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Controlling microstructure and film growth of relaxor-ferroelectric thin films for high break-down strength and energy-storage performance
Journal of the European Ceramic Society ( IF 5.7 ) Pub Date : 2017-08-24 , DOI: 10.1016/j.jeurceramsoc.2017.08.027
Minh D. Nguyen , Chi T.Q. Nguyen , Hung N. Vu , Guus Rijnders

The relaxor ferroelectric Pb0.9La0.1(Zr0.52Ti0.48)O3 (PLZT) thin films were deposited using pulsed laser deposition, and their microstructures, break-down field strengths and energy storage performances were investigated as a function of the buffer layer and electrode. A large recoverable energy-storage density (Ureco) of 23.2 J/cm3 and high energy-storage efficiency (η) of 91.6% obtained in the epitaxial PLZT film grown on SrRuO3/SrTiO3/Si are much higher than those in the textured PLZT film (Ureco = 21.9 J/cm3, η = 87.8%) on SrRuO3/Ca2Nb3O10-nanosheet/Si and the polycrystalline PLZT film (Ureco = 17.6 J/cm3, η = 82.6%) on Pt/Ti/SiO2/Si, under the same condition of 1500 kV/cm and 1 kHz, due to the slim polarization loop and significant antiferroelectric-like behavior. Owing to the high break-down strength (BDS) of 2500 kV/cm, a giant Ureco value of 40.2 J/cm3 was obtained for the epitaxial PLZT film, in which Ureco values of 28.4 J/cm3 (at BDS of 2000 kV/cm) and 20.2 J/cm3 (at BDS of 1700 kV/cm), respectively, were obtained in the textured and polycrystalline PLZT films. The excellent fatigue-free properties and high thermal stability were also observed in these films.



中文翻译:

控制弛豫铁电薄膜的微结构和膜生长,以实现高击穿强度和储能性能

使用脉冲激光沉积技术沉积弛豫铁电Pb 0.9 La 0.1(Zr 0.52 Ti 0.48)O 3(PLZT)薄膜,并研究了它们的微观结构,击穿场强和能量存储性能随缓冲层和电极。在SrRuO 3 / SrTiO 3 / Si上生长的外延PLZT薄膜上获得的23.2 J / cm 3的大可回收储能密度(U reco)和91.6%的高储能效率(η)远高于储能效率。带纹理的PLZT膜(U reco  = 21.9 J / cm 3 在SrRuO 3 / Ca 2 Nb 3 O 10-纳米片/ Si上,η = 87.8%)和 在Pt / Ti / SiO 2 / Si上的多晶PLZT膜(U reco  = 17.6 J / cm 3η = 82.6%),在1500 kV / cm和1 kHz的相同条件下,归因于纤细的极化环路和明显的反铁电特性。由于2500 kV / cm的高击穿强度(BDS),外延PLZT膜的U reco值为40.2 J / cm 3,其中U reco值为28.4 J / cm 3(在BDS时) 2000 kV / cm)和20.2 J / cm在带纹理的PLZT和多晶PLZT膜中分别获得3(BDS为1700 kV / cm)。在这些膜中还观察到优异的无疲劳性能和高热稳定性。

更新日期:2017-08-24
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