Highly efficient and thermally stable MnII-based phosphor-in-glass towards warm WLED. Issue 5 (1st March 2023)

• Record Type: Journal Article
• Authors: Liu, Tianpeng; Li, Xiaoshuang; Zhang, Kang; Deng, Shuwei; Hu, Zhiyu; An, Hongxiang; Wang, Bo; Kong, Youchao
• Is Part Of: Ceramics international. Volume 49:Issue 5(2023)
• Page Start: 7380
• Page End: 7386
• Publication Date: 2023-03-01
• Subjects: Phosphor -- Luminescence -- Glass-ceramic -- LED; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.10.203
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Aluminate with the magnetoplumbite-type (LaZnAl11 O19 ) represents a big family technology important compound. Crystallographic sites for transition metal and rare earth ion in the magnetoplumbite structure have always been a hot topic. Here, manganese-based magnetoplumbite-type La(Zn, Mn)Al11 O19 phosphors were successfully synthesized via the traditional solid-state reaction and all the samples crystallized into the hexagonal structure. A narrow green emission band at approximately 518 nm with quantum efficiency (∼unit one) is demonstrated in LaZnAl11 O19 host with Mn 2+ doping equal 0.3. Temperature dependent photo-luminescence indicate that LaZn0.7 Mn0.3 Al11 O19 sample keep excellent thermal stability. Meanwhile, the thermal ionization process was elaborated in detail. At last, a high-power w-LED with a high color rendering index and low associated color temperature is produced by inserting the microcrystals into the glass host using a "phosphor-in-glass (PiG)" technique. Graphical abstract: Image 1