Your Professional Back Contact Solar Panels Supplier!
Shandong Shunde Zhihui New Energy Co., Ltd., established in 2016, specializes in the research, development, and construction of grid-connected distributed power stations and off-grid power supply systems, as well as the production and sales of solar photovoltaic products. These products are widely used in high-end residential buildings, factories, mines, industrial parks, and other scenarios, providing efficient and convenient energy solutions to customers across various industries.
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![Back Contact Solar Cell]()
Back Contact Solar CellBrand: 通威 TONGWEI. 1.Maximizes light absorption with no front metal contacts, eliminating shading losses and achieving over 23% module efficiency.. 2.Uses copper-plated back electrodes instead of -
![Back Contact Sunpower]()
Back Contact SunpowerBrand: 隆基 LONGI. Back Contact SunPower is a high-efficiency solar module launched by the company, utilizing advanced back contact technology to hide the metal wires of the solar cells on the back -
![Rear Contact Solar Cells]()
Rear Contact Solar CellsBrand: 隆基 LONGI. 1.Higher Energy Efficiency: Eliminates front grid shading, maximizing sunlight absorption. Combined with advanced light-trapping structures, it achieves quantum efficiency over 90% -
![All Back Contact Cell]()
All Back Contact CellBrand: 通威 TONGWEI. 1.Superior Efficiency: No front grid shading boosts sunlight capture; optimized electrodes cut resistance. Mass production efficiency hits up to 25.5%.. 2.Sleek Aesthetics: Grid - -
![All Back Contact Solar Cells]()
All Back Contact Solar CellsBrand: 隆基 LONGI. 1.No Front-Side Metal Shading. All electrical contacts are positioned on the rear, allowing maximum sunlight absorption and increasing overall energy yield.. 2.Higher Conversion -
![Interdigitated Back Contact Solar Cells]()
Interdigitated Back Contact Solar CellsBrand: 通威 TONGWEI. 1.Extreme light capture capability. 2.Industry-leading conversion efficiency. 3.Significant efficiency gains with double-sided power generation. 4.Ultra-low attenuation
Why Choose Us
Patent Certification
We hold numerous domestic and international patents, covering core areas such as photovoltaic systems, energy storage solutions, and intelligent control. We have also received numerous international certifications, including TUV, IEC, UL, and CQC, ensuring our products meet global quality and safety standards.
One-Stop Service
To meet the needs of end customers, we provide a comprehensive, integrated service process encompassing pre-production consultation, solution design, on-site installation, system commissioning, and ongoing operational support. This ensures efficient and stable project execution, improving overall delivery quality and customer satisfaction.
Professional Team
We have assembled a R&D team of over 30 professional engineers dedicated to the innovation and application of solar cell technology, with a solid technical foundation and continuous R&D capabilities.
Production Capacity
We operate a fully automated production line with a monthly production capacity of 10,000 units. Each module undergoes rigorous quality testing before shipment, including EL (electroluminescence) testing and mechanical load testing, to fully guarantee product reliability and long-term performance.
Specification
|
Details |
STC |
NOCT |
|
Maximum power (Pmax) [W] |
640 |
483.4 |
|
Open-circuit voltage(Voc) [V] |
44.80 |
42.20 |
|
Operating voltage at maximum power point (Vmp) [V] |
37.00 |
34.46 |
|
Short-circuit current (Isc) [A] |
18.36 |
14.80 |
|
Operating current at maximum power point (Imp) [A] |
17.30 |
14.03 |
|
Dimensions |
2384±2×1303±2×35mm |
|
|
Battery type |
Monocrystalline silicon |
|
|
Arrangement of battery cells |
132 Pieces [6×22] |
|
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Weight |
34.2KG |
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Higher Efficiency
No Front Gridlines: Without metal lines on the front, more sunlight hits the cell directly, increasing the amount of electricity generated.
Improved Light Absorption: The entire surface is used for light absorption, maximizing the cell's efficiency.
Better Aesthetics
Sleek Appearance: Since the front is clear of gridlines, back contact solar panels have a more uniform and attractive appearance, making them ideal for residential and commercial buildings where aesthetics matter.
