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High Efficiency 4W to 4.38W Multi Polycrystalline Solar Cells

High Efficiency 4W to 4.38W Multi Polycrystalline Solar Cells

$0.55 /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%

Temperature Coefficients,

TkVoltage:-0.348%/K;

TkCurrent:+0.031%/K

TkPower:-0.46%/K

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

Electrical 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.

 

Electrical Characteristics 

Efficiency(%)18.0017.8017.6017.4017.2016.8016.6016.4016.2016.0015.8015.60
Pmpp(W)4.334.294.244.194.144.094.043.993.943.903.863.82
Umpp(V)0.5300.5270.5240.5210.5180.5160.5140.5110.5090.5060.5030.501
Impp(A)8.1598.1268.0818.0357.9907.9387.8767.8137.7547.6987.6427.586
Uoc(V)0.6330.6310.6280.6250.6230.6200.6180.6170.6150.6130.6110.609
Isc(A)8.7098.6778.6298.5788.5318.4788.4198.3568.2898.2208.1518.083

Warranty

 

25-years limited warranty on power output: 10 years/90%, 25 years/80% 

Packaging & Shipping

 

The solar cells are packed in cartons, and then pallet. 

Shipping by sea or by air are both ok, it's up to customer's choice.

We'd like to inquire the freight cost for customer after be informed exact quantity and destination address.

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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