Tuning microstructure and optoelectronic performance in AZO/Ag/AZO and AZO/Cu/AZO multilayers: A comparative investigation

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-05-12 DOI:10.1016/j.optmat.2025.117154

Djelloul Mendil , Tahar Touam , Azeddine Chelouche , Atmane Djermoune , Salim Ouhenia , Djamel Djouadi , Fatiha Challali

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引用次数: 0

Abstract

The effects of AZO layer thickness (25–65 nm) and metal type (Ag: 10 nm, Cu: 13 nm) on the microstructural and optoelectronic properties of AZO/Ag/AZO and AZO/Cu/AZO multilayers were investigated. X-ray diffraction (XRD) confirmed improved crystallinity and crystallite size with increasing AZO thickness, with AZO/Ag/AZO showing superior crystal quality. Transmission electron microscopy (TEM) verified uniform thickness and well-defined interfaces. Field emission scanning electron microscopy (FESEM) revealed that surface morphology and grain size were strongly affected by AZO thickness and metal type. Transmittance spectra showed that thicker AZO layers reduced visible transmittance, with AZO/Cu/AZO exhibiting better NIR performance. Photoluminescence (PL) spectra indicated a decrease in emission intensity, a slight UV redshift, and faster decay in AZO/Ag/AZO. Hall-effect measurements demonstrated that AZO thickness and metal type influence optoelectronic performance, with AZO/Ag/AZO achieving the highest figure of merit of 3.66 × 10⁻⁴ Ω⁻¹ at 25 nm AZO thickness, highlighting its optoelectronic potential.

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AZO/Ag/AZO和AZO/Cu/AZO多层膜的微观结构和光电性能比较研究

研究了AZO层厚度（25 ~ 65 nm）和金属类型（Ag: 10 nm, Cu: 13 nm）对AZO/Ag/AZO和AZO/Cu/AZO多层膜显微结构和光电性能的影响。x射线衍射（XRD）证实，随着AZO厚度的增加，结晶度和晶粒尺寸得到改善，AZO/Ag/AZO表现出优异的晶体质量。透射电子显微镜（TEM）验证了均匀的厚度和良好定义的界面。场发射扫描电镜（FESEM）显示，AZO厚度和金属类型对表面形貌和晶粒尺寸有较大影响。透射光谱结果表明，较厚的AZO层降低了其可见光透射率，其中AZO/Cu/AZO具有较好的近红外性能。光致发光（PL）光谱表明，AZO/Ag/AZO的发射强度降低，紫外红移轻微，衰减更快。霍尔效应测量表明，AZO厚度和金属类型影响光电性能，AZO/Ag/AZO在25 nm AZO厚度下达到最高的3.66 × 10−4 Ω−1，突出了其光电潜力。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.