Enhanced Performance
Less Heat Buildup: With fewer components on the front, back contact solar panels can stay cooler, which helps maintain their efficiency over time.
Durability: The unique design can make BC cells more robust and less prone to damage, extending their lifespan.
Broad Applications
Flexible Usage: Their sleek look and high efficiency make back contact solar panels suitable for a variety of applications, from residential rooftops to large-scale solar farms.
Back Contact Sunpower
Back Contact SunPower is a high-efficiency solar module launched by the company, utilizing advanced back contact technology to hide the metal wires of the solar cells on the back side of the cells. This design differs from traditional solar panels, effectively avoiding front-side metal obstruction, improving light absorption efficiency, and thereby enhancing overall power generation efficiency.
Rear Contact Solar Cells
Higher Energy Efficiency: Eliminates front grid shading, maximizing sunlight absorption. Combined with advanced light-trapping structures, it achieves quantum efficiency over 90% in 300-1180nm wavelength range.
All Back Contact Cell
Grid - free front for a uniform fully - black look, ideal for residential rooftops and BIPV to match buildings. Back - contact design withstands mechanical loads, lowering damage risk and extending lifespan.
All metal contacts in Back Contact Solar Panels are positioned on the back side of the cell. This design eliminates shading on the front surface, ensuring maximum light absorption. By placing contacts more widely on the back, series resistance is reduced, improving the cell's efficiency.
The primary absorption layer in a back contact solar panel is a crystalline silicon (c-Si) wafer, which can be either n-type or p-type. This layer is created by doping the silicon with boron or phosphorus, depending on the desired polarity. To further enhance the cell's performance, a passivation and anti-reflective coating, typically made of SiO, is applied to minimize reflection and protect the surface.
Another key feature of back contact solar panel is the diffusion layer, where n-type and p-type regions intersect. This configuration enables the integration of back-side metal contacts and supports efficient current flow through the cell.
To enhance the efficiency of c-Si wafers, an anti-reflective and passivation layer is applied to one or both sides. This layer is often composed of silicon dioxide (SiO2), which is thermally oxidized, though other materials like silicon nitride (SiNx) or boron nitride (BNx) are also effective in minimizing reflection and protecting the wafer's surface.
Basic Principles of Back Contact Solar Panels
Back contact solar panels achieve potentially higher efficiency by moving all or part of the front contact grids to the rear of the device. The higher efficiency potentially results from the reduced shading on the front of the cell and is especially useful in high current cells such as concentrators or large areas. There are several configurations.
Application Areas of Back Contact Solar Panels
Residential Applications
Homeowners install back contact solar panels on rooftops to generate electricity for daily use, reducing reliance on the grid and lowering electricity bills.
01
Commercial Applications
Companies install back contact solar panels on rooftops or parking canopies to offset energy costs and meet corporate sustainability goals.
02
Industrial Applications
Utility-scale solar plants generate electricity for thousands of homes, feeding into the grid to meet regional demand.
03
Transportation Applications
Experimental cars, boats, and airplanes use back contact solar panels to extend range or operate entirely on sunlight.
04
Off-Grid & Remote Applications
Back contact solar panels bring electricity to villages without grid access, powering homes, schools, and clinics.
05
Contact Customer Service
Submit Order
Obtain a Quote
Confirm Order
Arrange Payment
Track Order
Receive and Inspect Goods
Deliver, Shipping and Serving
Lead Time:
7-15 Days after order confirmation.
Global Shipping:
DDP (Duty Paid) via air/sea to EU, USA, Australia.
Packaging:
Wooden crate with shock-absorbent foam (IP67 during transit).
Our Certificate
FAQ
We're professional back contact solar panels manufacturers and suppliers in China, specialized in providing high quality customized products. We warmly welcome you to wholesale bulk back contact solar panels for sale here from our factory. For price consultation, contact us.
All Back Contact Solar Cells, Interdigitated Back Contact Solar Cells, monocrystalline silicon solar panels
