Simultaneously achieved high energy storage density and efficiency in sol–gel derived BZT thin films integrated on Si

IF 5.8 2区化学 Q1 POLYMER SCIENCE

European Polymer Journal Pub Date : 2025-03-06 DOI:10.1016/j.eurpolymj.2025.113886

Zengcai Zhao , Qiaolan Fan , Shengqiang Wu , Nengqin Tao , Yangxin Zhou

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引用次数: 0

Abstract

Among various dielectrics, ferroelectric thin films for capacitors have attracted considerable attention due to the excellent energy storage properties. In this work, the multilayered BaZr_0.35Ti_0.65O₃ (BZT) ferroelectric films were fabricated on p-type silicon substrates via a sol–gel/spin-coating processing. The microstructure and phase composition of BZT multilayer films were evaluated at variable thickness induced by different number of deposits, and their effects on breakdown strength as well as energy storage performance have been systematically investigated. The results show that BZT thin film coated at a single layer ∼ 40 nm crystallized into a dense nanocrystalline structure of the pyrochlore phase, leading to the lowered leakage current and reduced polarization switching hysteresis, while exhibiting a large energy storage density of 80.4 J/cm³ and high energy efficiency of ∼ 90 % simultaneously due to the ultrahigh breakdown strength of 7.75 MV/cm. This work provides a scalable approach towards high-performance eco-friendly ferroelectric film capacitors integrated on silicon.

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来源期刊

European Polymer Journal 化学-高分子科学

CiteScore

9.90

自引率

10.00%

发文量

691

审稿时长

23 days

期刊介绍： European Polymer Journal is dedicated to publishing work on fundamental and applied polymer chemistry and macromolecular materials. The journal covers all aspects of polymer synthesis, including polymerization mechanisms and chemical functional transformations, with a focus on novel polymers and the relationships between molecular structure and polymer properties. In addition, we welcome submissions on bio-based or renewable polymers, stimuli-responsive systems and polymer bio-hybrids. European Polymer Journal also publishes research on the biomedical application of polymers, including drug delivery and regenerative medicine. The main scope is covered but not limited to the following core research areas: Polymer synthesis and functionalization • Novel synthetic routes for polymerization, functional modification, controlled/living polymerization and precision polymers. Stimuli-responsive polymers • Including shape memory and self-healing polymers. Supramolecular polymers and self-assembly • Molecular recognition and higher order polymer structures. Renewable and sustainable polymers • Bio-based, biodegradable and anti-microbial polymers and polymeric bio-nanocomposites. Polymers at interfaces and surfaces • Chemistry and engineering of surfaces with biological relevance, including patterning, antifouling polymers and polymers for membrane applications. Biomedical applications and nanomedicine • Polymers for regenerative medicine, drug delivery molecular release and gene therapy The scope of European Polymer Journal no longer includes Polymer Physics.