壓電陶瓷因具有將能量形式互換的壓電性 (Piezoelectricity)，應用的領域相當廣泛。壓電陶瓷厚膜材料兼顧了塊材與薄膜的優點，因此在許多工程應用上扮演非常重要的角色。

本論文研究目的在於針對1~20 μm膜厚的PZT壓電陶瓷膜進行材料的開發，使其具備高品質且穩定的性能，而能在未來應用於製作先進之超音波探頭。首先先就PZT壓電薄膜進行特性的最佳化，以PZT前驅溶液的調配為出發點，逐步探討環境變因、含鉛量、快速退火溫度參數與燒結條件等等製程參數，並探討透過快速退火次數的控制優化薄膜鐵電性能，同時以薄膜特性的確立為基礎製作PZT粉末。後續透過粉末與PZT前驅溶液混合製作PZT壓電陶瓷厚膜，最後引入真空滲透法（Vacuum infiltration method）的概念優化厚膜品質，進而做傳統厚膜製程與真空滲透技術的特性比較。

本研究成功透過快速退火次數的控制製備出約1μm厚的高品質的PZT壓電薄膜（殘留極化值Pr=48.67 μC/cm2，矯頑電場Ec=47.96 kV/cm），同時以真空滲透法讓厚達5 μm的PZT壓電陶瓷厚膜特性大量提升（殘留極化值Pr=37.66 μC/cm2，矯頑電場Ec=87.17 kV/cm）。

Piezo-ceramics have widely applications in many fields due to its piezoelectricity. In many applications of ultrasound engineering, medical acoustic transducers, sensors and actuators, thick piezo-ceramic films play an important role in achieving required engineering performance. This thesis focuses on the development of high-quality PZT thick film by sol-gel method with a thickness around 1 to 20 μm, which can be applied to acoustic transducers in the future.

First of all, this work investigates several important factors such as the environmental conditions, the content of lead, the temperature of rapid thermal annealing (RTA) and the sintering temperature, in preparing PZT precursor for the optimization of PZT thin film. The piezoelectricity of fabricated PZT thin films is optimized by controlling the RTA process times. Secondly, pure PZT powder is dried from the optimized PZT precursor and the PZT slurry is obtained by mixing the pure powder and the optimized precursor. The PZT thick film is then fabricated by the PZT slurry. Finally, the vacuum infiltration method is applied for the optimization of PZT thick films’ qualities.

We have successfully fabricated high-quality PZT thin films and the thickness is around 1 μm by controlling the RTA process times (the remanent polarization is 48.67 μC/cm2, and coercive field is 47.96 kV/cm). The high-quality thick film around 5 μm in thickness is spin-coated five times with PZT slurry and vacuum infiltration method. The material quality of the fabricated PZT thick films is highly improved when compared with traditional PZT thick film (remanent polarization is 37.66 μC/cm2, and coercive field is 87.17 kV/cm).

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