- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Enhanced Oxidation Stability of Transparent Copper Films Using a Hybrid Organic-Inorganic Nucleation Layer
摘要： We report a novel seed layer for the formation of slab-like transparent copper films on glass and plastic substrates, based on a mixed molecular monolayer and an ultra-thin (0.8 nm) aluminium layer both deposited from the vapour phase, which substantially outperforms the best nucleation layer for optically thin copper films reported to date. Using this hybrid layer, the metal percolation threshold is reduced to < 4 nm nominal thickness and the long-term stability of sub-10 nm films towards oxidation in air is comparable to that of silver films of the same thickness fabricated using the best reported seed layer for optically thin silver films to date. The underlying reason for the remarkable effectiveness of this hybrid nucleation is elucidated using a combination of photoelectron spectroscopy, small angle X-ray studies, atomic force microscopy and transmission electron microscopy.
关键词： ultrathin metal film,nucleation,transparent electrode,seed layer,passivation,copper
更新于2025-10-22 19:40:53
-
Seed Free Growth of Aligned ZnO Nanowire Arrays on AZO Substrate
摘要： In the absence of commonly used seed layer, we can still successfully synthesized aligned ZnO nanowire arrays by the hydrothermal method. By using aluminum-doped zinc oxide (AZO) glass as a substrate, high-density and vertically aligned ZnO nanowires were synthesized directly on the substrate in the absence of the ZnO seed layer. The current-voltage curve indicated that the sample grown on AZO glass substrate in the absence of seed layer possesses better conductivity than that synthesized on FTO glass substrate with ZnO seed layer. Thus, a simplified, seed-free and low-cost experimental protocol was reported here for large-scale production of high quality ZnO nanowire arrays with promoted conductivity.
关键词： conductivity,ZnO nanowire arrays,seed layer free,AZO substrate
更新于2025-09-23 15:23:52
-
Effect of seed layer on growth of rutile TiO <sub/>2</sub> nanorods
摘要： For achieving the high quality of titanium dioxide (TiO2) nanorods, herein, we present a synthesis of rutile TiO2 nanorods on a transparent conductive fluorine-doped tin oxide (FTO) glass substratewith seed layer by a two-step method. TiO2 thin films were first precoated by spin coating and annealing, followed by the growth of TiO2 nanorods with a hydrothermal method. The crystallographic nanostructures and properties of the nanorods were investigated. XRD results demonstrate that seed layer was tetragonal anatase TiO2 structure while nanorods had tetragonal rutile TiO2 structure. Since the hydrothermal technique was conducted in medium acid, structure of nanorods was induced to form in rutile phase. The major characteristic orientation of nanorods on the seed layers was (002) and minor in (101) planes. FE-SEM results show that seed layer enhances the process to achieve vertical-aligned orientation of the TiO2 nanorods, which contribute to develop electron transport rate and could pay an important role inelectron transport layer in high-performance Perovskite solar cell.
关键词： seed layer,hydrothermal method,rutile TiO2 nanorods,Perovskite solar cell,electron transport layer
更新于2025-09-23 15:19:57
-
Completely aqueous route for metallization of structural polymeric materials in micro-electro-mechanical systems
摘要： A one-step aqueous diazonium-based process has been proved e?cient with respect to the covalent grafting of aminophenyl layers onto KMPR photoresist polymer. In contact with acidic palladium chloride solution for only a few minutes, the positively charged protonated aminophenyl groups on the modi?ed KMPR surface can electrostatically immobilize PdCl4 2? complexes. This KMPR surface functionalized with palladium-aminophenyl complex activators enables initialize the subsequent autocatalytic deposition of nickel (electroless nickel plating) and leads to a formation of adhesive nickel-boron ?lm onto KMPR substrate. Our proposed green chemistry strategy for the metallization of KMPR photoresist polymer via the diazonium reduction suggests an opportunity to bene?t from the incomparable physico-chemical properties of KMPR by integrating it within MEMS structures. The obtained 60 nm thick and compact nickel?boron alloy (93:7 by weight), evidenced through SEM, AFM and XPS techniques, can be used as a conductive seed layer for direct electrolytic deposition of copper. Consequently, a vacuum-free process for copper ?lling of mechanical features etched inside the KMPR layer has been demonstrated.
关键词： Metallization of structural polymers,One-step amination,Nickel seed layer,Green chemistry plating,Micro-electro-mechanical systems
更新于2025-09-19 17:15:36
-
The Impact of Growth Temperature on Nanorod Morphology and Optical Properties for CH3NH3PbI3 Perovskite Solar Cell Device Application
摘要： Perovskite solar cells have been studied intensively by photovoltaic researchers in recent years due to their ability to absorb proper light. This research describes the CH3NH3PbI3 perovskite solar cell fabrication process. The solar cell structure is composed of ITO/ZnO seed layer/ZnO NRs/CH3NH3PbI3, with ZnO NRs as a nano shaped stem layer where perovskite crystals form. ZnO NRs have been successfully synthesized on the ITO substrate by a hydrothermal method. The ZnO seed layer is synthesized by a spin coating method in a mixture of zinc acetate dihydrate solution and ethanol. ZnO NRs were synthesized using hexamethylenetetramine (HMT) and zinc nitrate with a 1:1 molar ratio for 6 h. Some variations in growth temperature used were 80, 90 and 100 oC with a zinc nitrate concentration of 50 mM. Similarly, perovskite film devices are made through a two-step deposition using PbI2 and CH3NH3I as the main ingredients. The effects of synthesis conditions on ZnO NRs film and perovskite film devices were systematically investigated to look at the structure, morphology, optical properties of films and electrical properties of films using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), IV meter and LCR AC meter. The SEM results show that as the temperature increases, the size of the diameter and length of the rods are increased. The large rod diameter and length decrease the value of energy band gap. ZnO NRs synthesized with 50 mM concentrations at 100 oC showed the best results regarding morphology and optical properties. The film has a diameter size of 365 nm, length of the rod of 5.1 μm, and an energy band gap of 3.15 eV. The diffraction results indicate a PbI2 peak implying that it has not been converted to CH3NH3PbI3. The existence of PbI2 is suspected of opening the gap of recombination so that the current value measured by I-V meter is relatively small (0.186×10-6 μA). The low current that was generated indicates a high dielectric value and resistivity so that the light absorbing ability is less than perfect.
