Thin Solid Films最新文献_第5页

11.6 % Efficient textured InP solar cell with Nb2O5: A cutting-edge electron transport layer innovation

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films

Pub Date : 2025-01-01 DOI: 10.1016/j.tsf.2024.140577

Mukaddar Sk , Gourav , K. Ramachandran

Enhancing the efficiency of solar cells depends on minimizing reflection losses to boost photon absorption. In this study, we investigated the chemical etching process of pristine InP(100), (named as pris-InP(100)). Our findings demonstrate that the etching process resulted in a self-organizing V-groove microstructure, as revealed by atomic force microscopy and scanning electron microscopy. This induced V-groove microstructure resulted a significant reduction in the reflection loss. Through temporal variation in the etching process, we identified that a 5-minute etch (named as etch5-InP(100)), yielded the lowest reflectance. Additionally, radiofrequency (RF) magnetron sputtering was employed to deposit a 10 nm Nb₂O₅ thin film on both pris-InP (100) and etch5-InP (100) samples. The results indicated that the thin film on etch5-InP(100) exhibited significantly lower reflectance compared to pris-InP(100). Moreover, ab-initio calculations verified the stability and presence of native oxide at the interface of the Nb₂O₅/InP(100) heterostructure. Furthermore, dark current-voltage (I-V) characteristics indicated typical diode behaviour for both Nb₂O₅ thin films deposited on pris-InP(100) and etch5-InP(100). Notably, light I-V measurements revealed that the Nb₂O₅ thin film on etch5-InP(100) achieved a higher efficiency of 11.6 % compared to the 8.7 % efficiency of pris-InP(100). This study provides valuable insights and guidelines for the development of high-efficiency InP-based solar cells.

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引用次数: 0

Effect of substrate temperature on the performance of Sb2Se3 thin film solar cells fabricated by chemical-molecular beam deposition method 衬底温度对化学分子束沉积法制造的 Sb2Se3 薄膜太阳能电池性能的影响

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films

Pub Date : 2024-11-15 DOI: 10.1016/j.tsf.2024.140565

T.M. Razykov , Lukas Schmidt-Mende , K.M. Kouchkarov , R.R. Khurramov , B.A. Ergashev , М. Makhmudov , D.Z. Isakov , M. Primmatov , R.T. Yuldoshov , Sh.B. Utamuradova

Antimony triselenide (Sb₂Se₃) stands as a promising candidate for photovoltaic (PV) applications due to its favorable material- and optoelectronic properties. However, the realization of further advancements in device efficiency is hindered by the substantial deficit in open-circuit voltage (V_OC) attributed to the presence of multiple defect states and detrimental recombination losses.

In this work, solar cells based on Sb₂Se₃ absorber layers deposited by chemical-molecular beam deposition method at substrate temperatures of 400 °C, 450 °C, and 500 °C. Due to the precise control of the Sb/Se ratio, Sb₂Se₃ thin films with stoichiometric composition were obtained, which was confirmed by energy-dispersive X-ray spectroscopy. The effect of substrate temperature on the morphology and electrical properties of Sb₂Se₃ thin-films were characterized by scanning electron microscopy and hot probe method. The PV performance of Mo/Sb₂Se₃/ZnCdS/CdS/ZnO/ITO/Au devices were investigated by current-voltage characteristics, and external quantum efficiency. The conductivity values tend to increase from 1.2 × 10^–6 to 4.6 × 10^–4 (Ω cm)^-1 as the substrate temperature increased. Whereas, the trap-state density was determined between 7.3 × 10¹³ – 1.7 × 10¹⁴ cm^-3 in the absorber layer by the space charge limited current method. Ultimatety, it has been shown that defect densities in Sb₂Se₃ films can be suppressed to some extent by optimizing the substrate temperature. Best solar cell performance of 5.36%, resulting from V_OC of 476 mV, short-circuit current densit of 22.97 mA/cm⁻², and fill factor of 49% at the substrate temperature of 450 °C.

