Multifunctional energy storage and photoluminescence of Er-modified KNN-based transparent ferroelectric ceramics

Multifunctional energy storage and photoluminescence of Er-modified KNN-based transparent ferroelectric ceramics

Journal of Materiomics

10.1016/j.jmat.2024.100993

https://doi.org/10.1016/j.jmat.2024.100993

Zhichao Gong, Haojie Yue, Kailing Fang, Kun Guo, Kang Li, Chong Guo, Huacheng Zhang, Ziliang Deng, Zhiyong Liu, Bing Xie, Pu Mao, Jinshan Lu, Shifeng Guo, Kui Yao, Francis Eng Hock Tay

KNN Upconversion photoluminescence Multifunctional ceramics First-principles calculation

14 December 2024

Gong, Z., Yue, H., Fang, K., Guo, K., Li, K., Guo, C., Zhang, H., Deng, Z., Liu, Z., Xie, B., Mao, P., Lu, J., Guo, S., Yao, K., & Tay, F. E. H. (2025). Multifunctional energy storage and photoluminescence of Er-modified KNN-based transparent ferroelectric ceramics. Journal of Materiomics, 11(4), 100993. https://doi.org/10.1016/j.jmat.2024.100993

Against the backdrop of increasing miniaturization and integration of electronic components, the demand for materials with multifunctionality has increased significantly. Among these, transparent fluorescent ferroelectric ceramics exhibiting ferroelectricity, optical transparency, and photoluminescence (PL) have garnered significant attention. However, an interdependent relationship exists in a ferroelectric material among polarization, transparency, and photoluminescence, which presents a challenge for optimizing the coupling of optoelectronic properties. In this work, the doping concentration of Er3þ in 0.825(K0.5Na0.5)NbO3-0.175Sr(Sc0.5Nb0.5)O3: x%Er (x ¼ 0e0.15) system was modulated by first-principle calculations through compositional design and performance-influencing-factor-analysis strategies. The experimental results showed that grain size of the ceramic was reduced to 28 mm at x ¼ 0.05, concentration of vacancy defects in the lattice was low, and band gap value was increased to 3.105 eV. The multifunctional ceramic, while maintaining an excellent recoverable energy storage density (Wrec ¼ 2.03 J/cm3) and energy storage efficiency (h ¼ 75.67%), demonstrated a 56% (1100 nm) good nearinfrared transmittance and upconversion photoluminescence properties at 527, 549 nm, and 667 nm exhibiting weak green, strong green, and weak red light, respectively. This study provides a theoretical foundation and new approach for realizing the multifunctionality of photoelectric couple by introducing rare earth elements as luminescent centers into ferroelectric ceramics.

Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)

This research / project is supported by the A*STAR - Advanced Manufacturing and Engineering (AME) Programmatic Fund
Grant Reference no. : A20G9b0135

https://oar.a-star.edu.sg/communities-collections/articles/22786

2352-8478

Institute of Materials Research and Engineering