A brief overview of HJT Next Gen Solar Panels
HJT is an abbreviation for solar cells made using heterojunction technology – the next gen solar panel. A Japanese company named Sanyo was the first to develop these in the 1980s. Panasonic has recently acquired this technology through a purchase. Unlike PERC solar cells, HJT is more straightforward to manufacture since it requires fewer heating processes. Additionally, HJT technology offers significant cost advantages by simplifying the solar cell manufacturing process and reducing processing expenses. As a result, it serves as a fantastic alternative to conventional solar cell technology.
Formation of HJT Cells
Heterojunction (HJT) technology combines conventional wafer-based solar cells with thin-film solar cell designs. It enhances the durability of solar panels and boosts their energy production efficiency. HJT technology is attractive due to its efficient sunlight absorption and cell protection capabilities. It can function with several kinds of silicon wafers, yet it primarily focuses on n-type silicon wafers. Applying HJT technology can raise the quality and efficiency of solar panels, playing a pivotal role in addressing the energy crisis.
HJT, or Heterojunction with Intrinsic Thin Layer, represents a solar cell technology that leverages the strengths of crystalline silicon alongside those of thin-film solar cells. It is recognized for its efficient performance and ability to remain calm, making it an excellent option for converting sunlight into energy. Here’s a clear and concise explanation of the manufacturing process of an HJT solar cell.
- Substrate: A solar cell’s construction starts with a substrate commonly made from crystalline silicon. The substrate provides foundational support and serves as the underlying layer for the materials above it.
- N-Type Layer: A thin coating of negative-type amorphous silicon is introduced to the underlying material. This layer functions as the component of the solar cell responsible for releasing electrons and allowing them to move.
- Intrinsic Layer: A coat of pure, undoped amorphous silicon is applied over the n-type layer. This inner layer captures sunlight and generates pairs of electrons and holes.
- P-Type Layer: A thin film of p-type (positive-type) amorphous silicon is deposited on top of the intrinsic layer. This layer aids in accumulating holes and serves as the underlying surface.
- Transparent Conductive Oxide (TCO) Layer: A transparent conductive layer, such as indium tin oxide (ITO) or fluorine-doped tin oxide (FTO), is applied over the p-type layer. This layer permits light to enter while facilitating the movement of electricity from the generated charge carriers.
- Front Metal Contacts: Metal fragments, generally silver or aluminium, are introduced into the TCO layer to gather electrons from sunlight exposure. These pathways facilitate the exit of electricity from the solar cell.
- Back Metal Contacts: Similarly, metal connectors are affixed to the rear of the material to collect the openings created by sunlight. These connections complete the circuit, enabling the flow of electricity.
Distinction between HJT and N-Type / PERC
Heterojunction cells differ from standard crystalline solar cells, like PERC and N-Type, as they blend two different materials. Conventional solar cells feature uniform layers, whereas heterojunction cells utilize a unique crystalline silicon foundation combined with an amorphous silicon layer with a distinct electrical charge. The bond is created between crystal and non-crystal silicon substances in the context of HJT silicon. Applying heterojunction cells enhances solar panels’ efficiency, stability, power output, and cost-effectiveness. Consequently, this promising cell technology suggests a positive future for solar energy, attributed to its remarkable features.
HJT solar panels deliver 700W, making them ideal for large-scale energy initiatives.
Investing in powerful 700W HJT (Heterojunction with Intrinsic Thin-layer) solar panels for sizable projects can yield various advantages, presenting them as an excellent selection. Here are several reasons why they might be considered the top choice:
- HJT solar panels convert sunlight into electricity more efficiently than standard solar panels. They combine crystal silicon with thin-film technology to minimize energy loss and maximize the sun’s conversion into electricity. This enhanced efficiency enables you to generate more significant amounts of electricity in a limited area, thereby optimizing the performance of your large solar project.
- HJT panels typically exhibit improved efficiency in hot weather, retaining more power than standard solar panels. Their performance and dependability are enhanced in warm climates, a key factor for significant initiatives in sun-drenched locations.
- HJT panels perform more effectively under low-light conditions, such as overcast or dreary weather. This feature is particularly beneficial for extensive energy initiatives, as it ensures consistent and reliable energy generation throughout the year, regardless of fluctuations in weather conditions.
- HJT solar panels are designed for longevity and robustness. Prominent brands generally provide more extensive product warranties, which indicates that their panels are designed to withstand harsh weather conditions and perform reliably for an extended period. This reliability is vital for substantial projects, as sustained dependability is essential for profitability.
- HJT panels, boasting a capacity of 700W, can generate substantial amounts of electricity from each unit. This approach can reduce the number of panels required for a significant energy initiative, resulting in lower installation and maintenance costs while also requiring less land.
The reliability, cost-effectiveness, and credibility of HJT technology
When evaluating various kinds of solar panels, it’s crucial to consider their advantages and challenges. One of the significant challenges facing heterojunction (HJT) panels is the widespread use of PERC technology to produce solar panels. HJT panels are robust and highly durable and perform efficiently, making them excellent options for solar energy generation. While HJT panels exhibit slightly higher efficiency than PERC panels, researchers continue to focus on producing larger wafers for HJT technology. While HJT panels are a relatively recent development, they have made remarkable strides in enhancing their reliability and durability over time, mainly due to solid edge seals and protective coatings. While HJT panels may have a higher initial cost, their energy output is more significant, and their efficiency remains high for over 30 years, making them a worthwhile investment.