Jump to main content
Jump to site search

Issue 14, 2019
Previous Article Next Article

Near-infrared-laser-driven robust glass-ceramic-based upconverted solid-state-lighting

Author affiliations

Abstract

Laser lighting, generally consisting of a blue laser and downconversion phosphors, is considered to be the next promising form of illumination to replace traditional LED lighting. However, irradiation with a high-powered blue laser will inevitably cause significant thermal attack, which places a high demand on phosphor converters as well as on device architecture. In this work, a proof-of-concept prototype of near-infrared laser-driven upconversion solid-state-lighting is proposed. Robust lanthanide doped α/β-NaYF4 embedded glass ceramics are developed as upconverted color converters and a routine 980 nm laser is used as the pumping source for its relatively low thermal effect and perfect resonance with Yb3+ sensitizers. Stable and bright upconversion white light is indeed produced by coupling a Yb/Tm/Er doped α-NaYF4 glass ceramic with a 980 nm laser, but the luminous efficiency and energy efficiency are only 0.3 lm W−1 and 0.12%, respectively, owing to low Er doping concentration. As an alternative, a stacking structure of Yb/Tm doped and Yb/Er doped glass ceramics is designed as a color converter to improve the luminous efficiency up to 1.0 lm W−1 and energy efficiency up to 0.5% under a laser power density of 275 W cm−2. It is believed that this research will provide a new idea for laser lighting and open up the application field of glass ceramics.

Graphical abstract: Near-infrared-laser-driven robust glass-ceramic-based upconverted solid-state-lighting

Back to tab navigation

Supplementary files

Publication details

The article was received on 31 Jan 2019, accepted on 06 Mar 2019 and first published on 06 Mar 2019


Article type: Paper
DOI: 10.1039/C9TC00606K
J. Mater. Chem. C, 2019,7, 4109-4117

  •   Request permissions

    Near-infrared-laser-driven robust glass-ceramic-based upconverted solid-state-lighting

    J. Chen, Y. Peng, X. Li, W. Chen, H. Huang, L. Lin and D. Chen, J. Mater. Chem. C, 2019, 7, 4109
    DOI: 10.1039/C9TC00606K

Search articles by author

Spotlight

Advertisements