Enriching red emission of Y_3Al_5O_12: Ce^3+ by codoping Pr^3+ and Cr^3+ for improving color rendering of white LEDs | Zendy

Lei Wang | Zendy; Xia Zhang | Zendy; Zhendong Hao | Zendy; Yongshi Luo | Zendy; Xiaojun Wang | Zendy; Jiahua Zhang | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Enriching red emission of Y_3Al_5O_12: Ce^3+ by codoping Pr^3+ and Cr^3+ for improving color rendering of white LEDs

Author(s) -

Lei Wang,

Xia Zhang,

Zhendong Hao,

Yongshi Luo,

Xiaojun Wang,

Jiahua Zhang

Publication year - 2010

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.18.025177

Subject(s) - phosphor , photoluminescence , color rendering index , light emitting diode , doping , materials science , luminescence , analytical chemistry (journal) , energy transfer , fluorescence , optoelectronics , optics , white light , chemistry , physics , molecular physics , chromatography

Triply doped Y3Al5O12: Ce3+, Pr3+, Cr3+ phosphors are prepared by solid state reaction. The emission spectra are enriched in the red region with the luminescence of both Pr3+ and Cr3+ through Ce3+ → Cr3+ and Ce3+ → Pr3+ → Cr3+ energy transfers. The properties of photoluminescence and fluorescence decay indicates larger macroscopic Ce3+ → Cr3+ transfer rates in the triply doped phosphors in comparison to Ce3+ and Cr3+ doubly doped one, reflecting the effect of competition between Ce3+ → Cr3+ and Ce3+ → Pr3+ transfers. White LEDs fabricated using the triply doped phosphor coated on blue LED chips show a color rendering index of 81.4 higher than that either using Ce3+ and Cr3+ doubly doped or Ce3+ singly doped phosphor.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research