Product Specifications

Type

Poly

Product Description

Poly crystalline solar cells 156.75mm with 4bb bus bars

Description:

1.Pid free

2.High conversion efficiency,average cell efficiency is 18.2%,highest efficiency is 18.8%

3.Excellent solder-ability through high quality

4.Long term efficiency stability and excellent reliability

5.Low breakage rate and low lid rate

6.Good color uniformity

                                         Advantage                                               

-High photoelectric conversion ,high reliability.

-The unique expansion technology ensures the uniformity.

-The advanced PECVD technology makes the dark blue silicon nitride antireflection film uniform and beautiful in color.

-The back surface field and electrode made of high-quality metal paste ensure good electrical conductivity, reliable adhesion and good weldability.

-High precision silk screen printing and flatness makes auto welding and laser cutting much easier.

Features:

Product Description

                                      Poly-Crystalline Silicon Solar Cell 4BB

Physical characteristics

Typical electrical characteristics

Electrical  characteristics

Data under standard testing conditions(stc):1,000w/m2, am1.5, 25ºc, pmax:Positive power tolerance.

 Warranty: 

The quality of all cells is 100% safety guarantee because they are protectively warehoused.

Any quality problem (defective products) could be return, except that broken solar cell are required by customers.

All cells are tested before delivery as customers required.

1. What's the MOQ for solar cells?

The MOQ is 150pcs, as the package is 150pcs/pack. They can be be disassembled. 

2. Are you a factory or trading company?

We are a factory. We would be very glad if you could visit our factory and office.

3. When can I receive the goods?

The solar cells are on stock now, so we can ship them to you within 3 working days after received the payment. 

4. What's the payment terms?

We accept 100% T/T and L/C.

5. How can I know the quality of cells?

All the solar cells have passed the EL test, if you need, we can give you test report. 

Solar Cell Production Line

Cleaning & Texturing: Wafers are cleaned with industrial soaps and form square-based pyramids also called texture. The texturization helps to reduce the reflection of sunlight. 

Diffusion: Wafers that have been pre-droped with boron during the casting process are then given a negative(n-type) surface characteristic by diffusing them with a phosphorus source at high temperature, which in turn creats the negative/positive(n-p) junction.

Etching: Phosphorus diffuses not only into the desired wafer surface but also into the side and the opposite surface to form PN. This gives a shunt path between the cell front and rear. Removal of the path around the wafer edge/edge junction isolation is named etching.

PECVD: By PECVD equipment, the wafers are coated with anti-reflection coating(ARC). It's the blue silicion nitride film to reduce reflection and promote absorption of light.

Printing & Heating: it was adopted by printing paste with screen technology to print the electrodes of silicion solar, and form a good ohmic contact.

Testing & Sorting: It means classifying the cells according to their efficiency tested under the simulated sunlight.

Supply Ability

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Packaging and Shipping

Lead time

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Port

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Packaging details

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