Contactless electroreflectance spectroscopy with a semitransparent capacitor made of a silver mesh of ultrathin lines

Ślusarz, Anna M.; Kopaczek, Jan; Dybała, F.; Wiatrowska, Aneta; Granek, F.; Kudrawiec, R.

doi:10.1016/j.measurement.2020.108361

Cited by 4 publications

(5 citation statements)

References 32 publications

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“…31,32 TEs with these unique, uneven patterns can be used as before in all TE applications, including contactless electroreflectance and surface photovoltage. 12 However, these wirelike TEs also gain a new, additional applications due to their individual character in a new area where properties such as transparency, conductivity, and uniqueness are needed. An example is transparent electromagnetic interference filters, which were investigated by Shen et al using random-pattern metal-mesh.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Regular shapes such as mesh-shaped patterns are very common in the context of transparent electrodes and can be manufactured using many different methods, usually with tunable line width and spacing. − Polygons, circles, , and other regular shapes always require predesign to plan the movement of the printer head, laser head, or other device used in the method or, in the case of photolithography, to make the mask. Regular shapes have the advantage easily predicted TE mechanisms of action due to the simple design that can be simulated.…”

Section: Introductionmentioning

confidence: 99%

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Crack-Templated Wire-Like Semitransparent Electrodes with Unique Irregular Patterns

Ślusarz

Kudrawiec

2022

ACS Omega

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The development of novel methods of producing transparent electrodes is important because of their ever-evolving applications and thus the additional parameters they must meet. In this work, we present a method of manufacturing semitransparent silver electrodes. This technique involves cracking the polyvinylpyrrolidone layer in the presence of a colloidal nanodispersion of zinc oxide. The resulting cracked polymer layer serves as the disposable mask for metal deposition. The whole procedure is valuable due to the fast and easy step of cracks formation caused by the elevated temperature and reduced pressure. The obtained electrodes have high transparency (82.4%) in a wide spectral range, which is only limited by the transparency of the applied substrate, and low resistivity (27.3 × 10–7 Ωm). The presence of unique patterns suggests new ideas for the applications of such electrodes, such as coding, security, and antiplagiarism protection.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Crack-Templated Wire-Like Semitransparent Electrodes with Unique Irregular Patterns

Ślusarz

Kudrawiec

2022

ACS Omega

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“…The results are reproducible for two electrodes made of different metals, silver and copper, with an identical resonance shape and magnitude. The electrodes were prepared using the same pattern with a pitch of 400 μm, which was previously determined as the best compromise between electrode transparency and electrical conductivity …”

Section: Applicationsmentioning

confidence: 99%

“…Two types of TEs can be distinguished: continuous conductive coatings and spaced narrow-shaped paths (e.g., mesh-shaped) . In the first case, the most common materials used as the thin conducting layers are transparent metal oxides, with indium tin oxide (ITO) being an industrial standard despite the high cost of indium.…”

Section: Introductionmentioning

confidence: 99%

Transparent Metal Mesh Electrodes Microfabricated by Structuring Water-Soluble Polymer Resist via Laser Ablation

Ślusarz

Komorowska

Baraniecki

et al. 2022

ACS Sustainable Chem. Eng.

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We present a method of manufacturing semitransparent mesh-shaped electrodes using laser structuring of a polymer followed by resistive thermal evaporation of a metallic layer. Toluene, used for preparing a polymer solution and its layer deposition, has been replaced with ethanol, thus eliminating a hazardous solvent from the process. The influence of adding photosensitizers to the polymer base on the structuring laser ablation threshold has been investigated, with most prominent reduction from 1.3 to ∼0.3 W for a UV laser line irradiation. Finally, and most importantly, the key step of this method, the development step that includes the removal of a resist, was carried out in water, thus ruling out completely other environmentally hazardous solvents from the process. Additionally, it does not require cleanroom conditions. The final electrode prototype was tested in electro- and thermomodulation measurements, proving its usefulness in spatial control of electric field and heat generation. Consequently, our work paves the way for other applications requiring patterned semitransparent electrodes made in a sustainable process.

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“…In this contribution we introduce an ultra-precise deposition (UPD) technology [4], [5] to print micrometric conductive structures and make arbitrarily-shaped interconnectors on steps that are much larger than then the feature size of the printed structure. Since the quality of interconnections in µLED arrays significantly influences the performance of a display [6], we will argue that UPD is a suitable technology for making mechanically robust and high-conductivity interconnectors in µLED displays.…”

Section: Introductionmentioning

confidence: 99%

59‐3: Ultra‐Precise Printing of Micrometer‐Size Interconnectors for High‐Resolution MicroLED Displays

Wiatrowska¹,

Kowalczewski²,

Fiączyk³

et al. 2021

Symp Digest of Tech Papers

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We demonstrate a novel ultra‐precise deposition (UPD) technology for printing of micrometer size, mechanically robust, and high‐conductivity interconnectors in micro‐LED (µLED) displays. UPD allows maskless deposition of highly‐concentrated silver inks (even 85% wt. of metal content) on steps much higher than the width of the printed structure. The printed feature size is as small as 1 micrometer with the electrical conductivity up to 45% of bulk silver.

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Contactless electroreflectance spectroscopy with a semitransparent capacitor made of a silver mesh of ultrathin lines

Cited by 4 publications

References 32 publications

Crack-Templated Wire-Like Semitransparent Electrodes with Unique Irregular Patterns

Crack-Templated Wire-Like Semitransparent Electrodes with Unique Irregular Patterns

Transparent Metal Mesh Electrodes Microfabricated by Structuring Water-Soluble Polymer Resist via Laser Ablation

59‐3: Ultra‐Precise Printing of Micrometer‐Size Interconnectors for High‐Resolution MicroLED Displays

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