Tunable luminescent Eu2+-doped dicalcium silicate polymorphs regulated by crystal engineering

Zhiyong Mao, Zhijuan Lu, Jingjing Chen, Bradley D. Fahlman, Dajian Wang

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

In this work, tunable luminescence of dicalcium silicate doped with Eu2+ ions is demonstrated based on crystal engineering. Five types of dicalcium silicate polymorphs (γ-, β-, αL′-, αH′-, α-Ca2SiO4) are synthesized by incorporating a crystal-phase stabilizer (CPS), in order to afford variable accommodation frameworks for the Eu2+ activator. Tunable luminescence is observed as the polymorph transforms from one crystal form into another. In addition, the luminescence of Eu2+ in peculiar crystal-phase Ca2SiO4 hosts is further customized by crystal-site engineering, which regulates the coordination environment of Eu2+ in multiple types of Ca2+ sites. The luminescence properties of our Eu2+-doped dicalcium silicate polymorphs show promising prospects for LED lighting applications.

Original languageEnglish
Pages (from-to)9454-9460
Number of pages7
JournalJournal of Materials Chemistry C
Volume3
Issue number36
DOIs
StatePublished - Aug 19 2015

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