The focus is on specially developed solar fluxes for TOPCon and heterojunction solar cells, cleaning media for solar modules and solders for reliable connections in module production.
These solutions support Emil Otto central process steps in solar cell and solar module production. The aim is to make production more efficient, reproducible and sustainable and to ensure the long-term performance of photovoltaic systems.
Consumables for modern solar cell and module production
The production of modern photovoltaic modules places high demands on the materials used. Particularly with innovative cell technologies such as TOPCon and heterojunction, soldering processes must be precise, gentle on the material and reliable. This is precisely where Emil Otto with a portfolio specifically geared towards the solar industry.
The solutions for the photovoltaic industry include
- Solar flux for stable and durable solder connections
- Solar flux gels for precise applications in sensitive manufacturing processes
- Cleaning media to ensure efficiency and module performance
- Tubular solders for reliable connections in solar module production
The products are designed to meet the typical requirements of industrial production and support high process stability with gentle processing of sensitive solar cells.
Solar flux for TOPCon and heterojunction solar cells
A particular focus is on solar fluxes that have been specially developed for the production and connection of TOPCon and heterojunction solar cells. These cell types are particularly efficient, but react sensitively to thermal stress during production.
The fluxes from Emil Otto are alcohol-based and dry significantly faster than conventionally used products. This means that the preheating temperature in the process can be reduced. For TOPCon and heterojunction cells, this means a lower thermal load, which can have a positive effect on the longevity of the cells. At the same time, energy is saved during production.
„The use of state-of-the-art fluxes is particularly important in the production of these two cell types. Our alcohol-based FD variants dry 10 times faster than conventionally used fluxes. As a result, a lower preheating temperature is required, which means that the TOPCon and heterojunction cells are exposed to less thermal stress. This improves the longevity of the solar cells and saves energy in their production.“
No Clean flux for clean and reproducible processes
With the solar fluxes from Emil Otto are no-clean fluxes that leave no sticky residue, which ensures clean processing.
„Ultimately, this also protects the stringer modules, as less flux residue remains in them.“
Process tests with leading machine builders from the solar cell manufacturing industry confirm the reliability and quality of the flux products from Emil Otto.
„Our fluxes therefore enable efficient, reliable and reproducible production and high-quality solar cells as the final product.“
You can find an overview of our portfolio of solar fluxes here:
Cleaning media for solar modules and photovoltaic systems
In addition to production, cleaning also plays a decisive role in the performance of solar cells and photovoltaic systems. Emil Otto offers specialized cleaning media that reliably remove soiling such as salt deposits, limescale or organic residues from solar modules, thus ensuring long-term efficiency.
Biodegradable cleaning products such as EO-SMC-001 to -004 SOLAR-MODULE-CLEANER have been specially developed for the effective cleaning of solar modules in nature. Thanks to their excellent wettability and flexibility, the cleaners from Emil Otto effortlessly by spraying, brushing or using automatic cleaning systems. All solar cleaners remove residues easily and reliably, ensuring that the efficiency of solar systems is not impaired. Even in demanding environments, such as agricultural photovoltaic parks, the cleaning media support reliable and effective cleaning. The cleaning products therefore not only facilitate the maintenance of solar systems, but also ensure long-lasting cleanliness without leaving harmful residues.
„As a manufacturer of consumables for the solar industry, we help to increase the quality and efficiency of photovoltaic systems. The products we use support reliable connection technology and the sustainable use of modules. These are key factors for the global energy transition.“
Find out more about our cleaning media for solar modules and photovoltaic systems:
Emil Otto visit us at Intersolar Europe 2026
By participating in Intersolar Europe 2026, we are offering Emil Otto trade visitors the opportunity to find out about the latest developments in solar production and discuss individual requirements. The personal exchange at stand 609 in hall A2 of Messe München will focus on topics such as process optimization, material selection and sustainable manufacturing solutions.
Further information on our participation in Intersolar Europe 2026 can be found here: