Issue 17, 2015

Effect of the Y : B ratio on phase purity and development of thermally stable nano-sized Eu+3-doped YBO3 red phosphor using sodium borohydride

Abstract

This research focuses on the effect of the Y : B ratio on phase purity and the development of thermally stable 10 mol% Eu3+-doped YBO3 red phosphor nanomaterial using a novel sodium borohydride based solution precursor route. An equimolar concentration of Y and B leads to the development of chemically and thermally stable un-doped and Eu3+-doped YBO3 up to 1300 °C. An impurity phase, Y3BO6, was observed at a higher temperature of around 1400 °C. FESEM micrographs indicate that the particles of Eu3+-doped YBO3 are agglomerated with peanut-like morphology having an average size of ∼50 nm at 800 °C, whereas the average agglomerated size was in between ∼200 nm and 1.5 μm, at 1200 °C. The particles of Eu3+-doped YBO3 are nearly spherical having size ∼8–10 nm at 800 °C and the size increases in the range of ∼30–100 nm at 1200 °C, as observed from TEM micrographs. In addition, the borohydride synthesized Eu3+-doped YBO3 phosphor calcined at 800 °C showed comparatively better colour purity (denoted as R/O ratio, i.e. the integral ratio of red to orange emission = 1.25) than the high temperature (1200 °C) calcined sample (R/O ratio = 0.97). Both the calcined powders indicated nearly reddish-orange colour based on calculated Commission Internationale de I'Eclairage (CIE) coordinates. The synthesis strategy followed in the current research work emphasizes the feasibility of synthesizing thermally stable Eu3+-doped YBO3 red phosphor materials by a borohydride route, which may be suitable for lighting applications.

Graphical abstract: Effect of the Y : B ratio on phase purity and development of thermally stable nano-sized Eu+3-doped YBO3 red phosphor using sodium borohydride

Supplementary files

Article information

Article type
Communication
Submitted
03 Mar 2015
Accepted
26 Mar 2015
First published
30 Mar 2015

Dalton Trans., 2015,44, 7765-7769

Author version available

Effect of the Y : B ratio on phase purity and development of thermally stable nano-sized Eu+3-doped YBO3 red phosphor using sodium borohydride

S. Srivastava, S. K. Behera and B. B. Nayak, Dalton Trans., 2015, 44, 7765 DOI: 10.1039/C5DT00875A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements