Product Specifications

Type

Poly

Product Description

Flagsun's manufacturing covers the photovoltaic value chain from ingot casting and wafering through solar cell production and solar panel assembly.All the cell is with most strict quality standard in every production process .

Key Specifications/Special Features:

Product: 3BB 156*156mm polycrystalline silicon solar cell

Brand name: OEM

Model number: FSC-156-P23

Material: grade polycrystalline silicon

Size: 156*156mm (6*6 inches)

Power: 3.89-4.53W

Efficiency: 16-18.60%

Color: dark blue

Weight: 11.2 ±0.5g

Front: 1.1mm bus bars (silver), dark blue silicon nitride AR coating

Back: 2.2mm wide soldering pads (silver), back surface field (aluminium)

Thickness: 200μm +/-20μm

Quality inspection: check one by one before shipment

Packing: 100 pieces per box, 12 boxs per carton

Physical characteristics:

Data under standard testing conditions(STC):1000W/Sq.M, AM1.5, 25ºC

 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.

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