三硒化锑（Sb2Se3）具有良好的材料和光电特性，是光伏（PV）应用的理想候选材料。然而，由于存在多种缺陷态和有害的重组损耗，开路电压（VOC）严重不足，阻碍了器件效率的进一步提高。在这项工作中，基于 Sb2Se3 吸收层的太阳能电池是在 400 ℃、450 ℃ 和 500 ℃ 的基底温度下通过化学分子束沉积法沉积而成的。由于精确控制了 Sb/Se 的比例，获得了具有化学计量成分的 Sb2Se3 薄膜，能量色散 X 射线光谱证实了这一点。利用扫描电子显微镜和热探针法研究了衬底温度对 Sb2Se3 薄膜形貌和电性能的影响。通过电流-电压特性和外部量子效率研究了 Mo/Sb2Se3/ZnCdS/CdS/ZnO/ITO/Au 器件的光伏性能。随着衬底温度的升高，电导率值从 1.2 × 10-6 增至 4.6 × 10-4 (Ω cm)-1。而通过空间电荷限流法测定的吸收层陷阱态密度介于 7.3 × 1013 - 1.7 × 1014 cm-3 之间。最终结果表明，通过优化衬底温度，可以在一定程度上抑制 Sb2Se3 薄膜中的缺陷密度。在 450 °C 的衬底温度下，太阳能电池的最佳性能为 5.36%，VOC 为 476 mV，短路电流密度为 22.97 mA/cm-2，填充因子为 49%。

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引用次数: 0

Fabrication of thin film for triple-cation perovskite via hot-bar-coating method without post-annealing process 通过热棒涂层法制造三阳离子过氧化物薄膜，无需后退火工艺

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films

Pub Date : 2024-11-15 DOI: 10.1016/j.tsf.2024.140563

Shogo Miyake , Genya Uzurano , Akihiko Fujii , Masanori Ozaki

The triple-cation perovskite Cs_0.05(MA_0.17FA_0.83)_0.95Pb(I_0.83Br_0.17)₃ was deposited using the hot-bar-coating method. The effects of the substrate temperature and coating bar sweep speed on the film quality were investigated. Coating the precursor solution at a substrate temperature of 150 °C, reduced fabrication time by eliminating the post-annealing process, which is essential to conventional film fabrication methods, i.e., the antisolvent method. We further investigated the dependence of thin film thickness and quality on the coating bar sweep speed, finding that the optimal film quality was achieved at a speed of 4 mm/s. Importantly, decomposition into PbI₂ was not observed during film fabrication for the triple-cation perovskite. The results of solar cell property measurements, indicating that the fabricated devices maintained high performance for 500 h in ambient air, suggest that the hot-bar-coating method is a promising approach for producing perovskite solar cells with high atmospheric stability and potentially low cost.

采用热棒镀膜法沉积了三阳离子包晶石 Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3。研究了基底温度和镀膜棒扫描速度对薄膜质量的影响。在 150 ℃ 的基底温度下涂覆前驱体溶液，省去了传统薄膜制造方法（即反溶剂法）中必不可少的后退火过程，从而缩短了制造时间。我们进一步研究了薄膜厚度和质量与镀膜棒扫描速度的关系，发现在扫描速度为 4 mm/s 时薄膜质量最佳。重要的是，在三阳离子包晶体的薄膜制造过程中，没有观察到分解成 PbI2 的现象。太阳能电池性能测量结果表明，制造出的器件在环境空气中放置 500 小时后仍能保持高性能，这表明热棒镀膜法是生产具有高大气稳定性和潜在低成本的包光体太阳能电池的一种可行方法。

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引用次数: 0

Mechanism of the local destruction of the amorphous Ta2O5 layer on the surface of a tantalum anode 钽阳极表面无定形 Ta2O5 层局部破坏的机理

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films

Pub Date : 2024-11-15 DOI: 10.1016/j.tsf.2024.140564

B.E. Pushkarev, R.M. Nikonova, V.I. Lad'ynov

In the present work, a mechanism of the destruction of amorphous tantalum oxide Ta₂O₅ on the tantalum anode surface is suggested based on high absorption properties of tantalum. The data of analysis of the morphological peculiarities of the defective areas of the surface layers show that the destruction of the amorphous film occurs due to the growth of a pyramid-shaped defect; the pyramidal defect is not coherent with amorphous surface Ta₂O₅, and it is not a product of its crystallization. The nucleation and growth of the “pyramid” occurs due to the directed movement of oxygen during the oxidation of the tantalum surface along the grain boundaries to the region of triple junctions of the tantalum matrix with the subsequent local formation of crystalline Ta₂O₅. The suggested mechanism offig destruction can be realized when high-purity tantalum powders are used.

