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IF 1.5 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Brazilian Journal of Physics Pub Date : 2025-04-09 DOI:10.1007/s13538-025-01765-2

Kilari Naveen Kumar, Nithya G., Ashok Reddy G. V., Sheik Abdul Sattar, Sthuthi A., Dhanalakshmi Radhalayam, M. Anantha Sunil, P. Rosaiah, Nunna Guru Prakash, Musarat Amina, Tae Jo Ko

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引用次数: 0

摘要

采用直流磁控溅射（DCMS）技术在康宁玻璃（CG）和掺氟氧化锡（FTO）基底上沉积氧化钨（WO3）薄膜。利用各种分析技术，包括 X 射线衍射 (XRD)、扫描电子显微镜 (SEM)、能量色散光谱 (EDX)、紫外可见光 (Uv-Vis) 光谱和循环伏安法 (CV)，探讨了厚度变化对薄膜结构、表面形貌、光学特性和电致变色 (EC) 特性的影响。扫描电子显微镜分析表明，WO3- 4 薄膜的厚度约为 500 纳米。薄膜表面光滑，小空隙和晶粒团分布均匀。XRD 分析证实了 WO3 薄膜的无定形性质。使用紫外-可见-近红外光谱评估了 WO3 薄膜的光学特性。不同厚度的薄膜在漂白态和着色态之间显示出不同的透射率变化。WO3- 2 薄膜的透射率调制最高，在 600 纳米波长处达到 81%。WO3- 1 的扩散系数最低（8.97 × 10-9 cm2/C），其着色效率 (CE) 也为 22 cm2。WO3- 2、WO3- 3 和 WO3- 4 的 CE 值分别为 38 cm2/C、40 cm2/C 和 16 cm2/C。这项研究强调了薄膜厚度对色彩效率的重要影响，而色彩效率是电致变色（EC）应用中的一个关键因素。

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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An Impact of Thickness on Structural, Optical, and Electrochromic Properties of WO3 Films Deposited by Sputtering for Smart Window Applications

DC magnetron sputtering (DCMS) was employed to deposit tungsten oxide (WO₃) films on corning glass (CG) and fluorine-doped tin oxide (FTO) substrates. The influence of thickness variations on the film structure, surface morphology, optical properties, and electrochromic (EC) characteristics was explored using various analytical techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDX), ultraviolet–visible (Uv–Vis) spectroscopy, and cyclic voltammetry (CV). SEM analysis revealed that the thickness of the WO₃- 4 film was around 500 nm. The films exhibited smooth surfaces with uniform distributions of small voids and grain clusters. XRD analysis confirmed the amorphous nature of the WO3 thin films. The optical properties of the WO₃ films were evaluated using ultraviolet–visible-near-infrared spectroscopy. Films of varying thicknesses displayed different transmittance modulations between the bleached and colored states. The WO₃- 2 films exhibited the highest transmittance modulation, reaching 81% at 600 nm. The lowest diffusion coefficient (8.97 × 10⁻⁹ cm²/C) was observed in WO₃- 1, which also exhibited a coloring efficiency (CE) of 22 cm². The CE values for WO₃- 2, WO₃- 3, and WO₃- 4 were 38 cm²/C, 40 cm²/C, and 16 cm²/C, respectively. This study highlighted the significant impact of film thickness on color efficiency, which is a crucial factor in electrochromic (EC) applications.

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来源期刊

Brazilian Journal of Physics 物理-物理：综合

CiteScore

2.50

自引率

6.20%

发文量

189

审稿时长

6.0 months

期刊介绍： The Brazilian Journal of Physics is a peer-reviewed international journal published by the Brazilian Physical Society (SBF). The journal publishes new and original research results from all areas of physics, obtained in Brazil and from anywhere else in the world. Contents include theoretical, practical and experimental papers as well as high-quality review papers. Submissions should follow the generally accepted structure for journal articles with basic elements: title, abstract, introduction, results, conclusions, and references.