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18.5 Poly 156.75 4bb Solar Cell High Quality

18.5 Poly 156.75 4bb Solar Cell High Quality

$0.9 /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 efficiencies 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.Low breakage rate

 

6.Color uniformit

 

Physical characteristics:

MaterialPolycrystalline Silicon
Size156.75*156.75
Number of Cells1pcs
Efficiency16.0-18.6%
Max. Power4.56watt
Thickness200 μm +/-20μm
Front1.0mm Bus Bars(Silver);Dark Blue Silicon Nitride AR Coating.
Back2.5mm Wide Soldering Pads(Silver);Back Surface Field (Aluminium)

PACKAGE: 100 PCS /Box

-14 Boxes/CTN

-1400 PCS/CTN

-Gross Weight: 18.5 kg /CTN

- CTN size: 45*25*25mm

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

 

Efficiency code186184182180178176174172170168166164162160
Efficiency (%)18.618.418.21817.817.617.417.21716.816.616.416.216
Max power (P-max )4.534.484.434.384.334.284.234.194.144.094.043.993.943.89
Max power current (i-Max)8.4158.388.258.2018.1768.1538.1138.0698.027.9727.9227.8707.8177.764
Short circuit current(Isc)8.9458.9138.7318.6818.6568.6318.5948.5548.5058.4558.4058.3268.2718.215
Max. power voltage  (V max)0.5380.5340.5370.5340.530.5250.5220.5190.5160.5130.5100.5070.5040.501
Open circuit voltage (Voc)0.6460.6420.6370.6340.6290.6240.620.6180.6150.6120.5720.5420.4920.452

A.Quality and Safety

 1. Rigorous quality control meets the highest international standards.

2. High-transmissivity low-iron tempered glass, strong aluminium frame.

3. Using UV-resistant silicon.

4. IS09001/14001/CE/TUV/UL

B.Warranties

1. 10 years limited product warranty

2. 15 years at 90% of the minimal rated power output

3. 25 years at 80% of the minimal rated power output

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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