本研究根据钽的高吸收特性，提出了钽阳极表面无定形氧化钽 Ta2O5 的破坏机理。对表层缺陷区域形态特征的分析数据表明，非晶膜的破坏是由于金字塔形缺陷的生长造成的；金字塔形缺陷与非晶表面 Ta2O5 不一致，也不是其结晶的产物。金字塔 "的成核和生长是由于氧在钽表面氧化过程中沿着晶界定向移动到钽基体的三重连接区域，随后在局部形成结晶 Ta2O5。在使用高纯度钽粉末的情况下，可以实现所建议的晶粒破坏机制。

引用次数: 0

Effect of thermal annealing on the luminescent and structural properties of the SiOxCy thin films by organic catalytic chemical vapor deposition 热退火对有机催化化学气相沉积 SiOxCy 薄膜的发光特性和结构特性的影响

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films

Pub Date : 2024-11-15 DOI: 10.1016/j.tsf.2024.140568

M. Meneses , M.F. Ávila Meza , J.R. Ramos Serrano , Y. Matsumoto

Photoluminescent silicon oxycarbide (SiO_xC_y) thin films were deposited on n-type (100) silicon substrates using the organic catalytic chemical vapor deposition (OCat-CVD) technique employing tetra-ethyl orthosilicate (TEOS) as an organic-based precursor. These films were annealed at a temperature of 500, 800 and 1000 °C for 30 min in a nitrogen (N₂) environment. The as-deposited and annealed SiO_xC_y films were analyzed using optical and structural characterizations, such as photoluminescence (PL), Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), Secondary ion mass spectrometry (SIMS) and scanning electron microscopy (SEM). The PL spectrum of the as-deposited film showed emission in the blue-green region, while the annealed SiO_xC_y films showed strong emission from blue to near-infrared. The PL in all the films was attributed to different structural defects related to oxygen and carbon that act as radiative centers in the SiO_xC_y network. The annealed films showed an increase in the emission intensity, where the annealed film at 800 °C displayed the highest emission intensity. This is related to an increase in the amount of radiative defects in the films due to structural and compositional changes after the thermal annealing (TA). XPS and SIMS measurements showed an oxygen incorporation with the TA, increasing from 54.6 at % to 63.8 at % for the as-deposited and annealed at 1000 °C films, respectively. FTIR spectra showed an increase in the Si-O-C and Si-O-Si bonds and the hydrogen and other radicals desorption. These results support the creation of radiative centers due to structural changes in the films after the thermal annealing.

利用有机催化化学气相沉积（OCat-CVD）技术，采用原硅酸四乙酯（TEOS）作为有机基前驱体，在 n 型（100）硅衬底上沉积了光致发光碳化硅（SiOxCy）薄膜。这些薄膜在氮气（N2）环境中分别在 500、800 和 1000 °C 的温度下退火 30 分钟。使用光致发光 (PL)、傅立叶变换红外 (FTIR)、X 射线光电子能谱 (XPS)、二次离子质谱 (SIMS) 和扫描电子显微镜 (SEM) 等光学和结构特性分析了铟锡氧化物薄膜。沉积薄膜的聚光光谱显示出蓝绿区域的发射，而退火的 SiOxCy 薄膜则显示出从蓝色到近红外的强烈发射。所有薄膜的聚光都归因于与氧和碳有关的不同结构缺陷，这些缺陷在 SiOxCy 网络中充当辐射中心。退火薄膜的发射强度有所增加，其中 800 °C 退火薄膜的发射强度最高。这与热退火（TA）后薄膜的结构和成分变化导致辐射缺陷数量增加有关。XPS 和 SIMS 测量显示，随着温度的升高，氧的掺入量从 54.6% 增加到 63.8%。傅立叶变换红外光谱显示，Si-O-C 和 Si-O-Si 键增加，氢和其他自由基解吸。这些结果表明，热退火后薄膜的结构发生了变化，从而产生了辐射中心。

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引用次数: 0

Phase evolution and surface analysis of electron beam evaporated calcium and yttria-stabilized zirconia thin films 电子束蒸发钙和钇稳定氧化锆薄膜的相变和表面分析

