Maryam Bari | PINA Creation: How do you prevent water-based transport inks from destroying moisture-sensitive perovskite solar cells?
00:09:58.545 - 00:11:48.015
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How do you prevent water-based transport inks from destroying moisture-sensitive perovskite solar cells?
The integration of solution-processed transport layers in perovskite solar cells requires meticulous solvent orthogonal engineering. Because perovskite materials are highly sensitive to moisture and polar solvents, depositing a water-based transport layer directly on top of the active layer can cause immediate chemical degradation and device failure.
To navigate this compatibility challenge, device architecture dictates the solvent choice. A fully water-based tin oxide ink is highly suitable for n-i-p structures where it is coated directly onto the indium tin oxide (ITO) substrate before the perovskite deposition, whereas p-i-n (inverted) structures require alcohol-based transport inks to protect the underlying active perovskite film.
Furthermore, integrating novel interface materials requires careful device optimization; preliminary tests of these inks in perovskite stacks demonstrate highly comparable fill factors, open-circuit voltages (Voc), and short-circuit currents (Jsc) to reference materials. These early integration trials highlight the importance of tuning deposition parameters to achieve ideal interfacial contact and charge extraction.
In this short video, you can learn:
* Managing solvent orthogonality and moisture sensitivity during transport layer deposition on perovskites.
* Designing around device architectures (n-i-p vs. p-i-n) using water-based or alcohol-based inks.
* Analyzing preliminary device performance metrics and the pathway to interface optimization.
š **Clip Abstract** This technical Q&A session addresses the critical engineering challenges of solvent compatibility between transport inks and moisture-sensitive perovskite layers. It explains how selecting between water-based and alcohol-based formulations depends on the chosen device stack architecture.
#SolventOrthogonality, #PerovskiteSolarCells, #ChargeTransportInks, #TinOxideInks, #PrintedElectronics, #PerovskitePhotovoltaics
This is a highlight of the presentation:
Boosting Stability and Efficiency in Perovskite and Organic Solar Cells through Scalable Metal Oxide Nano Inks
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00:01:07.035 - 00:02:51.115
Why are traditional metal oxides failing the commercialization curve for flexible perovskite solar cells?
Can advanced metal oxide nano-dispersions finally bridge the gap between high-performance charge transport layers and low-temperature, large-scale printed electronics manufacturing?
The commercialization of perovskite solar cells and organic light-emitting diodes (OLEDs) hinges on optimizing their device stacks with efficient electron transport layers (ETLs) and hole transport layers (HTLs). These critical interfaces are essential for maximizing charge carrier extraction and boosting overall device efficiency. However, conventional materials for ETL and HTL fabrication present processing bottlenecks that limit integration into flexible electronics.
Traditional metal oxides used for charge transport require high-temperature sintering at 400 Ā°C to achieve the crystallization necessary to function. This thermal budget is incompatible with flexible, temperature-sensitive substrates and introduces energy-intensive manufacturing steps. While organic semiconducting alternatives offer high performance, they remain commercially unviable due to high synthesis costs, scaling limitations, and toxic processing solvents.
To resolve these trade-offs, advanced metal oxide nano-dispersion inks have been developed to deliver high-performance ETL and HTL compositions. These engineered liquid dispersions enable low-temperature deposition of functional metal oxide thin films without sacrificing charge carrier mobility. By eliminating high-temperature crystallization and toxic solvents, this ink technology provides a scalable, cost-effective pathway for fabricating solar cells and LEDs.
In this short video, you can learn:
* The critical role of electron and hole transport layers in optimizing charge carrier extraction for perovskite solar cells and OLEDs.
* The processing limitations of traditional metal oxides and organic semiconductors, including high sintering temperatures and toxic solvent usage.
* How advanced metal oxide nano-dispersion inks enable low-temperature, scalable fabrication of functional charge transport layers.
š **Clip Abstract** The speaker discusses the challenges of using traditional metal oxides and organic semiconductors as electron and hole transport layers in perovskite solar cells and OLEDs due to high sintering temperatures and scalability issues. She introduces advanced metal oxide nano-dispersion inks as a low-temperature, cost-effective solution for fabricating these critical functional layers.
š¤ Speaker: Maryam Bari
š¢ Company: PINA Creation
š
Event: Perovskite Connect 2025
š Location: Estrel Congress Centre, Berlin (Co-located with TechBlick's Future of Electronics RESHAPED show)
š Learn more at the next TechBlick event: https://www.techblick.com
#FlexiblePerovskites, #ChargeTransportLayers, #MetalOxideNanoInks, #LowTemperatureProcessing, #PrintedElectronics, #RollToRollManufacturing
00:04:29.045 - 00:06:07.375
How do you achieve a 2-nanometer crystalline grain size in low-temperature solution-processed thin films?
How do you achieve a 2-nanometer crystalline grain size in low-temperature solution-processed thin films?
To function effectively as ultra-thin charge transport layers in solar cells and OLEDs, colloidal nano-inks must meet stringent electronic-grade requirements. PINA Creation's metal oxide inks are formulated using green solvents like ethanol, isopropyl alcohol (IPA), and water, ensuring compatibility with standard roll-to-roll, slot-die, and blade-coating manufacturing lines.
Crucial to industrial adoption is dispersion stability and shelf life; these formulations maintain their performance without aggregation or degradation for eight to twelve months. Minimizing nanoparticle size is critical to achieving dense, pinhole-free films that facilitate efficient charge extraction while maintaining high optical transparency.
Dynamic Light Scattering (DLS) data of their zinc oxide ink confirms a highly monodisperse nanoparticle size distribution below 10 nanometers in IPA. Transmission Electron Microscopy (TEM) characterization of the resulting thin films reveals exceptionally high crystallinity, with individual crystallite sizes measuring approximately 2 nanometers.
In this short video, you can learn:
* Key electronic-grade requirements and stability parameters for commercial-ready colloidal nano-inks.
* The utilization of eco-friendly solvent systems to enable roll-to-roll processing of transport layers.
* Technical characterization data verifying sub-10 nm particle sizes and 2 nm thin-film crystallites.
š **Clip Abstract** This clip details the chemical formulation, shelf-life, and physical properties of PINA Creation's electronic-grade metal oxide nano-inks. It presents key characterization data including DLS particle sizing and TEM imaging showing high-crystallinity 2 nm grain structures.
#ColloidalNanoInks, #MetalOxideInks, #SolutionProcessedThinFilms, #ChargeTransportLayers, #PrintedElectronics, #PerovskitePhotovoltaics