- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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Nanostructured Transparent Conductive Electrodes for Applications in Harsh Environments Fabricated via Nanosecond Laser‐Induced Periodic Surface Structures (LIPSS) in Indium–Tin Oxide Films on Glass
摘要： A self-organization phenomenon named laser-induced periodic surface structures (LIPSS) is utilized for pattern formation in indium–tin oxide (ITO) transparent conductive films coated on borosilicate glass. Stripe patterns with periodicities down to 175 nm are created by scanning the focused beam (30 μm spot diameter 1 e?2) of a nanosecond pulsed laser operating at 532 nm wavelength over ITO films. Highly ordered ITO-LIPSS are generated at a pulse duration of 6 ns, pulse frequencies between 100 and 200 kHz, pulse energies around 20 μJ, and laser spot scan speeds in the range of 50–80 mm s?1. Resulting nanopatterns are electrically conductive and feature improved optical transparency as well as stability against strong acids such as hydrochloric acid, sulfuric acid, and even aqua regia. The formation of mixed phases between ITO and silicon is considered to be the origin for the chemical robustness of laser patterned transparent conductive electrodes.
关键词： laser-induced periodic surface structures (LIPSS),laser patterning,self-organization,indium–tin oxide (ITO),transparent conductive films (TCF)
更新于2025-10-22 19:40:53
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Using a nanosecond laser to pattern copper nanowire-based flexible electrodes: From simulation to practical application
摘要： Copper nanowire (Cu NW) electrodes have shown promise for use in next-generation transparent conducting films due to their high electrical conductivity, low-cost solution-based synthesis processes, and high transmittance properties. Recently, the use of lasers for the modification of nanostructures has received considerable attention. Despite the advantages of laser machining such as producing any shape in an accurate, time-saving, non-contact process, the laser patterning of Cu NW electrodes has not been extensively studied, particularly the heat effect of the laser irradiation process on the flexible substrate. In this report, we present experimental and computational results of a selective and direct patterning process by using nanosecond pulsed laser irradiation. The experimental and simulation results were used to optimize the laser ablation parameters for the patterning process of the ultra-long Cu NW transparent electrodes so as to not damage the flexible substrates. Finally, a bifunctional flexible smart-window was fabricated to demonstrate a practical application of the laser-patterned Cu NW electrodes.
关键词： Copper nanowires,Laser patterning,Flexible substrate,Nanosecond pulsed laser,Flexible smart-window
更新于2025-09-23 15:21:01
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Effect of laser patterning on the material behaviour of 22MnB5 steel with induced local strengthening
摘要： When using a supporting laser patterning method, it is possible to adaptively tailor the strength variations and formability of a pre-fabricated single panel. This paper focuses on the effect of line and geometrical laser patterning on the strength enhancement and material behaviour of steel sheets. To validate the performance of the laser patterning specimens, a tensile test for evaluating the in-plane deformation behaviour and a 3-point bending test for out-of-plane have been conducted while maintaining the area fraction for the laser-treated area. Close-type laser patterns, e.g., 0°, auxetic, and honeycomb, not only induce a substantial increase in strength but also enhance bending resistance without sacrificing the springback tendency of the initial sheet material.
关键词： Fibre laser,Martensite,Laser patterning,Local hardening,22MnB5
更新于2025-09-23 15:21:01
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Optimization of laser-patterning process and module design for transparent amorphous silicon thin-film module using thin OMO back electrode
摘要： Transparent hydrogenated amorphous silicon thin-film solar modules are fabricated using oxide-metal-oxide (OMO) electrodes as the back electrode for building-integrated photovoltaic applications. The outer aluminum-doped zinc oxide and inner silver layers constitute a thin OMO electrode (~110 nm thick), exhibiting a sheet resistance of 6.8 Ω/□ and an average transmittance of ~88% in the visible range of 400–800 nm. The external quantum efficiency and average transmittance of the cell were investigated for the absorber-layer thickness using the finite-difference time-domain method, and it was found that the optical loss in the cell was mainly due to the absorption of the front electrode in the ultra-violet region and free-carrier absorption of the OMO in the infrared region. Fabrication issues are introduced for a 532 nm short-pulse high-power laser patterning process for transparent modules with thin OMO electrodes. Optimization of the laser power for the P2 and P3 laser processes is demonstrated by observing the profiles and measuring the shunt resistance of the laser-patterned edges. Furthermore, the cell width is optimized based on an equivalent circuit model using PSpice simulation. The highest module efficiency and average transparency achieved in the range of 500–800 nm were 5.6% and 15.2%, respectively. The short-circuit current density, fill factor, and open-circuit voltage per cell of the module were found to be 10.8 mA/cm2, 62.7%, and 0.830 V, respectively.
