Innovative HJT-Perovskite Cells Set New Standards for Solar

Risen Energy Achieves Landmark Efficiency in Solar Technology

Risen Energy has reached a remarkable milestone in solar technology by achieving an impressive 30.99% efficiency with its HJT (Heterojunction Technology) in a tandem structure with perovskite cells. This innovative approach not only showcases Risen's commitment to technological advancement but also contributes significantly to the global transition towards greener energy solutions.

The Significance of Tandem Solar Cells

Tandem solar cells utilize different materials with unique bandgap energies, allowing them to absorb a broader spectrum of sunlight. The upper layer of these cells, often comprising perovskite materials, captures high-energy short-wavelength light such as blue and ultraviolet light. In contrast, the lower layer, typically made of silicon, is designed to absorb low-energy longer wavelengths, such as red and infrared light. This innovative design minimizes light energy waste, enhancing overall efficiency.

Potential of Tandem Structures

While single-junction solar cells have a theoretical efficiency limit of about 33% (according to the Shockley-Queisser limit), the incorporation of tandem structures can potentially raise this ceiling to above 44%. This extraordinary potential opens new avenues for efficiency gains in solar energy conversion.

Why HJT-Perovskite Tandem Cells Are Revolutionary

Risen Energy's advancements in HJT-perovskite tandem cells are propelling the solar industry into a new realm of possibilities for several reasons:

• Top Efficiency and Reduced Degradation

  HJT cells are already renowned for their superior efficiency and lower degradation rates under aging and varying temperatures. This robustness makes them an ideal foundation for tandem cell integration.

• Enhanced Electrical Connectivity

  Utilizing Indium Tin Oxide (ITO) as a transparent conductive layer, HJT cells offer improved electrical connectivity compared to other technologies like BC, TOPCon, and PERC, which depend on insulating layers. This innovation streamlines the connections across stacked cells, enhancing total performance.

• Eco-Friendly Production Methods

  HJT solar cells are manufactured with a significantly lower carbon footprint, utilizing less material and minimizing energy and water requirements during production. This eco-conscious approach underscores their position as a sustainable photovoltaic technology.

• Fully Compatible Production Lines

  Risen Energy’s existing HJT production lines are designed to integrate seamlessly with perovskite cell manufacturing equipment. This capability enables the production of both perovskite and silicon-based cells on the same line without any modifications, protecting prior investments while optimizing operational efficiency.

• Advancements in Module Technology

  Risen has developed the innovative Hyper-Link low-temperature stress-free interconnection technology, which overcomes traditional module encapsulation limitations. This technology facilitates low-temperature processing that respects the thermal sensitivity of perovskite materials, ensuring enhanced structural integrity of thin-film designs and achieving series connection efficiency exceeding 28%.

Challenges Facing Perovskite Technology

Despite their advantages, perovskite solar cells encounter significant hurdles:

• Durability Concerns

  Current perovskite solutions tend to degrade quickly under UV exposure and high humidity, leading to a lifespan of less than 5 years when compared to over 30 years for silicon cells. Risen is actively researching nano-encapsulation and self-healing materials to address these durability issues.

• Complex Manufacturing Processes

  Ensuring uniformity of perovskite films at scale requires advanced and intricate deposition techniques, presenting a challenge for widespread manufacturing.

The Future Landscape of Risen Energy

Risen Energy is already making strides in translating its laboratory successes into real-world applications:

• First 730W HJT Module Shipment

  Recently, Risen completed a significant 100MW shipment of HJT Hyper-ion Pro 730W modules to Spain, marking the world's first deployment of a 730W+ project in January 2025.

• 2025 Vision

  Risen's roadmap includes enhancing module power to 740W with cell efficiency targets reaching 26.8%, alongside the production of 800W prototypes in tandem cells.

• Long-Term Aspirations

  Looking ahead to 2027, Risen aims to launch 850W+ perovskite tandem modules with an impressive degradation rate of less than 0.25% annually.

Frequently Asked Questions

What efficiency did Risen Energy achieve?

Risen Energy achieved an impressive efficiency of 30.99% with its HJT-perovskite tandem solar cells.

What are the advantages of tandem solar cells?

Tandem solar cells allow for enhanced light absorption due to their use of different materials, increasing overall efficiency and minimizing waste.

What challenges do perovskite cells face?

Perovskite cells currently struggle with durability and rapid degradation under UV exposure and humidity.

What is Risen Energy's vision for the future?

Risen Energy aims to further enhance solar module efficiency and production capabilities, focusing on sustainable practices and long-term durability.

How does Risen Energy contribute to environmental sustainability?

By employing eco-friendly manufacturing processes and creating more efficient solar technologies, Risen Energy helps reduce the carbon footprint associated with solar energy production.

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