Highly efficient n-type TOPCon cells - innovation for maximum energy efficiency

The future of photovoltaics lies in high-efficiency technologies, and n-type TOPCon cells are among the frontrunners. This revolutionary cell technology is based on the further development of silicon wafers and combines innovative materials with advanced production processes. The result: outstanding efficiency, improved longevity and impressive performance even under difficult conditions.

Manufacturers with n-type TOPCon technology

Leading manufacturers rely on n-type TOPCon cells to maximize the efficiency of their modules. LONGi Solar achieves efficiencies of up to 22.5 % and a degradation rate of less than 1 % in the first year with the Hi-MO 7 series. Trina Solar impresses with the Vertex S series, which offers up to 450 W output and efficiencies of up to 22.5 %. JA Solar relies on n-type modules, which deliver high yields with low solar irradiation and have an annual degradation rate of less than 0.4 %.

What are n-type TOPCon cells?

n-type TOPCon cells are an advanced technology in photovoltaics that improves the efficiency of solar cells through a special passivation of the charge carriers. The term "TOPCon" stands for Tunnel Oxide Passivated Contact, which describes the structure of the cells: an ultra-thin oxide layer is placed between the silicon and the back contact to increase performance. In contrast to conventional p-type solar cells, where efficiency can be affected by various environmental influences and production processes, n-type cells offer a number of advantages that make them a forward-looking solution for solar installations.

Essentially, n-type TOPCon cells allow less recombination of electrons and holes, thereby improving energy yield. They

Advantages of n-type TOPCon cells:

• Higher efficiency: thanks to the special technology, TOPCon solar cells achieve efficiencies of up to 25 % and more. This means more energy from the same surface area.
• Better temperature stability: Compared to other cell technologies, n-type cells remain stable and efficient even at high outside temperatures.
• Longer service life: Due to the reduction of light-induced degradation (LID) and higher resistance to environmental influences, n-type cells retain their efficiency over a longer period of time.
• Optimum performance in low light: n-type TOPCon cells also perform excellently in diffuse light conditions or partial shade, making them suitable for various geographical regions.

Advantages for installers and end customers

TOPCon solar cells not only offer a higher energy yield, but also a long-term investment in sustainability. They are particularly beneficial for residential, commercial and industrial solar installations where a long lifespan and high energy production are required.

• Higher yields: The high efficiency and special cell structure produce more energy per square meter.
• Sustainability: Due to the longer service life of the modules, the use of n-type TOPCon cells helps to reduce the carbon footprint.
• Innovative manufacturers: Leading manufacturers such as JA Solar, Jinko Solar, Trina Solar and LONGi Solar rely on TOPCon cells to deliver high-performance modules.

Popular suppliers of n-type TOPCon modules on SolarTraders

At SolarTraders you will find a large selection of solar modules with TOPCon technology from leading manufacturers such as:

• JA Solar
• Jinko Solar
• Trina Solar
• LONGi Solar

Our platform allows you to quickly compare offers from these top brands and select the best module for your requirements.

N-type TOPCon: Technology and advantages in detail

Material
n-type silicon: TOPCon cells use n-type silicon doped with phosphorus. This material is more resistant to defects and degradation compared to p-type silicon.

Technology
TOPCon technology uses an ultra-thin tunnel oxide layer and a passivated back-contact structure that significantly increases efficiency. This technology minimizes losses due to recombination and maximizes the mobility of the charge carriers, thereby increasing the energy yield.

Efficiency
TOPCon cells achieve an efficiency of 22-24 % or more. They are particularly efficient in low light and at high temperatures, making them suitable for diverse geographical environments.

Degradation
n-type cells have almost no light-induced degradation (LID) as they are boron-free. This results in a more stable performance over the entire lifetime of the cells.

Costs
The production of n-type TOPCon cells is more expensive than conventional PERC cells, as the production process is more complex and more expensive starting material is required.

Durability
TOPCon cells offer a longer lifespan and stable performance over 25 to 30 years.

Learn more about bifacial modules and all black modules

Bifacial modules use the reflected light from surfaces such as soil or water to generate additional energy. This technology increases the overall energy yield. All black modules, on the other hand, are characterized by their elegant design, as they offer a uniform, dark color and can be integrated particularly well into aesthetically demanding projects.

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