#China #Risen Energy #Ningbo #HJT Technology #Low Silver

Risen Energy's Strategy for Low Silver Content in HJT Technology

In recent discussions within the photovoltaic industry, the focus has shifted towards reducing costs associated with silver paste and innovating new materials. Risen Energy has taken a proactive approach by revising its technical white paper on HJT Hyper-ion products, emphasizing the development and application of low-silver metallization paste. This revision aims to rethink early strategic concepts, validate experimental results, and provide substantial insights to industry peers.

I. Forward-thinking and Systematic Planning — Beyond Simple Substitution

Faced with limited silver supplies and price volatility, Risen Energy recognizes the urgent need to utilize affordable alternative metals for sustainable growth. This mirrors the past transition from gold interconnects in integrated circuits to copper. The company's approach has evolved from mere conceptual substitutes to systematic implementation strategies.

Comprehensive Material Selection

Risen Energy assessed potential candidate metals such as copper, aluminum, zinc, and nickel based on their electrical conductivity, global reserves, and market stability. Ultimately, copper emerged as the prime candidate due to its high conductivity (5.96×10^7 S/m), sufficient reserves, and cost-effectiveness.

Strategic Technological Path

While electroplating is a viable alternative that eliminates the need for silver altogether, Risen Energy opted for low-silver paste since it can coat inexpensive metal substrates, ensuring compatibility with existing production lines and allowing for rapid scalability.

Rigorous Reliability Testing

The white paper illustrates that modules utilizing low-silver paste exhibit excellent degradation rates post exposure to damp heat (DH) and thermal cycling (TC) tests, demonstrating multi-fold performance levels. In some scenarios, their performance even outclassed that of modules which employed pure silver pastes, matching their power generation capabilities.

II. From Innovation to Industrialization — Pioneering Mass Production

Over the years, Risen Energy has established a stable framework for large-scale mass production of HJT products. As a result, the consumption of pure silver in Risen Energy's HJT cells has been reduced to just 3.9 milligrams per watt (mg/W) — a figure that places them at the forefront globally.

III. Reflections and Future Outlook — Progress Driven by Value

The review highlights three fundamental principles at the core of Risen Energy's strategy — an inherent synergy between HJT technology and low-silver materials. Low-temperature processing of HJT, bifacial structures, and superior passivation create a robust platform for safe and effective metallization innovations.

Cost Reduction as a Value Multiplier

The combination of optimizing materials with advanced manufacturing techniques allows Risen Energy to achieve a lower levelized cost of energy (LCOE) and improved return on investment (ROI), all without sacrificing reliability or output capacity.

Material Innovations as an Industry Catalyst

The shift towards reduced silver usage transcends mere cost savings; it represents a paradigm shift in photovoltaic technology and sustainability.

Risen Energy thanks its clients and partners for their ongoing support and trust in its HJT technology. The company remains committed to its original goal of reducing costs while enhancing efficiency, promoting the industrialization of HJT technology, and contributing to the global energy transition.