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films

Pub Date : 2024-11-15 DOI: 10.1016/j.tsf.2024.140575

Ankit Kumar , Pravin Kumar , A S Dhaliwal

The manuscript investigates the structural and morphological characteristics of thin films of calcium stabilized zirconia (CSZ, 16 mol % CaO), synthesized through electron beam deposition on silicon wafers, with a focus on the phase evolution during annealing at 800 °C. The study compares these properties with yttria stabilized zirconia (YSZ, 8 mol % Y₂O₃) thin films. Rutherford backscattering spectrometry validates film composition, with thicknesses of ∼315 nm for CSZ and ∼285 nm for YSZ. X-ray diffraction initially identifies an amorphous structure, transitioning to a cubic phase post-annealing, with average crystallite sizes of 18.07 nm for CSZ and 16.22 nm for YSZ, corroborated by Raman spectroscopy. The lattice parameters are determined using Rietveld refinement. Surface morphology is investigated through field emission scanning electron microscope and atomic force microscopy shows a reduction in surface roughness from 6.05 nm to 1.34 nm for CSZ and from 4.54 nm to 1.64 nm for YSZ post-annealing, indicating enhanced homogeneity. Elemental distribution analysis using energy dispersive X-ray spectroscopy confirms film uniformity. The study provides insights into the structural evolution and morphological characteristics of calcium stabilized zirconia thin films, particularly at the nanoscale level, offering valuable contributions to its industrial applicability.

该手稿研究了在硅晶片上通过电子束沉积合成的钙稳定氧化锆（CSZ，16 mol % CaO）薄膜的结构和形态特征，重点是 800 °C 退火过程中的相变。研究将这些特性与钇稳定氧化锆（YSZ，8 mol % Y2O3）薄膜进行了比较。卢瑟福背散射光谱法验证了薄膜的成分，CSZ 的厚度为 ∼315 nm，YSZ 的厚度为 ∼285 nm。X 射线衍射初步确定了无定形结构，退火后过渡到立方相，CSZ 和 YSZ 的平均结晶尺寸分别为 18.07 nm 和 16.22 nm，拉曼光谱也证实了这一点。晶格参数是通过里特维尔德精炼法确定的。通过场发射扫描电子显微镜和原子力显微镜对表面形貌进行了研究，结果表明退火后 CSZ 的表面粗糙度从 6.05 nm 降至 1.34 nm，YSZ 的表面粗糙度从 4.54 nm 降至 1.64 nm，这表明均匀性得到了增强。利用能量色散 X 射线光谱进行的元素分布分析证实了薄膜的均匀性。这项研究深入揭示了钙稳定氧化锆薄膜的结构演变和形态特征，尤其是在纳米级水平上，为其工业应用提供了宝贵的资料。

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引用次数: 0

Structure and hysteresis properties of Ni/Ta nanocomposite films modified by thermomagnetic treatment 热磁处理改性镍/钽纳米复合薄膜的结构和磁滞特性

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films

Pub Date : 2024-11-15 DOI: 10.1016/j.tsf.2024.140576

V.O. Vas'kovskiy , A.A. Bykova , N.A. Kulesh , A.N. Gorkovenko , V.N. Lepalovskij , P.A. Savin , N.V. Selezneva

This work presents the results of a study on the crystal structure and hysteresis properties of nickel films (glass/Ni) and their layered composites (glass/Ni/Ta, glass/Ta/Ni/Ta) modified by thermomagnetic treatment. Using analysis of angular dependencies of coercive force, it has been shown that in the initial state all types of samples exhibit biaxial magnetic anisotropy, which is likely a result of the superposition of the "magnetostatic" and "magnetoelastic" mechanisms. We show that the thermomagnetic treatment can result in the formation of uniaxial or isotropic magnetic states, depending on the sample design.

本研究介绍了对镍膜（玻璃/镍）及其经热磁性处理改性的层状复合材料（玻璃/镍/钽、玻璃/钽/镍/钽）的晶体结构和磁滞特性的研究结果。通过分析矫顽力的角度依赖性，我们发现所有类型的样品在初始状态下都表现出双轴磁各向异性，这可能是 "磁静力 "和 "磁弹性 "机制叠加的结果。我们的研究表明，热磁处理可导致单轴或各向同性磁态的形成，具体取决于样品的设计。

引用次数: 0

Surface texturized graphene oxide coating on Ti6Al4V by integrated femtosecond laser 利用集成飞秒激光在 Ti6Al4V 上形成表面纹理氧化石墨烯涂层

