Thomas Osterberg | Epishine: How far can we push the power density limits of indoor organic photovoltaics?
08:40 - 09:42
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Summary of the clip:
How can organic photovoltaics overcome the efficiency bottlenecks of low-light energy harvesting to power the next generation of autonomous IoT devices?
The commercial viability of indoor energy harvesting hinges on optimizing organic photovoltaics (OPV) for low-light environments. By tailoring the active layer materials to absorb ambient artificial light spectra, these specialized solar cells can bypass the limitations of traditional silicon. Establishing a robust, standardized supply chain around this technology is critical to transitioning these high-performance organic formulations from pilot lines to high-volume industrial manufacturing.
Recent material optimizations are already yielding immediate dividends in device performance. By refining the donor-acceptor morphology and reducing non-radiative recombination losses, next-generation OPV cells are achieving a performance boost of approximately 10%. This optimization pushes current density outputs to around 24 microamperes per square centimeter, establishing a new benchmark for near-term commercial deployments in early 2025.
Collaborative research within specialized consortia is unlocking even greater performance thresholds through advanced material selection. By identifying and integrating novel organic semiconductor candidates, researchers aim to squeeze significantly more power from the OPV architecture. This pathway targets a massive 60% increase in power output, driving current densities up to 35 microamperes per square centimeter to enable highly efficient, self-sustaining electronic systems.
In this short video, you can learn:
* The strategic importance of establishing a dedicated supply chain for organic photovoltaics (OPV) in low-light energy harvesting.
* The imminent performance gains of approximately 10% reaching the market in Q1 2025.
* The development roadmap to increase OPV power output by 60% using advanced candidate materials.
π **Clip Abstract** The speaker discusses the establishment of an organic photovoltaics (OPV) supply chain for low-light energy harvesting applications. He highlights an imminent 10% performance boost to 24 microamperes per square centimeter in Q1 2025, alongside a collaborative roadmap to increase power output by 60% to reach 35 microamperes per square centimeter.
π€ Speaker: Thomas Osterberg
π’ Company: Epishine
π
Event: Printed Electronics Innovation Day 2024
π Location: TechBlick | Online Platform
π Learn more at the next TechBlick event: https://www.techblick.com
#OrganicPhotovoltaics, #IndoorEnergyHarvesting, #OrganicSemiconductors, #IndoorOPV, #PrintedElectronics, #SelfPoweredIoT
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04:01 - 05:51
Can we truly build battery-free IoT devices without complex power management redesigns?
Can we truly build battery-free IoT devices without complex power management redesigns?
Designing a light-powered IoT device is far more complex than simply swapping a battery for an indoor solar cell. To successfully harvest ambient light, hardware engineers must orchestrate a complex micro-grid consisting of power management ICs (PMICs), voltage inverters, mechanical integration fixtures, cabling, and localized energy storage or buffering solutions.
To streamline this integration, Epishine co-developed a pre-packaged "self-charging battery" platform with a major Japanese battery manufacturer. This hybrid module integrates the organic photovoltaic (OPV) harvester, power management circuit, and localized storage into a single, mechanically complete unit operating at a nominal working voltage of 2.5V.
By abstracting away the complexities of low-light energy harvesting and power management, system integrators can treat the hybrid energy harvester as a standard plug-and-play component. This enables rapid prototyping of self-powered environmental sensors and microcontrollers without requiring deep expertise in low-power electrical design.
In this short video, you can learn:
* The multi-component complexity of building a micro-grid for indoor energy harvesting systems.
* How the "self-charging battery" module consolidates OPV harvesters, PMICs, and storage.
* Typical indoor light energy harvesting yields and nominal 2.5V operating specifications.
π **Clip Abstract** This clip explores the complex system architecture required to replace traditional batteries with ambient light energy harvesters in IoT devices. It introduces Epishine's integrated, plug-and-play "self-charging battery" platform developed to simplify power management and mechanical integration for hardware engineers.
#OrganicPhotovoltaics, #IndoorEnergyHarvesting, #EnergyHarvestingPMIC, #HybridEnergyHarvester, #PrintedElectronics, #SelfPoweredIoT
11:10 - 12:33
Why does the materials science of flexible electronics rule out cellulose and favor PET substrates?
Why does the materials science of flexible electronics rule out cellulose and favor PET substrates?
Substrate selection for flexible organic photovoltaics (OPV) requires balancing mechanical flexibility, surface chemistry, and cost. While Polyimide (PI) offers high thermal stability, Polyethylene Terephthalate (PET) remains the optimal industrial choice due to its balance of mechanical properties, chemical passivity, and cost-effectiveness when paired with specialized surface primers.
Encapsulating these organic layers is highly critical, as organic semiconductors are notoriously sensitive to moisture and oxygen degradation. Epishine utilizes specialized vapor barrier films comprised of PET foils sputtered with highly dense, thin-film inorganic oxides to prevent environmental ingress and ensure device longevity.
Alternative green substrates like cellulose are chemically unfeasible for high-reliability organic electronics due to their highly hygroscopic nature. The moisture-absorbing properties of paper-based substrates directly conflict with the strict moisture-barrier requirements necessary to prevent active-layer degradation.
In this short video, you can learn:
* Why PET with specialized primers is selected over stiffer alternatives like Polyimide.
* The structure of thin-film vapor barriers using sputtered inorganic oxides on polymer foils.
* The critical material incompatibilities of highly hygroscopic cellulose substrates in organic electronics.
π **Clip Abstract** This clip discusses the material selection and encapsulation strategies critical to manufacturing robust, flexible organic photovoltaics. The speaker explains the advantages of PET substrates, the deployment of thin-film oxide vapor barriers, and the chemical limitations of cellulose for flexible electronics.
#OrganicPhotovoltaics, #PETSubstrates, #VaporBarrierFilms, #CelluloseSubstrates, #FlexibleElectronics, #PrintedElectronics