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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Phase Structure Tuned Electrocaloric Effect and Pyroelectric Energy Harvesting Performance of (Pb0.97La0.02)(Zr,Sn,Ti)O-3 Antiferroelectric Thick Films
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Phase Structure Tuned Electrocaloric Effect and Pyroelectric Energy Harvesting Performance of (Pb0.97La0.02)(Zr,Sn,Ti)O-3 Antiferroelectric Thick Films

机译：（Pb0.97La0.02）（Zr，Sn，Ti）O-3反铁电厚膜的相结构调整电热效应和热电能量收集性能

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摘要

In the present work, (100)-oriented (PB0.97La0.02)(Zr0.95-xSnxTi0.05)O-3 antiferroelectric thick films with x = 0.08, 0.20, and 0.38 were successfully fabricated. These compositions are located in the orthorhombic phase region, the morphotropic phase boundary (MPB), and the tetragonal phase region, respectively. The effects of their phase structure on the electrocaloric effect and the pyroelectric energy harvesting behavior were investigated. A considerable temperature reduction of Delta T = 13, 33, and 27 degrees C, due to the ferroelectric antiferroelectric phase transition, was obtained at 25 degrees C in these thick films for x = 0.08, 0.20, and 0.38, respectively. Moreover, a huge harvested energy density per cycle of W = 3.6, 6.8, and 4.0 J/cm(3) was also realized under the experimental condition in the thick films with x = 0.08, 0.20, and 0.38, respectively. These results indicated that both the cooling performance and the pyroelectric energy harvesting in antiferroelectrics could be optimized by the proper phase structure control.
机译：在目前的工作中，成功地制造了x = 0.08、0.20和0.38的（100）取向（PB0.97La0.02）（Zr0.95-xSnxTi0.05）O-3反铁电厚膜。这些成分分别位于正交相区域，同相相边界（MPB）和四方相区域中。研究了它们的相结构对电热效应和热电能量收集行为的影响。由于这些铁电反铁电相变，在25摄氏度下，由于x = 0.08、0.20和0.38，在铁电反铁电相变的作用下，Delta T = 13、33和27℃的温度明显降低。此外，在x = 0.08、0.20和0.38的厚膜的实验条件下，每个循环的W = 3.6、6.8和4.0 J / cm（3）的巨大收获能量密度也得以实现。这些结果表明，通过适当的相结构控制，可以优化反铁电材料的冷却性能和热电能量的收集。

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