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DOI	10.1126/science.abb0631
	Ultrahigh capacitive energy density in ion-bombarded relaxor ferroelectric films
	Kim J.; Saremi S.; Acharya M.; Velarde G.; Parsonnet E.; Donahue P.; Qualls A.; Garcia D.; Martin L.W.
发表日期	2020
ISSN	10959203
起始页码	81
结束页码	84
卷号	369 期号:6499
英文摘要	Dielectric capacitors can store and release electric energy at ultrafast rates and are extensively studied for applications in electronics and electric power systems. Among various candidates, thin films based on relaxor ferroelectrics, a special kind of ferroelectric with nanometer-sized domains, have attracted special attention because of their high energy densities and efficiencies. We show that high-energy ion bombardment improves the energy storage performance of relaxor ferroelectric thin films. Intrinsic point defects created by ion bombardment reduce leakage, delay low-field polarization saturation, enhance high-field polarizability, and improve breakdown strength. We demonstrate energy storage densities as high as ~133 joules per cubic centimeter with efficiencies exceeding 75%. Deterministic control of defects by means of postsynthesis processing methods such as ion bombardment can be used to overcome the trade-off between high polarizability and breakdown strength. Copyright © 2020, American Association for the Advancement of Science.
关键词	article polarization
语种	英语
来源机构	Science (New York, N.Y.)
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133383
推荐引用方式 GB/T 7714	Kim J.,Saremi S.,Acharya M.,et al. Ultrahigh capacitive energy density in ion-bombarded relaxor ferroelectric films[J]. Science (New York, N.Y.),2020,369(6499).
APA	Kim J..,Saremi S..,Acharya M..,Velarde G..,Parsonnet E..,...&Martin L.W..(2020).Ultrahigh capacitive energy density in ion-bombarded relaxor ferroelectric films.,369(6499).
MLA	Kim J.,et al."Ultrahigh capacitive energy density in ion-bombarded relaxor ferroelectric films".369.6499(2020).