Study on luminescence characterizations of SrMg2La2W2O12:Eu3+ red-emitting phosphor

• Published in: The Journal of physics and chemistry of solids 2022-04, Vol.163, p.110569, Article 110569
• Main Authors: Cao, Renping, Liang, Huang, Chen, Ting, Wu, Zengyang, Jiang, Zhuyang, Yi, Xuehua, Wen, Jianping, Zhong, Qinghu
• Format: Article
• Language: English
• Subjects: Eu3+ ions; Luminescence properties; Phosphors; SrMg2La2W2O12
• ISSN: 0022-3697; 1879-2553
• DOI: 10.1016/j.jpcs.2021.110569

SrMg2La2W2O12:Eu3+ (SMLWO:Eu3+) phosphors are successfully synthesized via the high temperature solid-state method in air. We study the crystal structure and luminescence properties (e.g. the excitation and emission spectra, the concentration dependent spectra, and fluorescent lifetimes) of the samples. SMLWO:Eu3+ phosphor with excitation at 324, 396, and 466 nm emits red light due to the 5D0 → 7F0, 7F1, 7F2, 7F3, 7F4, and 7F5 transitions of Eu3+ ion. We investigate the influence of excitation wavelength and Eu3+ concentration on the luminescence properties of the samples. We confirm the optimal Eu3+ concentration (∼8 mol%) in SMLWO:Eu3+ phosphor via the concentration dependent emission spectra of samples, and explain the luminous mechanism of SMLWO:Eu3+ phosphor by using the energy level diagram and energy transfer of Eu3+ ion. •SrMg2La2W2O12:Eu3+ are successfully synthesized via the high temperature solid-state method in air.•SrMg2La2W2O12:Eu3+ phosphor with excitation at 324, 396, and 466 nm emits red light.•The luminescence properties of the samples can be affected by the excitation wavelength.•The optimal Eu3+ concentration is ∼8 mol% in SMLWO:Eu3+ phosphor.