity. The chromaticity coordinates (CIE) were calculated. The R/O ratio of the luminescence intensity of 5D0→7F2 (red) to 5D0→7F1 (orange) transitions were very well increases with the increasing percentage of Gd3+ ions in (Y(1−x)Gdx)BO3:0.01Eu3+ phosphor.