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4.57W Poly Solar Cell for 275W Solar Panels

4.57W Poly Solar Cell for 275W Solar Panels

$0.78 /piece price excl.VAT

Negotiable
Order

Minimal order
100 pieces

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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 .

Features:

1.High conversion efficiency resulting in superior power output performance.

2.Outstanding power output even in low light or high temperature conditions

3.Optimized design for ease of soldering and lamination

4.Long-term stability,reliability and performance

5.Output power tolerance of +/-3%

6x6 inch (156mm*156mm) Multi-crystalline solar cell

 

 

Physical characteristics

 

Dimension156mm X 156 mm ±0.5mm
Wafer Thickness200um ±30um
Front(-)Four 1.1mm wide bus bars(silver) with distance 39mm,
Acid texturized surface with blue silicon nitride AR coating.
Back(+)2.4mm wide silver/aluminum soldering pads, aluminum back surface field.

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

Efficiency code 172017401760178018201840
Efficiency (min)(%)17.217.417.617.818.218.4
Pmax(W)4.1864.2344.2834.3324.4294.478
Voc(V)0.6310.6320.6340.6360.6400.642
Isc(A)8.4468.4858.5238.5738.6608.700
Vmp(V)0.5250.5270.5290.5310.5350.537
Imp(A)7.9738.0358.0978.1608.2808.340

 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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Packaging details

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