Atmospheric Pressure Chemical Vapor Deposition Grown One-Dimensional ZnO Nanostructures

IF 0.9 4区 物理与天体物理 Q4 PHYSICS, CONDENSED MATTER Physics of the Solid State Pub Date : 2024-09-04 DOI:10.1134/S1063783424600742
Zahra Mohammed Saeed, Yasir Hussein Mohammed, Samir Mahmmod Ahmad
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Abstract

One-dimensional (1D) zinc oxide (ZnO) nanostructures (NSs) as nanowires (NWs) and columnar nanoflakes (NFs) were prepared by atmospheric pressure chemical vapor deposition (APCVD) system. The effect of different thermal treatment times (0, 1, 2, and 3 h) on the physical properties of the grown ZnO NWs was methodically investigated. Further, the surface morphology of such 1D ZnO NSs was studied under different substrates (glass and silicon (Si)). The samples revealed that the synthesized ZnO NWs strongly depended on the thermal treatment time. Prepared samples were well characterized using ultraviolet visible (UV-Vis) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), and energy-dispersive X-ray (EDX) spectroscopy. The optical band gap (Eg) widened from 3.2 to 3.3 eV as the thermal treatment time increased and the transmittance of the NWs improved to approximately 75%, accompanied by a blue-shift at the UV absorption edge. FTIR results disclosed that ZnO absorption bands in the region between 445.5 and 478.3 cm–1 have appeared from interatomic vibrations owing to the stretching of the Zn–O bond. XRD findings of the studied samples disclosed the polycrystalline hexagonal wurtzite structure with preferred orientation along the c-axis. According to the FESEM images, the morphological transition of the hierarchical ZnO NWs to individual NWs architectures was accomplished by increasing the treatment time from 0 to 3 h. Also, FESEM images indicated that the substrate type played a crucial role in determining the morphologies of 1D ZnO NSs. EDX outcomes showed a little Zn deficiency in the prepared samples with slightly different stoichiometric ratios between Zn and O atoms. Our current work could form the foundation for fabricating future nano-optoelectronic devices.

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常压化学气相沉积生长的一维氧化锌纳米结构
摘要 通过常压化学气相沉积(APCVD)系统制备了纳米线(NWs)和柱状纳米片(NFs)的一维(1D)氧化锌(ZnO)纳米结构(NSs)。研究人员采用方法研究了不同热处理时间(0、1、2 和 3 h)对所制备 ZnO NW 物理性质的影响。此外,还研究了在不同基底(玻璃和硅 (Si))下这种一维 ZnO NSs 的表面形貌。样品显示,合成的 ZnO NWs 与热处理时间密切相关。利用紫外可见光谱(UV-Vis)、傅立叶变换红外光谱(FTIR)、X 射线衍射(XRD)、场发射扫描电子显微镜(FESEM)和能量色散 X 射线光谱(EDX)对制备的样品进行了表征。随着热处理时间的延长,光带隙(Eg)从 3.2 eV 扩大到 3.3 eV,氮氧化物的透射率提高到约 75%,同时紫外吸收边缘出现蓝移。傅立叶变换红外光谱结果显示,445.5 至 478.3 cm-1 区域的氧化锌吸收带是由于 Zn-O 键的伸展而产生的原子间振动。研究样品的 XRD 结果显示其为多晶六方菱面体结构,沿 c 轴优先取向。此外,FESEM 图像还表明,衬底类型在决定一维 ZnO NSs 的形态方面起着至关重要的作用。EDX 结果表明,制备的样品中存在轻微的锌缺乏,锌原子和 O 原子的化学计量比略有不同。我们目前的工作可为制造未来的纳米光电器件奠定基础。
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来源期刊
Physics of the Solid State
Physics of the Solid State 物理-物理:凝聚态物理
CiteScore
1.70
自引率
0.00%
发文量
60
审稿时长
2-4 weeks
期刊介绍: Presents the latest results from Russia’s leading researchers in condensed matter physics at the Russian Academy of Sciences and other prestigious institutions. Covers all areas of solid state physics including solid state optics, solid state acoustics, electronic and vibrational spectra, phase transitions, ferroelectricity, magnetism, and superconductivity. Also presents review papers on the most important problems in solid state physics.
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