How Does HJT Technology Work?

HJT solar panels are built using a unique three-layer structure of photovoltaic materials. The top layer consists of amorphous silicon, which captures sunlight before it reaches the monocrystalline silicon layer beneath. The monocrystalline silicon middle layer plays the main role in converting sunlight into electricity with high efficiency. Finally, the bottom layer of amorphous thin-film silicon captures any remaining light that passes through the first two layers.

By combining these technologies in a single cell, HJT photovoltaic modules can harvest significantly more solar energy than panels using either technology alone, reaching conversion efficiencies of 25% or higher. This design is a key reason why HJT solar panels are increasingly favored in modern solar energy systems, including rooftop, ground-mounted, and BESS container applications.

Advantages of HJT Solar Panels

1. High Efficiency Performance
   The core of HJT solar panels lies in their superior cell design. By adopting high-efficiency heterojunction solar cells, these panels can achieve more than 21.5% module efficiency, significantly surpassing traditional modules. The use of N-type wafers ensures that there is no LID (Light Induced Degradation) caused by B-O pairs, maintaining long-term output performance.

2. Leading Half-cut HJT Cell Technology
   The innovative half-cut HJT cell technology enhances the reliability and mechanical strength of the modules, while improving shading tolerance and reducing energy loss. This leads to a more stable and consistent energy yield for various solar energy systems.

3. Excellent Temperature Coefficient
   One of the standout features of HJT solar panels is their superior temperature performance. With a feed temperature coefficient as low as -0.24%, the modules deliver a stable yield even in high-temperature environments—making them ideal for commercial solar systems and large-scale solar farms.

4. Bifacial Power Generation
   Thanks to their 85% double-sided factor, HJT photovoltaic modules can capture sunlight from both the front and back sides. This bifacial capability significantly increases the total energy output, especially in ground-mounted and rooftop solar system applications where reflected light contributes to higher production.

5. Excellent PID Resistance
   HJT solar panels offer outstanding Potential Induced Degradation (PID) resistance, ensuring long-term electrical stability and reducing the risk of power loss over time. This makes them an ideal choice for off-grid solar systems, hybrid solar systems, and grid-connected projects that demand high reliability.

Applications in Solar Energy Systems

Whether deployed in rooftop solar systems, ground-mounted solar farms, or BESS container solutions, HJT technology guarantees unmatched performance and efficiency. The technology’s adaptability supports a wide range of solar energy system designs, meeting the energy needs of residential, commercial, and industrial sectors.

Conclusion

In summary, HJT solar panels offer exceptional advantages in efficiency, stability, and durability. With high module efficiency, low temperature coefficient, excellent PID resistance, and bifacial power gain, they are among the most advanced solutions available for any modern solar energy system. Choosing HJT means securing long-term energy production and reduced electricity costs for decades to come.