Jump to main content
Jump to site search


A novel Na3La(PO4)2/LaPO4:Eu blue-red dual-emitting phosphor with high thermal stability for plant growth lighting

Author affiliations

Abstract

A novel Na3La2(PO4)3:xEu (Na3La(PO4)2/LaPO4:xEu) blue-red dual-emission diphasic phosphor with high thermal stability is successfully synthesized by a high temperature solid state reaction. X-ray powder diffraction (XRD) analysis verified that the host of this dual emitting phosphor is a composite material composed of two crystals: Na3La(PO4)2 and LaPO4, which would realize the energy transfer between the two phases and then greatly enhance the luminescence properties. When compared with the single-phase phosphor Na3La(PO4)2:xEu, the photoluminescence (PL) spectra of the as-synthesized diphasic phosphor showed significantly enhanced blue emission peaking at 422 nm of Eu2+ (5d-4f, a broadband at around 422 nm) and red emission peaking at 594 nm of Eu3+ (5D07F1,2, 594 and 621 nm) under UV excitation. Moreover, the phosphor exhibited a high thermal stability at 150 °C with up to 98.5% luminescence retention after Li+ co-doping, which should be attributed to the introduction of several defects. The emission spectra matched well with the photosynthetic action spectra (PAS) in plants, indicating that the Na3La2(PO4)3:xEu phosphor has a promising application in plant growth LED lighting.

Graphical abstract: A novel Na3La(PO4)2/LaPO4:Eu blue-red dual-emitting phosphor with high thermal stability for plant growth lighting

Back to tab navigation

Supplementary files

Publication details

The article was received on 05 Dec 2018, accepted on 17 Jan 2019 and first published on 17 Jan 2019


Article type: Paper
DOI: 10.1039/C8TC06119J
Citation: J. Mater. Chem. C, 2019, Advance Article

  •   Request permissions

    A novel Na3La(PO4)2/LaPO4:Eu blue-red dual-emitting phosphor with high thermal stability for plant growth lighting

    M. Xia, X. Wu, Y. Zhong, Z. Zhou and W. Wong, J. Mater. Chem. C, 2019, Advance Article , DOI: 10.1039/C8TC06119J

Search articles by author

Spotlight

Advertisements