Impact of transition metal doping on the surface characteristics, dielectric properties and optical chromaticity of ZnO nanoparticles

IF 5.6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2026-04-01 Epub Date: 2026-02-03 DOI:10.1016/j.ceramint.2026.02.019

I. Sankeeda , M. Silambarasan , P. Baraneedharan

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Abstract

This study investigates the influence of transition metal doping (Mn, Fe, and Ni) on the structural, dielectric, and optical properties of ZnO nanoparticles synthesized via a solution combustion method. Dopant concentrations ranging from 1 to 10 mM were employed to elucidate dopant-dependent property modulation. X-ray diffraction confirms the formation of wurtzite ZnO with substitutional incorporation of Mn, while secondary phases emerge at higher Fe and Ni concentrations, as corroborated by EDS analysis. FE-SEM and BET results reveal pronounced microstructural variations, with Ni-doped ZnO exhibiting enhanced surface area and mesoporosity due to dopant-induced suppression of grain growth. Dielectric measurements demonstrate frequency-dependent permittivity and loss, governed by space-charge accumulation and Maxwell–Wagner interfacial polarization at grain boundaries. Photoluminescence and chromaticity analyses (CIE 1931/1976) reveal dopant-specific emission tuning: Fe enhances blue emission purity, Mn induces green emission at low concentrations via defect-mediated transitions, and Ni provides moderate spectral modulation with improved lattice stability. These findings establish a strong correlation between dopant-induced structural modifications, defect chemistry, and functional dielectric–optical responses, highlighting TM-doped ZnO nanoparticles as promising candidates for optoelectronic and photonic applications.

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过渡金属掺杂对ZnO纳米粒子表面特性、介电性能和光学色度的影响

本研究考察了过渡金属掺杂（Mn、Fe和Ni）对溶液燃烧法制备的ZnO纳米颗粒结构、介电性能和光学性能的影响。掺杂剂浓度范围为1 ~ 10 mM，以阐明依赖于掺杂剂的性质调制。x射线衍射证实了锰的替代掺入形成了纤锌矿ZnO，而EDS分析证实了在较高的Fe和Ni浓度下出现了二次相。FE-SEM和BET结果显示了明显的微观结构变化，掺杂ni的ZnO由于掺杂抑制晶粒生长而表现出表面积和介孔率的增强。介电测量显示频率相关的介电常数和损耗，由空间电荷积累和麦克斯韦-瓦格纳界面极化在晶界。光致发光和色度分析（CIE 1931/1976）揭示了掺杂物特异性发射调谐：铁提高蓝色发射纯度，锰在低浓度下通过缺陷介导的转变诱导绿色发射，而Ni提供适度的光谱调制，提高了晶格稳定性。这些发现建立了掺杂剂诱导的结构修饰、缺陷化学和功能介电光学响应之间的强相关性，突出了tm掺杂ZnO纳米颗粒在光电和光子应用方面的前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.