Abstract
The lead-free ceramics K0.5Na0.5NbO3: x wt% Er3+ (x = 0, 1, 2, 3 and 4) were produced via solid-state method. The ceramic was sintered at 1100 °C to produce a pure-phase perovskite with an orthorhombic structure. No extra phases in the XRD spectra demonstrate that all the Er3+ ions have dispersed into the host lattice. At room temperature, PL emission spectra were examined under the wavelengths 488 and 980 nm. In both emission spectra, green emission bands (528 and 549 nm) and slightly faint red emission bands (662 nm) were found. Observing the effect of pump power revealed that two photons are involved in the emission process. The time decay profile indicates an average lifetime of Er3+ ions is 25.05 μs. The ferroelectric hysteresis loop at room temperature showed decent shapes with good remnant. Thus, by combining the optical and ferroelectric properties, KNN may have potential applications to be employed in optoelectronic devices.
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Acknowledgements
We thank the Department of Applied Physics, Delhi Technological University, for letting us use research facilities. The authors, MV and SS, would like to extend their sincere appreciation to their supervisor, Dr. RB, for her guidance, patience, and constant encouragement throughout their research work. They also wish to express their gratitude to AB for her valuable contributions to the experiment and manuscript writing, her kindness and friendship, and for creating a positive research environment. Finally, the authors would like to thank their family and friends for their unwavering support, understanding, inspiration, and love.
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Muskan Varshney: Conceptualization, data curation, writing-original draft, made all the measurements, Shreya Soni: Conceptualization, data curation, writing-original draft, made all the measurements, Ankita Banwal: Data curation, writing-editing, Megha Narwan: Data curation, writing-editing, Manoj Verma: XRD analysis, writing-editing, Renuka Bokolia: Supervision, reviewing and editing of the original draft.
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Varshney, M., Soni, S., Banwal, A. et al. Effect of Er3+ ion incorporation on the structural, photoluminescence, and ferroelectric properties of K0.5Na0.5NbO3 ceramic for optoelectronic applications. Appl. Phys. A 130, 267 (2024). https://doi.org/10.1007/s00339-024-07447-1
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DOI: https://doi.org/10.1007/s00339-024-07447-1