Preparation and Opto-Electric Properties of Lead-Free 0.96KNNTSx-0.04BNKZ Transparent Piezoelectric Ceramics
In this study,0.96(K0.48Na0.52)(Nb0.95-xTa0.05Sbv)O3-0.04Bi0.5(Na0.82K0.18)0.5ZrO3(0.96KNNTSx-0.04BNKZ,x=0.03,0.04,0.06,0.07)lead-free transparent piezoelectric ceramics were prepared,and the effects of Sb doping levels on their piezoelectric properties and optical transparency were examined.All samples exhibit a perovskite structure.With increasing Sb content,both piezoelectric performance and transparency improve.Notably,at x=0.04,the piezoelectric coefficient reaches 240 pC/N,with an optical transmittance of 31.5％at 780 nm.This study demonstrates that compositional design can achieve enhanced transparency and high piezoelectric performance in KNN-based lead-free ceramics,offering significant potential for applications in optoacoustic imaging and transparent transducers.
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