关键词： Laser patterning,Transparent amorphous silicon photovoltaic,Equivalent circuit,Building integrated photovoltaic,Cell geometry,Oxide-metal-oxide electrode
更新于2025-09-23 15:21:01
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Towards photovoltaic windows: scalable fabrication of semitransparent modules based on non-fullerene acceptors <i>via</i> laser-patterning
摘要： Semitransparent organic photovoltaics (OPV) possess unique properties that make them highly appealing for their integration into semitransparent architectonic elements such as windows or glazings. In order to provide sufficient transparency, non-opaque electrodes and thin photoactive layers are typically used, thus limiting the light-harvesting capacity. This can be partially overcome by using materials that absorb light mostly in the infrared region. On the other hand, the use of scalable techniques for the fabrication of semitransparent devices is often disregarded. In this work, we combine the blue, low-bandgap polymer PBTZT-stat-BDTT-8 with the near-infrared absorbing non-fullerene acceptor 4TICO, adapting the module fabrication to low-cost manufacturing processes that are compatible with large-scale production. Fully solution-processed semitransparent solar cells over 4.7% performance are prepared from non-chlorinated formulations, in air and using scalable techniques such as blade coating. Our prototypes of semitransparent laser-patterned OPV modules exceed 30% of transparency (measured as human perception transmittance, HPT) and yield efficiencies in the range of 4%, geometrical fill factors surpassing 90% and an active area above 1 cm2. We verify the quality of cell-to-cell interconnection and optimise the geometry of the modules with the help of local optoelectronic imaging techniques. This work highlights the relevance of non-fullerene acceptors with strong absorption in the near-infrared, as they can meet industrial and technical requirements for the upscaling and integration of high-performance semitransparent OPV modules with low production costs.
关键词： scalable fabrication,laser-patterning,non-fullerene acceptors,photovoltaic windows,semitransparent organic photovoltaics
更新于2025-09-23 15:21:01
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Spherical Mirror and Surface Patterning on Silicon Carbide (SiC) by Material Removal Rate Enhancement Using CO2 Laser Assisted Polishing
摘要： Silicon carbide (SiC) is well known as an excellent material for high performance optical applications because it offers many advantages over other commonly used glasses and metals. The excellent attributes of SiC include high strength, high hardness, low density, high thermal resistance, and low coefficient of thermal expansion. The effect of CO2 laser and its tool path on SiCwere investigated. The process started by creating laser pre-cracks on the desired pattern. Subsequently, laser assisted polishing was conducted on the same tool path. The surface showed a sharp increase in material removal in the areas with laser pre-cracks. This high difference in material removal was used not only to fabricate a ? 1100?mm concave mirror with 127?μm in depth but also to generate macro and micro patterns. Grooves from 2?mm to 200?μm in width and 5?μm to 20?μm depth were successfully generated.
关键词： Material removal rate,CO2 laser,Patterning,Polishing,Hybrid
更新于2025-09-23 15:21:01
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Fine metal mask material and manufacturing process for high-resolution active-matrix organic light-emitting diode displays
摘要： Manufacturing fine metal mask (FMM) is one of the biggest hurdles to realize the ultra-high definition (UHD) grade AMOLED displays for smartphone and augmented reality (AR). We have developed the state-of-the-art material and processing technology to achieve 800ppi or higher-resolution FMMs. The Invar thinning and the thermal damage-free laser ablation process realized us achieving the FMM for UHD displays.
关键词： UHD (ultra-high definition),laser patterning,AR (augmented reality),electro-forming,chemical etching,Invar,FMM (fine metal mask)
更新于2025-09-23 15:19:57
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Laser Patterning a Graphene Layer on a Ceramic Substrate for Sensor Applications
摘要： This paper describes a method for patterning the graphene layer and gold electrodes on a ceramic substrate using a Nd:YAG nanosecond fiber laser. The technique enables the processing of both layers and trimming of the sensor parameters. The main aim was to develop a technique for the effective and efficient shaping of both the sensory layer and the metallic electrodes. The laser shaping method is characterized by high speed and very good shape mapping, regardless of the complexity of the processing. Importantly, the technique enables the simultaneous shaping of both the graphene layer and Au electrodes in a direct process that does not require a complex and expensive masking process, and without damaging the ceramic substrate. Our results confirmed the effectiveness of the developed laser technology for shaping a graphene layer and Au electrodes. The ceramic substrate can be used in the construction of various types of sensors operating in a wide temperature range, especially the cryogenic range.
关键词： cryogenic,ceramic substrate,laser patterning,graphene
更新于2025-09-23 15:19:57
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27.2: <i>Invited Paper:</i> High resolution FMM process for AMOLED displays
摘要： Fine metal mask (FMM) is one of the biggest hurdles to realize high resolution AMOLED displays for smartphone and virtual reality (VR). Various kinds of the material and processing technologies for high resolution FMMs are discussed.
关键词： Invar,Chemical Etching,VR (Virtual Reality),Electroforming,Laser patterning,FMM (Fine Metal Mask),UHD (Ultra High Definition),AMOLED
更新于2025-09-19 17:13:59
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[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Direct Laser Patterned Electroplated Copper Contacts for Interdigitated Back Contact Silicon Solar Cells
摘要： Laser patterning of seed layers for Cu electroplated interdigitated contacts on Ni/a-SiNx:H/Si substrates is presented. Damage was controlled by varying the laser conditions. Cu growths shorted the contacts due to conductive residues in the scribe lines, but were attenuated with pre-deposition etching yielding electrically-isolated plated fingers. Parasitically-plated Cu stripes were now observed in laser cuts, postulated due to Cu nucleation from high current densities at pinholes originating from laser and etch damage to the resistive a-SiNx:H. While a promising approach for contact processing, laser conditions must be carefully optimized to minimize substrate damage.
关键词： photovoltaic cells,interdigitated back contacts,copper electrodeposition,laser patterning,silicon
更新于2025-09-19 17:13:59