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Enhancement of energy storage and luminescent performances in tungsten bronze multifunctional ceramics.
- Source :
-
Ceramics International . May2024:Part A, Vol. 50 Issue 9, p14223-14231. 9p. - Publication Year :
- 2024
-
Abstract
- This paper presents the synthesis of multifunctional ceramics, represented as Sr 2- x Sm x Ag 0.2 Na 0.8 Nb 5- x Ti x O 15 , through the solid-state reaction method. Smaller ions in both A and B sites were co-substituted, resulting in a notable relaxation behavior, which was analyzed to determine the contributing factors for underlying structural mechanisms. Introducing Sm3+ and Ti4+ not only transformed the structure from Im 2 a to Bbm 2 symmetry and then eventually to paraelectric P 4/ mbm phase, but also induced the evolution of incommensurate structure and the formation of nano-domains to modulate relaxation behavior. Notably, the enhanced energy storage properties (W rec ∼ 3.38 J/cm3, η ∼ 84.5 %) and desirable red-orange emission performance (λ em = 610 nm) were obtained for Sr 1.7 Sm 0.3 Ag 0.2 Na 0.8 Nb 4.7 Ti 0.3 O 15 ceramics. Moreover, the multifunctional ceramics exhibited high power and current densities (P D ∼ 116.38 MW/cm3, C D ∼ 1026.43 A/cm2) together with a prolonged decay life (745 μs). Therefore, the proposed materials may be suitable for potential applications in optoelectronic devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 50
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 176197361
- Full Text :
- https://doi.org/10.1016/j.ceramint.2024.01.329