Roll-to-roll patterning of Al/Cu/Ag electrodes on flexible poly(ethylene terephthalate) by oil masking: a comparison of thermal evaporation and magnetron sputtering

Stuart, Bryan W.; Tao, Xudong; Gregory, Daniel; Assender, Hazel E.

doi:10.1016/j.apsusc.2019.144294

Cited by 21 publications

(31 citation statements)

References 40 publications

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“…Laboratory studies commonly used a solid shadow mask to make segmented strips or in‐line patterns of TEGs, whereas a solid shadow mask is not desirable in large‐scale R2R manufacture. R2R processing is the most attractive means to scale up the manufacture of flexible thin‐film TEGs, and our previous study [ 26 ] has successfully achieved a flexography + evaporation approach to make in‐line patterns of electrodes for flexible TEGs. However, obstacles still exist to make flexography compatible with the sputtering of TE materials and to produce the uniform coating and accurate process control (because of multiple boats and power systems) for evaporation of functional materials (e.g., Bi 2 Te 3 TE materials).…”

Section: Introductionmentioning

confidence: 99%

Device Optimization and Large‐Scale Roll‐to‐Roll Manufacturability of Flexible Thin‐Film Thermoelectric Generators

et al. 2021

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The optimization of flexible thin-film thermoelectric generator suitable for large-area roll-toroll processing is investigated. The selection of suitable contact materials, in-line patterning of connections, and dimension of the thermoelectric strip are investigated. As a result, copper is selected for contacts because it possesses a similar performance to gold while being cheaper.Both in-series and in-parallel connected devices are found to work well and provide a voltagedominant and current-dominant power source, respectively. The Seebeck coefficient and internal resistance of a device are extracted from fits to the measured power data. The inparallel connected thermoelectric generator has a much smaller internal resistance and is thus suitable for wearable/portable devices with the small load resistance. A shorter and wider thermoelectric strip generates more power. To the authors' knowledge, this is the first study that experimentally proves a downward trend of power output with increasing the strip length.In addition, an industrially feasible/continuous process is proposed for large-scale manufacture of flexible thermoelectric generators, by roll-to-roll sputtering thermoelectric materials on polymer web, inkjet printing contacts, and segmenting using a laser. A segmented

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Section: Introductionmentioning

confidence: 99%

Device Optimization and Large‐Scale Roll‐to‐Roll Manufacturability of Flexible Thin‐Film Thermoelectric Generators

et al. 2021

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“…In addition, thin metal films are typically grown using thermal evaporation which is not a mature technology for large‐scale solar cell manufacturing. [ 94,95 ]…”

Section: Strategies and Progressmentioning

confidence: 99%

Progress in Semitransparent Organic Solar Cells

2021

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Opaque and semitransparent organic solar cells (ST‐OSCs) have made tremendous progress in recent years. Efficiencies over 18% and 13% have been demonstrated for opaque ST‐OSCs, respectively. OSCs do not contain unfavorable elements such as lead, which makes them available for broader potential applications when compared with other lead‐contained thin‐film solar cells. There has also been tremendous progress in the ST‐OSCs, which makes them extremely appealing for promising emerging applications such as building‐integrated photovoltaics. Herein, a progress review in the field is presented for helping the researchers better understand ST‐OSCs and further realize their potentials. Recent strategies in ST‐OSCs based on three perspectives are summarized, including electrode engineering, active layer engineering, and device engineering. A wide range of applications where ST‐OSCs can be used is discussed and challenges for future developments of ST‐OSCs are pointed out. Finally, the outlook for promising future research directions is presented.

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“…The most widely used techniques in the research areas are based on various physical/chemical deposition methods such as spray coatings, electrochemical/electrophoretic deposition, physical/chemical vapor deposition, sol-gel synthesis, spin-coatings, atomic layer deposition, and layer-by-layer deposition. However, in industry, highspeed roll-to-roll processing [17,18] is used to make energy storage devices. This method consists of multiple steps including chemical deposition, electrode rolling, cutting, making a cell assembly with separator, filling the electrolyte, and packaging [1].…”

Section: D Printed Electrodes and Their Propertiesmentioning

confidence: 99%

Advances in 3D Printing for Electrochemical Energy Storage Systems

Menon

Khan²,

Balakrishnan

et al. 2021

J. Mater. Sci. Technol. Res.

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In the current scenario, energy generation is relied on the portable gadgets with more efficiency paving a way for new versatile and smart techniques for device fabrication. 3D printing is one of the most adaptable fabrication techniques based on designed architecture. The fabrication of 3D printed energy storage devices minimizes the manual labor enhancing the perfection of fabrication and reducing the risk of hazards. The perfection in fabrication technique enhances the performance of the device. The idea has been built upon by industry as well as academic research to print a variety of battery components such as cathode, anode, separator, etc. The main attraction of 3D printing is its cost-efficiency. There are tremendous savings in not having to manufacture battery cells separately and then assemble them into modules. This review highlights recent and important advances made in 3D printing of energy storage devices. The present review explains the common 3D printing techniques that have been used for the printing of electrode materials, separators, battery casings, etc. Also highlights the challenges present in the technique during the energy storage device fabrication in order to overcome the same to develop the process of 3D printing of the batteries to have comparable performance to, or even better performance than, conventional batteries.

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Roll-to-roll patterning of Al/Cu/Ag electrodes on flexible poly(ethylene terephthalate) by oil masking: a comparison of thermal evaporation and magnetron sputtering

Cited by 21 publications

References 40 publications

Device Optimization and Large‐Scale Roll‐to‐Roll Manufacturability of Flexible Thin‐Film Thermoelectric Generators

Device Optimization and Large‐Scale Roll‐to‐Roll Manufacturability of Flexible Thin‐Film Thermoelectric Generators

Progress in Semitransparent Organic Solar Cells

Advances in 3D Printing for Electrochemical Energy Storage Systems

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