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films

Pub Date : 2024-11-15 DOI: 10.1016/j.tsf.2024.140567

Jianwei Zhai , Zhou Yu , Jun Hu

Graphene oxide (GO) coating has the advantages of high specific surface area and easy functional modification, and has great application prospects in orthopedic implants. However, its poor osteogenic properties limit its application and need to be further improved. Studies have shown that periodic nanostreaks on the surface of long bone during development are beneficial to improve osteogenic properties and promote periosteal tissue formation. Therefore, based on the idea of duplex modification combining surface coating and surface texture technology, this paper uses femtosecond laser to construct periodic structure on the surface of GO coating on titanium alloy substrate, and controls the surface micro-nano morphology and chemical composition of GO coating. The surface morphology, crystal structure and chemical composition were characterized and confirmed by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR) and three-dimensional laser confocal microscopy. Using this technique, a uniform and complete GO coating is prepared and periodic nanofringes (i.e. laser-induced periodic surface structures) are formed on its surface under laser action without damaging the substrate material. In the case of a scan speed of 0.005m/s, the period changes from 924 nm to 442 nm when the laser power is increased from 0.4 W to 8W. Raman spectrum results show that the degree of graphitization increases and the disorder decreases under laser action. XPS and FTIR confirmed the removal of oxygen-containing groups and the conversion of Csp³ to Csp² in the GO coating.

氧化石墨烯（GO）涂层具有比表面积大、易于功能修饰等优点，在骨科植入物中具有广阔的应用前景。然而，其不良的成骨特性限制了它的应用，需要进一步改进。研究表明，长骨在发育过程中，其表面周期性的纳米突起有利于改善成骨性能，促进骨膜组织的形成。因此，本文基于表面涂层与表面纹理技术相结合的双重改性思想，利用飞秒激光在钛合金基底的 GO 涂层表面构建周期性结构，并控制 GO 涂层的表面微纳形貌和化学成分。通过扫描电子显微镜、X 射线衍射、X 射线光电子能谱（XPS）、拉曼光谱、傅立叶变换红外光谱（FTIR）和三维激光共聚焦显微镜对表面形貌、晶体结构和化学成分进行了表征和确认。利用这种技术，可以制备出均匀完整的 GO 涂层，并在激光作用下在其表面形成周期性纳米流纹（即激光诱导的周期性表面结构），而不会损坏基底材料。在扫描速度为 0.005m/s 的情况下，当激光功率从 0.4 W 增加到 8 W 时，周期从 924 nm 变为 442 nm。拉曼光谱结果表明，在激光作用下，石墨化程度增加，无序度降低。XPS 和傅立叶变换红外光谱证实了在 GO 涂层中含氧基团的去除和 Csp3 向 Csp2 的转化。

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引用次数: 0

Optimization of titanium alloy bipolar plate performance in proton exchange membrane water electrolysis with Cr/W/diamond-like carbon coating Cr/W/类金刚石碳涂层质子交换膜电解钛合金双极板性能优化

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films

Pub Date : 2024-11-15 DOI: 10.1016/j.tsf.2024.140580

Xiaoyu Gong , Shaolong Wang , Xiejing Luo , Anqing Fu , Chaofang Dong

The operating environment for bipolar plates in proton exchange membrane water electrolysis (PEMWE) systems is highly challenging, characterized by high electrical potential, acidic pH, and elevated temperatures. Bipolar plates must possess high corrosion resistance and electrical conductivity to ensure stable and efficient system perfomance. Therefore, surface coatings are essential to decelerate oxidation on the substrate surface, preventing a significant increase in interfacial contact resistance (ICR). This investigation applied a Cr/W/diamond-like carbon (DLC) coating to titanium alloy (Ti-6Al-4 V, also known as TC4) surfaces using magnetron sputtering. The multilayer coating system was designed to enhance electrical conductivity and corrosion resistance of the bipolar plate while ensuring good coating adhesion. At potentials of 1.2 V, 1.5 V, and 1.8 V, the current densities measured during potentiostatic polarization were 0.11 μA·cm^-2, 0.19 μA·cm^-2, and 0.4 μA·cm^-2, respectively, showing a significant reduction compared to the TC4 matrix and demonstrating long-term stability. The Cr/W/DLC-coated TC4 bipolar plates exhibited an ICR of 16.98 mΩ/cm² under a contact pressure of 1.4 MPa. These results suggest that the coating provides exceptional corrosion resistance under PEMWE operating conditions while retaining electrical conductivity.

