Buying Guide Of HJT Solar Cell

Heterojunction Technology (HJT) is an advanced N-type bifacial solar cell technology. It utilizes N-type monocrystalline silicon as a base, onto which silicon-based thin films with different properties are deposited on both the front and rear surfaces, along with transparent conductive films.

By combining the advantages of both crystalline silicon and amorphous silicon thin-film technologies, HJT offers superior photoabsorption, passivation, and overall efficiency. This technology enables solar panels to achieve higher conversion rates and power output, representing the future direction of solar cell platform development.

Why Choose HJT Solar Cell Panels ?

1. High Conversion Efficiency:

HJT technology differs from traditional solar cells, like those using PERC (Passivated Emitter and Rear Cell) technology, which rely on a homojunction made of crystalline silicon for the PN junction. Instead, HJT combines two unique semiconductor materials, enhancing the conversion of sunlight into electricity.

While PERC technology boasts an average efficiency of over 22%, HJT panels surpass this with an average efficiency exceeding 22.5%. Additionally, HJT solar cells feature bifaciality of over 93%, meaning they generate electricity from both sides of the module. For example, the Swiss company Ecosolifer has developed a commercial bifacial HJT cell with an impressive 24.1% efficiency.

2. Fewer Production Steps:

HJT solar panels are manufactured with fewer process stages compared to conventional PERC solar panels, leading to a more streamlined production process. While PERC technology requires around 13 steps to produce solar photovoltaic modules, HJT panels need only 8. This reduction in production stages not only simplifies manufacturing but also makes HJT technology more cost-effective, especially as the price of necessary equipment continues to decline. This trend is promising for the future development and affordability of solar energy.

3. Low Temperature Coefficient:

HJT solar Cell have a lower temperature coefficient compared to conventional crystalline silicon cells, making them more efficient at higher temperatures. Even at temperatures below 200°C, HJT panels maintain an efficiency of over 23%.

With a low temperature coefficient of -0.2%/K, these panels can sustain high efficiency and energy output in warmer conditions, reducing overall system costs. This allows HJT solar panels to perform optimally in hot climates, making them ideal for large-scale power generation with consistently high performance.

4. Long Service Life:

HJT solar Cell are known for their durability, offering a longer lifespan and lower maintenance costs. While the typical lifespan of most solar panels is around 25 years, HJT panels can last up to 30 years under normal conditions.

This extended life is due to the protective properties of the amorphous silicon layer, which reduces degradation and prevents the occurrence of the Potential Induced Degradation (PID) effect, ensuring longer-lasting performance for HJT solar cells.

What is the Development Trend of HJT Technology?

While PERC technology remains the most popular and widely adopted solar cell option due to its simplicity and ease of upgrading existing production lines, HJT technology requires an entirely new set of production tools. However, HJT solar panels are far more efficient and advanced compared to PERC-based panels.

Due to their high power generation efficiency, HJT panels are attracting growing interest from cell manufacturers and suppliers. The future development of HJT technology will largely depend on market demand and customer preferences.

HJT technology is revolutionizing the solar industry by improving energy output and efficiency. By combining layers of amorphous and crystalline silicon, HJT panels overcome the limitations of conventional solar cells and open up new possibilities for diverse solar energy applications.

Why choose us

Beijing Shan Hu International Technology Co.,Ltd. is a professional enterprise involved in manufacturing and marketing the best quality solar panels and provide solutions for a wide range and variety of customers home and abroad. It is located in Beijing Economic-Technological Development Area, China.

The company was established in 2020, now over 80% of our commercial managers and engineers have many years of solution experiences. At present, the company's business scope covers multiple countries and regions including China, Europe, America, Southeast Asia, and Africa. Beijing Shanhu International has always adhered to the mission of promoting the energy revolution process with photovoltaic technology and benefiting all mankind with solar energy. Aiming to create a series of digital comprehensive solutions for green energy, including green buildings, green travel, green industrialization, and smart home energy. We hope that through our exploration and efforts, more people can enjoy the value of sunshine and create a green energy world with the radiance of the sun.