Swift Heavy Ion Irradiation-Induced Structural and Piezoelectric Modulation in Mn-filled PVDF–BST Flexible Nanogenerators

IF 2.8 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electronic Materials Pub Date : 2026-08-15 DOI:10.1007/s11664-026-13109-0

Shalu Peter, Divya Chauhan, Sabatini Tyagi, Sanjay Kumar Kedia, Asokan Kandasami, Manish Kumar Srivastava

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引用次数: 0

Abstract

Nanocomposites of poly(vinylidene fluoride) (PVDF) and Mn-filled Ba_1−xSr_xTiO₃ (BST-Mn) thin films were fabricated and investigated before and after swift heavy ion (SHI) irradiation to understand their structural and piezoelectric nanogenerator performance. These films were deposited by the solution-casting method. The combined effects of Mn and SHI irradiation of 80 MeV O ions on the structural, morphological, optical, dielectric, and piezoelectric properties of PVDF–BST were systematically investigated. Structural analysis confirms the coexistence of α, β, and γ phases of PVDF, with an enhanced β-phase fraction induced by both doping and irradiation. Surface morphologies reveal a homogeneous dispersion of BST-Mn fillers within the PVDF matrix, contributing to the increased β-phase content. Optical spectroscopy results further corroborate the α-to-β phase transition, showing that moderate irradiation fluence promotes polar phase formation, whereas higher fluence induces disorder in the crystal structure. The photoluminescence (PL) spectrum exhibits a characteristic Mn-related emission peak at 575 nm, with enhanced intensity at moderate irradiation fluence, followed by quenching at higher fluence levels. Notably, the fabricated piezoelectric nanogenerators (PENGs) demonstrate significant output performance. The 2% Mn-filled BST delivers an output voltage (V_p–p) of 1.5 V and a peak power density of 160.3 µW/cm³ at a fluence of 5 × 10¹² ions/cm². These findings highlight the synergistic effect of Mn filler and SHI irradiation as effective strategies for tailoring PVDF-based nanocomposites for advanced piezoelectric and energy storage applications.

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锰填充PVDF-BST柔性纳米发电机的快速重离子辐照诱导结构和压电调制

制备了聚偏氟乙烯（PVDF）和mn填充Ba1−xSrxTiO3 （BST-Mn）薄膜的纳米复合材料，并对其在快速重离子（SHI）辐照前后的结构和压电纳米发电机性能进行了研究。这些薄膜是用溶液浇铸法沉积的。系统研究了80 MeV O离子Mn和SHI辐照对PVDF-BST结构、形貌、光学、介电和压电性能的联合影响。结构分析证实了PVDF的α、β和γ相共存，掺杂和辐照均能增强其β相分数。表面形貌显示BST-Mn填料在PVDF基体内均匀分散，导致β相含量增加。光谱学结果进一步证实了α -β相变，表明中等辐照通量促进极性相的形成，而高辐照通量则导致晶体结构紊乱。光致发光（PL）光谱在575 nm处表现出一个与mn相关的特征性发射峰，在中等辐照强度下强度增强，在较高辐照强度下猝灭。值得注意的是，所制备的压电纳米发电机（PENGs）具有显著的输出性能。在5 × 1012离子/cm2的影响下，2% mn填充BST的输出电压（Vp-p）为1.5 V，峰值功率密度为160.3 μ W/cm3。这些发现强调了Mn填料和SHI辐照的协同效应是定制pvdf基纳米复合材料的有效策略，用于先进的压电和储能应用。

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来源期刊

Journal of Electronic Materials 工程技术-材料科学：综合

CiteScore

4.10

自引率

4.80%

发文量

693

审稿时长

3.8 months

期刊介绍： The Journal of Electronic Materials (JEM) reports monthly on the science and technology of electronic materials, while examining new applications for semiconductors, magnetic alloys, dielectrics, nanoscale materials, and photonic materials. The journal welcomes articles on methods for preparing and evaluating the chemical, physical, electronic, and optical properties of these materials. Specific areas of interest are materials for state-of-the-art transistors, nanotechnology, electronic packaging, detectors, emitters, metallization, superconductivity, and energy applications. Review papers on current topics enable individuals in the field of electronics to keep abreast of activities in areas peripheral to their own. JEM also selects papers from conferences such as the Electronic Materials Conference, the U.S. Workshop on the Physics and Chemistry of II-VI Materials, and the International Conference on Thermoelectrics. It benefits both specialists and non-specialists in the electronic materials field. A journal of The Minerals, Metals & Materials Society.