.jpg)
TOPCon (Tunnel Oxide Passivated Contact) technology is one of the most advanced solar cell technologies available today, designed to deliver high efficiency, reliability, and long-term performance. Building on traditional PERC technology, TOPCon introduces an ultra-thin tunnel oxide layer and a passivated contact structure that significantly reduce the electron recombination losses. This means more of the sunlight hitting the panel is converted into clean, usable energy. With its blend of high efficiency, low degradation, and excellent performance in both harsh conditions and low-light environments, TOPCon has rapidly become the preferred choice for residential rooftops, commercial buildings, and utility-scale solar farms aiming to maximize energy production from every square meter.
TCL Solar TOPCon panels offer significant benefits over PERC technology, through delivering more energy, higher efficiency, lower annual power degradation, better performance in high temperatures and low light, greater reliability, and more efficient bifacial production, leading to more power generation per square meter, better value over the long term, and excellent reliability for installations in harsh environments. With superior performance in all conditions, TCL Solar TOPCon sets a new benchmark for high-efficiency, future-proof solar technology.
The advantages of TCL Solar TOPCon panels include:
TOPCon cells in mass production can reach efficiencies of over 25%, a strong improvement over PERC technology. This results in higher power output and better energy yield for the same installation area.
TOPCon modules exhibit lower first-year degradation and slower long-term annual degradation, ensuring more consistent energy generation over the panel’s 30-year lifetime.
The thin oxide layer provides excellent protection against moisture, temperature fluctuations, and environmental stress, improving long-term reliability and reducing performance loss over time.
With better resistance to heat, TOPCon modules maintain higher efficiency in hot conditions. This is especially valuable in sunny regions or during peak summer months, where traditional panels may suffer larger efficiency drops.
TOPCon modules offer a higher bifaciality rate, enabling them to capture more reflected and diffuse light, which in turn boosts total energy yield—especially valuable in commercial and utility-scale installations.
Thanks to excellent passivation and reduced electron recombination, TOPCon panels perform better during early mornings, late afternoons, and cloudy days. This extends daily energy production and enhances overall system output.
TOPCon can be produced using existing PERC manufacturing lines, reducing the need for heavy capital investment and supporting widespread adoption without added cost burdens.