Silver-plated copper—how do we address the three concerns that customers worry about most?

2026-02-27 13:34

Following our last discussion on silver‑based and copper‑based pastes, we’ve received plenty of new feedback. In summary, it all comes down to three very practical concerns. Today, rather than diving into theory, we’ll focus on how we leverage the foundational “powder‑paste integration” capability to address each of these issues one by one.

First question: “Does it stick securely? Is the weld stable?” — The answer lies beneath our powder microscope.

Concern about interfacial adhesion essentially stems from concerns about the slurry and… Substrate The solder ribbon is like “two separate layers.” For the traditional “buy powder and mix slurry” model, this indeed poses a significant formulation challenge. But for us, it’s an issue we can address by… Source of powder structure It’s the problem we’ve started to solve.

Because “Integrated slurry and powder” , let us be not only “chefs” of formulations, but also “breeders” of raw materials. Our proprietary silver‑encapsulated copper powder, when viewed under an electron microscope, exhibits Uniform, dense core–shell structure . This means:

● Bonding with different substrates: We can, based on the substrate’s characteristics, (Silicon wafers, glass, flexible films, etc.) ， Targeted regulation of the powder’s surface state and morphology , enabling the slurry to achieve a dual, robust bond—transitioning from physical anchoring to chemical bonding.

● Connection to the welding ribbon or electrode: We can optimize the surface chemical state of the powder to ensure that it… During sintering or curing With the welding ribbon, Conductive layer It forms a tough and resilient interface that resists long-term thermal‑stress fatigue.

Stable performance begins with our precise control over the microstructure of every powder particle.

Second question: “Will prolonged outdoor exposure cause oxidation and failure?” — We employ a three‑layer protective system.

Copper oxidation is a widely recognized challenge. Our approach goes beyond simply applying a protective coating; instead, at the materials‑genetic level, we have engineered an end-to-end triple‑layered protection system:

1. Powder Gene Protection (Core Reinforcement): During the synthesis stage, on the surface of the copper core Perform passivation treatment to suppress its tendency to oxidize.

2. Inherent Structural Protection (Physical Barrier): A uniform, dense nano-silver shell surrounding the copper core effectively isolates the copper from the external environment, providing a physical barrier against oxygen.

3. Slurry System Protection (Active Removal): In an organic carrier By incorporating antioxidant components, the impact of oxygen on copper is mitigated during the sintering or curing stages, thereby further enhancing the material’s overall oxidation resistance.

This systematic protective approach, spanning from “powder” to “slurry,” enables our products to consistently pass stringent reliability tests such as DH2000 and TC600. Our confidence in reliability stems from the comprehensive, end-to-end technological closed-loop we’ve built from the ground up.

Third question: “Can my production line be used right away?” — The answer is a deeply integrated, turnkey service.

This is the most practical question. Customers’ production lines vary widely, and their application scenarios are equally diverse. With years of deep expertise in the photovoltaic sector, we leverage our “silver‑coated copper” technology, We are expanding our applications into a wide range of fields, including 3C electronics, semiconductors, and conductive films.

We firmly believe that the best slurry is not the one with the highest specifications, but rather… The one that best fits your existing equipment and processes. 。

Therefore, our answer is not to provide a list of standard products, but rather a set of deeply integrated solutions. “Turnkey” Service model. At its core, it remains “Integrated slurry and powder” The unique agility bestowed upon us:

1. “Ultra-fast response” from requirement to sample

When you submit a new requirement—whether it’s adjusting the silver content to address cost pressures, or… Adapting to a completely new substrate or process— The traditional approach requires a lengthy search and verification process for new powders within the external supply chain. In contrast, we leverage… Independent powder R&D capabilities , enabling simultaneous fine-tuning of powder formulations and formulation adaptation in the in-house laboratory, thereby significantly shortening the development cycle from “several weeks” to “A few days” , quickly provide targeted samples.

2. Close-Quarters Support from Sample to Mass Production

Providing samples is just the beginning. Our engineers will bring customized solutions directly to your production line and work side by side with your team to fine-tune the process. We can optimize not only the slurry formulation but also tailor our approach to the specific conditions on the shop floor. Optimize the intrinsic properties of the powder itself. , ensuring a “precise handshake” with your device.

3. Future-Oriented “Joint Development”

We consistently keep pace with the industry’s most cutting-edge technological advancements. Beyond the photovoltaic sector, we have already collaborated with… 3C electronics, semiconductors, conductive films, and other fields It has established joint development mechanisms with numerous leading enterprises and research institutions. For customers with clear cost-reduction goals and ambitious innovation aspirations, we are committed to becoming their most trusted “materials R&D partner,” co‑defining solutions tailored to… Next-generation applications The solution.

“Integrated slurry and powder” is not just a slogan for us. It represents a proven capability: no matter how unique your process or how innovative your application, we can deliver end-to-end solutions—from concept to mass production—with greater speed and precision. Deterministic support 。

Written at the end

Silver‑clad copper technology is expanding from photovoltaics to a broader arena. — 3C electronics, semiconductor packaging, conductive films —, Its maturity is inseparable from the close collaboration across the industry chain.

Betely role is to serve as… “Materials System Solutions Provider” , leveraging our deepest understanding and mastery of materials to transform our clients’ “three questions of anxiety” into “answers that inspire trust.” We offer not just slurry, but solutions rooted in deep collaboration. Performance commitments and mass-production assurance.

On the path to cost reduction, we’ll move forward more steadily and swiftly together.

From silver‑plated copper to copper powder: Betely portfolio of conductive materials

For HJT to achieve widespread adoption, how can it overcome this “silver” hurdle?

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