Norbert Willenbacher | Karlsruhe Institute of Technology: Can capillary suspensions truly revolutionize the formulation of conductive materials, or are they merely a niche solution?
00:03:09 - 00:03:31
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Can capillary suspensions truly revolutionize the formulation of conductive materials, or are they merely a niche solution?
Capillary suspensions are ternary fluid-fluid-solid systems where the addition of a trace amount of a secondary fluid dramatically alters the suspension's properties. Unlike binary systems where particles are simply suspended in a liquid or polymer, capillary suspensions leverage the secondary fluid to induce particle network formation.
This network formation leads to a significant shift in the percolation threshold, enabling high electrical conductivity at lower filler content. The transition from a milk-like texture to a cheese-like texture upon adding the secondary fluid visually demonstrates the profound impact on the material's microstructure and rheological behavior.
* The definition and composition of capillary suspensions.
* The mechanism of particle network formation.
* The impact on percolation threshold and conductivity.
#CapillarySuspensions, #ConductiveMaterials, #ParticleNetworkFormation, #PercolationThreshold, #SemiconductorManufacturing, #PrintedElectronics
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New Materials for Metallization and Interconnection of Perovskite Cells: Low-Temperature Processing & Reduced Silver Consumption
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00:00:15 - 00:00:23
How critical is low-temperature processing for the widespread adoption of perovskite solar cells?
How critical is low-temperature processing for the widespread adoption of perovskite solar cells?
The transition from record-breaking cell efficiencies to large-scale module production necessitates low-temperature metalization and interconnection concepts. This is particularly crucial for perovskite cells due to their inherent temperature sensitivity.
Achieving module efficiencies greater than 25% with degradation rates below 1% over 25 years demands innovative approaches. These approaches must be compatible with the delicate nature of perovskite materials, making low-temperature processing a key enabler for commercial viability.
* The need for a shift from efficiency records to manufacturable modules.
* The importance of low-temperature processing for perovskite stability.
* The target performance metrics for perovskite modules.
#LowTemperatureProcessing, #PerovskiteSolarCells, #ModuleCommercialization, #PerovskiteStability, #Photovoltaics, #RenewableEnergy
00:08:13 - 00:08:20
Given the established reliability of soldering, what specific advantages do ECAs offer for interconnecting perovskite-silicon tandem solar cells?
Given the established reliability of soldering, what specific advantages do ECAs offer for interconnecting perovskite-silicon tandem solar cells?
While soldering remains a cheap, reliable, and well-established interconnection technology, it typically requires higher processing temperatures and results in brittle connections. Electrically Conductive Adhesives (ECAs), on the other hand, offer the potential for softer, more elastic interconnections.
This elasticity can be particularly beneficial for perovskite-silicon tandem solar cells, as it can buffer thermo-mechanical stresses that might otherwise lead to device degradation. The ability of ECAs to accommodate these stresses makes them a compelling alternative to soldering in tandem cell applications.
* The limitations of soldering in the context of perovskite cells.
* The benefits of ECAs in terms of elasticity and stress buffering.
* The specific application of ECAs in perovskite-silicon tandem cells.
#ECAs, #PerovskiteSiliconTandem, #SolarCellInterconnects, #ThermoMechanicalStress, #Photovoltaics, #RenewableEnergy