质子交换膜电解（PEMWE）系统中双极板的操作环境极具挑战性，其特点是高电位、酸性pH值和高温。双极板必须具有高的耐腐蚀性和导电性，以确保稳定和高效的系统性能。因此，表面涂层对于减缓基材表面的氧化，防止界面接触电阻（ICR）的显著增加至关重要。本研究采用磁控溅射技术在钛合金（ti - 6al - 4v，也称为TC4）表面镀上Cr/W/类金刚石（DLC）涂层。多层涂层体系旨在提高双极板的导电性和耐腐蚀性，同时保证涂层的良好附着力。在1.2 V、1.5 V和1.8 V电位下，恒电位极化过程中测得的电流密度分别为0.11 μA·cm-2、0.19 μA·cm-2和0.4 μA·cm-2，与TC4基体相比，电流密度显著降低，且具有长期稳定性。在接触压力为1.4 MPa时，Cr/W/ dlc涂层TC4双极板的ICR为16.98 mΩ/cm2。这些结果表明，该涂层在PEMWE操作条件下具有优异的耐腐蚀性，同时保持导电性。

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引用次数: 0

Synthesis of zinc hydroxyl acetate nanosheet-assembled honeycomb-like and flower-like structures by chemical bath deposition method for the construction of hydrophobic surfaces 用化学沉积法合成用于构建疏水表面的蜂窝状和花朵状羟基醋酸锌纳米片材结构

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films

Pub Date : 2024-11-15 DOI: 10.1016/j.tsf.2024.140569

Rulin Dong, Jingyu Tan, Yiyi Ji, Zhixin Qi, Zhidong Chen, Yukai Chen

Layered zinc hydroxyl acetate (LZHA) nanosheet-assembled honeycomb-like and flower-like structures were synthesized by a chemical bath deposition method using aqueous zinc acetate solution as the bath solution and a porous ZnO coating as the substrate. The morphology of LZHA architectures growing on the surface of the substrate depends on the type of LZHA nucleation. The homogeneous nucleation facilitates the adsorption of crumpled LZHA nanosheets generated in the solution onto the substrate surface, whereas heterogeneous nucleation promotes the formation of flat LZHA nanosheets on the substrate surface. The crumpled and flat LZHA nanosheets serving as the seeds undergo cyclic “growth-division” processes to evolve into LZHA nanosheet-assembled honeycomb-like and flower-like structures, respectively. The hierarchical architecture features of the LZHA honeycombs and flowers can be topologically inherited without any crack and collapse when converted into ZnO by calcination. The LZHA honeycomb-like and Ag nanoparticle modified ZnO flower-like structures were characterized by a scanning electron microscope, field-emission scanning electron microscope, energy dispersive X-ray spectrometer and X-ray diffractometer. The synthesized ZnO honeycomb-like and flower-like structures show excellent hydrophobic properties owning to the appropriate roughness provided by the hierarchical structures. In particular, the surface assembled by ZnO honeycombs derived from their LZHA precursors with deposition time of 4 h shows a higher water contact angle of 162.3°. In addition, the Ag nanoparticle modification on the petals of ZnO flowers results in the formation of multi-scale rough surfaces, and thus increases the water contact angle. The synthesized superhydrophobic surfaces exhibit promising applications in fields such as anti-icing, anti-corrosion and reducing fluidic drag.

以醋酸锌水溶液为浴液，多孔氧化锌涂层为基底，采用化学沉积法合成了层状羟基醋酸锌（LZHA）纳米片状蜂窝状和花状结构。生长在基底表面的 LZHA 结构的形态取决于 LZHA 的成核类型。同质成核有利于溶液中产生的皱褶 LZHA 纳米片吸附到基底表面，而异质成核则会促进扁平 LZHA 纳米片在基底表面的形成。作为种子的皱褶和扁平 LZHA 纳米片经过循环 "生长-分裂 "过程，分别演化成 LZHA 纳米片组装的蜂窝状结构和花状结构。LZHA 蜂窝状结构和花状结构的分层结构特征在煅烧转化为氧化锌时可以拓扑继承，不会出现任何裂缝和塌陷。扫描电子显微镜、场发射扫描电子显微镜、能量色散 X 射线光谱仪和 X 射线衍射仪对 LZHA 蜂窝状结构和 Ag 纳米粒子修饰的 ZnO 花状结构进行了表征。由于分层结构具有适当的粗糙度，合成的氧化锌蜂窝状结构和花状结构显示出优异的疏水性能。特别是，在沉积时间为 4 小时的情况下，由 LZHA 前驱体生成的氧化锌蜂窝组装的表面显示出 162.3° 的较高水接触角。此外，氧化锌花瓣上的银纳米粒子修饰会形成多尺度粗糙表面，从而增大水接触角。合成的超疏水表面在防结冰、防腐蚀和减少流体阻力等领域具有广阔的应用前景。

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引用次数: 0