A crystal defect led zero thermal quenching β-NaYF4 : Eu3+, Dy3+ red emitting phosphor. Issue 47 (27th October 2022)

• Record Type: Journal Article
• Authors: Ling, Shaokun; Chen, Chang; Meng, Kai; Yan, Yifeng; Ming, Junyun; Liao, Sen; Huang, Yingheng
• Is Part Of: RSC advances. Volume 12:Issue 47(2022)
• Page Start: 30803
• Page End: 30816
• Publication Date: 2022-10-27
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra05674g
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : VY vacancies make a predominant contribution to the zero thermal quenching property of β-NaYF4 : 0.065Eu 3+, 0.003Dy 3+ . Abstract : Red-light phosphors with extraordinary and stable thermal luminous properties must urgently be explored under the circumstances that commercial phosphors are suffering from serious thermal quenching effects and a lack of red-light components. Synthesized by a one-step hydrothermal method, a new type of NaYF4 : 0.065Eu 3+, 0.003Dy 3+ phosphor with notable thermal luminous stability is reported in this study. As well as energy transfer between Dy 3+ and Eu 3+, this novel red-light phosphor manifests zero thermal quenching (ZTQ) performance under an increasing temperature of measurement. The ZTQ property stems from the interior defects of the crystal produced by the non-equivalence replacement between distinct ions. Density Functional Theory (DFT) calculations were utilized to verify the formation energy of two kinds of defects that make a vital contribution to the ZTQ performance of the NaYF4 : 0.065Eu 3+, 0.003Dy 3+ phosphor. This finding could make some contributions towards research into improving thermal luminous properties and stability.