Influence of charge compensation on the photoluminescence and temperature sensing of zinc titanate composites. Issue 8 (15th April 2023)

• Record Type: Journal Article
• Authors: Hu, Fengya; Wu, Yongjin; Sun, Chengmei; Xu, Chengcheng; Zhu, Bingjun; Wang, Qingru; Shi, Qiang; Li, Shuhong; Zhang, Dong
• Is Part Of: Ceramics international. Volume 49:Issue 8(2023)
• Page Start: 11779
• Page End: 11787
• Publication Date: 2023-04-15
• Subjects: Zinc titanate -- Charge compensation -- Optical thermometry -- Luminescence enhancement; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.12.022
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Eu 3+ activated zinc titanate red-emitting phosphors have been synthesized by a solid state reaction, and Li + is added as the charge compensator to tune the optical performances of the phosphors. The structure of samples synthesized at different temperature reveals temperature dependence. The crystallization of particles is improved with increasing calcination temperature. The surface morphology and element distribution of the samples are observed by scanning electron microscope (SEM) and energy dispersive X-ray spectrometer (EDS). Various elements are evenly distributed in the matrix materials. The luminescence intensity of Eu 3+ is effectively improved by co-doping Li +, and the luminescence intensity of the phosphor with Li + content of 5 mol% and 7 mol% is twice than that of the phosphor without Li + when the annealing temperature is 600 °C. While the influence of Li + on the photoluminescence performance becomes weaker with the annealing temperature increasing. The highest relative sensitivity of 0.65%/K is obtained in the sample annealed at 1000 °C, which is not affected by the Li + dopants.