关键词： hydrothermal,perovskite solar cell,seed layer,ZnO nanorods
更新于2025-09-19 17:13:59
-
Three-dimensional ZnO nanorods growth on ZnO nanorods seed layer for high responsivity UV photodetector
摘要： Three-dimensional ZnO nanorods (NRs) were synthesized by hydrothermal method on ZnO seed layer including horizontal ZnO NRs. The ZnO seed layers consist of different values of NRs were synthesized by spin-coating. The different seed layers and ZnO nanorods arrays were characterized using field emission scanning electron microscopy, X-ray diffraction. Horizontally dispersed NRs on the substrate formed an overlapping junction structure into seed layer as ZnO NRs network. NRs grown on the seed layer including horizontal NRs were oriented in different directions to form three-dimensional ZnO NRs in flower shape. The electrical resistance of sensors based NRs array decreased dramatically with increasing NRs added to ZnO seed layer. Results show that ultraviolet photocurrent increased from 1.7 to 23 μA which is suitable for fabrication of practical photodevices.
关键词： UV photodetector,ZnO nanorods,seed layer,photocurrent,hydrothermal method
更新于2025-09-12 10:27:22
-
[IEEE 2019 IEEE 69th Electronic Components and Technology Conference (ECTC) - Las Vegas, NV, USA (2019.5.28-2019.5.31)] 2019 IEEE 69th Electronic Components and Technology Conference (ECTC) - Fully-Filled, Highly-Reliable Fine-Pitch Interposers with TSV Aspect Ratio >10 for Future 3D-LSI/IC Packaging
摘要： Si interposer with 10 μm-width, 100 μm-deep through-silicon via (TSV) has been fabricated using electroless (EL) Ni as barrier and seed layers, and characterized for their electrical resistance. The chemistry of electroless-Ni plating bath was meticulously adjusted for the conformal formation of Ni along the TSV side wall. From the resistance value of 36 mΩ per TSV obtained from the Kelvin measurement of these Cu-TSV chain showed that the electroless Ni layer well acts as a good seed layer for completely filling the high aspect ratio TSVs by Cu-electroplating.
关键词： Barrier/Seed layer,Si interposer,Cu-TSV,Electroless Ni,Cu-diffusion
更新于2025-09-12 10:27:22
-
Growth of Zinc Oxide Nanorods with the Thickness of Less than or Equal to 1? <i>μ</i> m through Zinc Acetate or Zinc Nitrate for Perovskite Solar Cell Applications
摘要： Arrays of zinc oxide (ZnO) nanorod (NR) were fabricated in a vertical axis direction through the two-step method of seed layer’s deposition and growth of the NR. The seed layer was applied by spin coating with a three-time repetition (n) and rotational speed (v) at 3000 rpm. After the seed layer had grown, ZnO NRs were grown with a growth solution made by combining one zinc source with one hydroxide source. There were two di?erent zinc sources, i.e., zinc acetate dehydrate and zinc nitrate hexahydrate and, for comparison, zinc acetate (ZA) and zinc nitrate (ZN) were each combined with the same hydroxide source, hexamethylene-tetramine (HMT). Later, the growth solutions were processed by the chemical bath deposition (CBD) method using a waterbath machine. The CBD method was started at room temperature until it reached the designated temperature at 85°C. At that point, the growth time was calculated from the zero-minute condition. It was found that ZnO NRs had already grown at a thickness of about 100 nm for both ZA and ZN sources. The growth time varied at 15, 60, 90, and 120 minutes after the zero-minute point. By using two separate and independent zinc sources while growing ZnO NRs at various growth periods, several ZnO NRs’ thicknesses were controlled. According to a paper by Lee et al., the lower thickness of ZnO NRs boosted the charge transfer properties of perovskite solar cells (PSCs) because the series resistance between ZnO/perovskite interfaces was lessened. Scanning electron microscopy (SEM) images were observed to analyze the morphological shape of the ZnO NRs. X-ray di?raction (XRD) pro?les were characterized to obtain the data for ZnO NR crystallinity. Full width at half maximum (FWHM) analysis was performed at the (002) ZnO peak to calculate the crystal size of the peak. From the results, the smallest crystallite sizes for ZnO NRs grown from ZA and ZN sources were 10.70 nm and 19.29 nm, respectively, which would be the most suitable condition for PSC application.
关键词： zinc oxide nanorods,perovskite solar cells,chemical bath deposition,spin coating,seed layer
更新于2025-09-11 14:15:04