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High Efficiency BC Cells
Clean by Design
Sungold BC solar modules place the electrical contacts on the rear side of the cell, reducing visible front-side metallization and creating a clean, uniform appearance. BC technology is available across rigid, lightweight, flexible and portable module formats for applications where efficiency, appearance and limited installation area all matter.
Why Choose BC Cell Technology
Higher efficiency, a cleaner front appearance, and flexible integration across multiple solar module designs.
Rear Contact
Electrical contacts placed behind the cell for more active front area.
Up to 25%
High-efficiency BC cell platform with cell efficiency up to 25%.
Clean Front
Reduced visible front metallization for a cleaner, more uniform appearance.
Multi-Format
Compatible with rigid, lightweight, flexible, and portable module designs.
Why Back Contact
More of the cell front is left open to light
In a back-contact cell, the electrical contacts are moved away from the illuminated front surface and placed on the rear side. This reduces visible front-side metallization and leaves more of the front surface available to receive light.
The result is a cleaner cell appearance and a strong platform for high-efficiency module design. This makes BC technology especially suitable for products and projects where available surface area, visual integration and power density are important.
- Reduced front-side metal coverage for a cleaner cell surface
- Cleaner visual appearance for modern all-black module designs
- High-efficiency BC cell platform with efficiency up to 25%
- Flexible BC integration across multiple module constructions
Key BC Advantages
What BC technology brings to the module
BC technology combines a cleaner front surface with a high-efficiency cell platform, making it well suited to module designs where usable area, appearance and product integration are important.
01 / OPTICAL DESIGN
Reduced Front-Side Metallization
Rear-side contacts reduce visible metal coverage on the illuminated surface, leaving more of the cell front open to incoming light.
02 / APPEARANCE
Cleaner, More Uniform Appearance
With the contact structure moved to the rear, BC cells create a visually cleaner front surface for premium and integrated solar products.
03 / ENERGY DENSITY
Well Suited to Limited Surface Area
High-efficiency BC cells are a strong fit for projects where roof space or available product surface area is limited.
04 / INTEGRATION
Available Across Multiple Formats
Sungold applies BC cells to rigid, lightweight, flexible and portable module constructions for different installation requirements.
05 / CUSTOMIZATION
Built for Application Integration
Module dimensions, power, laminate structure, frame and output configuration can be selected around the target product and installation environment.
06 / ENGINEERING
Module Performance by Design
Temperature behavior, mechanical strength, shade response and durability are determined by the complete module design and corresponding model specifications.
Rear-Side Interconnection
Designed beyond the cell itself
BC cell technology is only one part of module performance. Sungold combines back-contact cells with application-specific interconnection, encapsulation and module structures to build complete products for different installation environments.
The rear-side electrical layout keeps the illuminated surface visually clean, while the complete module structure is engineered around stable current collection, product integration and long-term reliability.
Optimized rear-side interconnection
Sungold BC module designs use rear-side cell connections matched to the selected module structure. Final electrical, mechanical and durability performance is defined by the corresponding product model.
BC Technology Across Multiple Module Formats
Sungold integrates BC cells into rigid, lightweight, flexible and portable solar modules for different installation and application requirements.
Rigid Solar
BC Rigid Solar Modules
For rooftop and fixed installations where clean appearance, rigid construction and efficient use of available area are important.
Lightweight Solar
BC Lightweight Solar Modules
For weight-sensitive roofs and vehicle applications where lower module weight and easier integration are required.
Flexible Solar
BC Flexible Solar Modules
For curved surfaces, RVs and marine integration where a thin, adaptable module format is preferred.
Portable Solar
BC Portable Solar Modules
For mobile and off-grid power applications where foldable storage, portability and efficient panel-area use are important.
Where BC modules deliver the most value
Premium Rooftops
For projects where clean appearance and efficient use of limited roof area are important.
RV & Commercial Vehicles
For mobile solar systems where usable roof area, module weight and visual integration all matter.
Marine Solar
For boats and yachts where available mounting area is limited and clean product integration is preferred.
Portable Power
For foldable solar products that combine compact storage with a high-efficiency cell platform.
Technology Selection
BC or TOPCon Choose by Application
BC and TOPCon are both high-performance crystalline-silicon cell technologies. The better choice depends on the required module format, target power, available installation area, appearance, certification and overall project requirements.
| Project Priority | BC | TOPCon |
|---|---|---|
| Front-Side Appearance | Cleaner Front Surface | Depends On Module Design |
| Front-Side Metal Coverage | Reduced By Rear-Contact Design | Front Grid Remains Visible |
| Space-Limited Applications | Strong Fit | Model Dependent |
| Mainstream Rooftop Availability | Application Dependent | Widely Used |
| Flexible And Portable Formats | Available From Sungold | Available On Selected Models |
| Selection Basis |
Compare module-level power, efficiency, dimensions,
construction, certifications and application requirements
before final selection.
|
|
Recommended Applications
Urban Rooftops / Premium Residential
Limited area, frequent shading, and high aesthetic expectations—BC’s all-black uniformity fits perfectly.
BIPV-Style Projects / Carports
A cleaner, more “building-material” look helps reduce visual disruption while maintaining strong generation potential.
Multi-Pitch or Multi-Orientation Roofs
When daily productive hours and low-light performance matter, BC supports practical yield optimization.
Premium RV / Marine / Lightweight Systems
For users who want a refined appearance and higher energy density, BC aesthetics and performance make a strong match.
BC Solar Module FAQ
BC stands for back-contact. In a BC solar cell, the electrical contacts are positioned on the rear side instead of across the illuminated front surface. This reduces visible front-side metallization and creates a cleaner, more uniform appearance.
Because the electrical contact structure is moved to the rear of the cell, fewer conductors are visible from the front. This gives BC modules a cleaner and more uniform appearance, making them well suited to all-black and design-sensitive solar applications.
No. Moving the contacts to the rear also reduces front-side metal coverage, leaving more of the illuminated cell surface available to receive light. BC technology therefore combines a clean visual design with a high-efficiency cell platform.
Both BC and TOPCon are high-performance crystalline-silicon cell technologies. BC is a strong option when clean appearance, reduced front-side metallization and efficient use of limited installation area are important. Final selection should be based on the complete module specifications, construction, certification and project requirements.
BC cells can be integrated into multiple Sungold module platforms, including rigid, lightweight, flexible and portable solar panels. Available power, dimensions and module construction depend on the selected product series and application requirements.
Yes. Depending on the project, Sungold can support different module formats, dimensions, power levels, laminate structures, frame options and electrical configurations. The final design should be matched to the installation surface, system requirements and target application.
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