A single-phase white-emitting La(BO3, PO4):Dy3+ phosphor with high thermostability. Issue 4 (15th February 2023)

• Record Type: Journal Article
• Authors: Song, Ruitong; Zhang, Zhuohui; Li, Hong; Luo, Zhenyu; Yang, Jinyan; Ma, Jie; Xiang, Xianfeng; Zeng, Qing; Zhu, Jing
• Is Part Of: Ceramics international. Volume 49:Issue 4(2023)
• Page Start: 6965
• Page End: 6973
• Publication Date: 2023-02-15
• Subjects: Borophosphate -- Photoluminescence -- Dysprosium -- Thermal stability -- White-emitting; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.10.075
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Developing single-phase white-emitting phosphor has increasingly become an effective strategy to solve the emerging challenges of multiple phosphors-converted white light-emitting diodes such as unavoidable reabsorption, high production cost, and low thermostability. In this work, a single-phase white-emitting La(BO3, PO4 ):Dy 3+ phosphor was synthesized. The photoluminescence performance characterizes the two strong visible emissions of Dy 3+ : blue (470–500 nm, 4 F9/2 → 6 H15/2 ) and yellow lights (570–600 nm, 4 F9/2 → 6 H13/2 ). The content quenching of Dy 3+ presents at x = 0.03 mol, which is controlled by the dipole–dipole interaction. The optimized product La0.97 Dy0.03 (BO3, PO4 ) has a high thermostability. It has also the comparable color coordinates with the ideal white light due to the proper yellow-blue intensity ratio. The above studies confirm that the Dy 3+ -activated La(BO3, PO4 ) phosphor could be a prospective white-emitting candidate in lighting application.