Simultaneous enhancement of energy storage and luminescent performances in Sr<inline-formula><math display="inline" overflow="scroll" xmlns:mml="http://www.w3.org/1998/Math/MathML"><msub><mrow></mrow><mrow><mn>2</mn><mo>−</mo><mi>x</mi></mrow></msub></math></inline-formula>SmxAg<inline-formula><math display="inline" overflow="scroll" xmlns:mml="http://www.w3.org/1998/Math/MathML"><msub><mrow></mrow><mrow><mn>0</mn><mo>.</mo><mn>2</mn></mrow></msub></math></inline-formula>Na<inline-formula><math display="inline" overflow="scroll" xmlns:mml="http://www.w3.org/1998/Math/MathML"><msub><mrow></mrow><mrow><mn>0</mn><mo>.</mo><mn>8</mn></mrow></msub></math></inline-formula>Nb<inline-formula><math display="inline" overflow="scroll" xmlns:mml="http://www.w3.org/1998/Math/MathML"><msub><mrow></mrow><mrow><mn>5</mn><mo>−</mo><mi>x</mi></mrow></msub></math></inline-formula>ZrxO<inline-formula><math display="inline" overflow="scroll" xmlns:mml="http://www.w3.org/1998/Math/MathML"><msub><mrow></mrow><mrow><mn>1</mn><mn>5</mn></mrow></msub></math></inline-formula> multifunctional ceramics

Yan Wang; Suwan Li; Yihan Tong; Zhiwei Feng; Xiaolian Chao; Zupei Yang; Pengfei Liang; Jiangbo Lu; Lingling Wei

doi:10.1142/S2010135X24500310

Journal of Advanced Dielectrics, Volume. 15, Issue 3, 2450031(2025)

Simultaneous enhancement of energy storage and luminescent performances in Sr $_{2 - x}$ Sm_xAg $_{0.2}$ Na $_{0.8}$ Nb $_{5 - x}$ Zr_xO $_{15}$ multifunctional ceramics

Yan Wang¹, Suwan Li¹, Yihan Tong¹, Zhiwei Feng¹, Xiaolian Chao², Zupei Yang², Pengfei Liang³, Jiangbo Lu^3、*, and Lingling Wei^1、**

Author Affiliations

¹Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, Shaanxi, P. R. China

²School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, Shaanxi, P. R. China

³School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062, Shaanxi, P. R. China

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Rare earth-doped ferroelectric (FE) ceramics have attracted much attention due to their great potential application for novel multifunctional optical-electro devices. This study successfully devised and fabricated tungsten bronze Sr $_{2 ? x}$ Sm_xAg $_{0.2}$ Na $_{0.8}$ Nb $_{5 ? x}$ Zr_xO $_{15}$ ceramics, demonstrating exceptional energy storage and luminescent properties suitable for multifunctional capacitors. Effects of co-doping Sm $^{3 +}$ and Zr $^{4 +}$ in A and B sites on the phases structure, FE, energy storage and photoluminescence properties of Sr $_{2 ? x}$ Sm_xAg $_{0.2}$ Na $_{0.8}$ Nb $_{5 ? x}$ Zr_xO $_{15}$ ceramics were systematically investigated. Through employing various collaborative optimization strategies, encompassing the refinement of ceramic grains, the induction of nanodomain generation and the incorporation of large bandgap components, enhancement of breakdown strength and regulation of constructing relaxor FEs were achieved. Encouragingly, the high-performance multifunctional materials with remarkable recoverable energy storage metrics ( $W_{rec} ～$ 3.72J/cm³, $η ～$ 82.7%), brilliant red-orange light emission and distinguished frequency and temperature stabilities within specific ranges were obtained in Sr $_{1.7}$ Sm $_{0.3}$ Ag $_{0.2}$ Na $_{0.8}$ Nb $_{4.7}$ Zr $_{0.3}$ O $_{15}$ ceramics. Besides, the multifunctional ceramics demonstrated a high-power density (68.1MW/cm $^{3})$ , a substantial current density (908.1A/cm $^{2})$ and a fast discharge time (51ns) at 190kV/cm. These findings suggest that the designed Sr $_{2 ? x}$ Sm_xAg $_{0.2}$ Na $_{0.8}$ Nb $_{5 ? x}$ Zr_xO $_{15}$ ceramics hold promise as candidate materials for dielectric capacitors.

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Yan Wang, Suwan Li, Yihan Tong, Zhiwei Feng, Xiaolian Chao, Zupei Yang, Pengfei Liang, Jiangbo Lu, Lingling Wei. Simultaneous enhancement of energy storage and luminescent performances in Sr $_{2 - x}$ Sm_xAg $_{0.2}$ Na $_{0.8}$ Nb $_{5 - x}$ Zr_xO $_{15}$ multifunctional ceramics[J]. Journal of Advanced Dielectrics, 2025, 15(3): 2450031