3.9Watt 156mm Polycrystalline Silicon Solar Cell (2BB)

156mm Polycrystalline Silicon Solar Cell Optimized energy output Environmental protection Low breakage rate Color uniformity

Electrical Property  

1, Solar Cells Structure

2, Mechanical Date and Design

Format	156x156mm ±0.5mm
Diameter	220±0.5mm
Thickness	200±20um
Weight	12±0.5g
Front(-)	1.8mm bus bars (Silver)
	Blue anti-reflecting coating (Silicon nitride)
Back (+)	3mm wide soldering pads (Silver)
	Back surface field (aluminum).

3, Electrical Parameters

Efficiency cell (%)	Maximum power Pmpp(w)	Peak voltage Vmp(V)	Peak current Imp (A)	Open-circuit Voltage Voc(V)	Short-circuit current Isc(A)
17.0-17.2	4.14	0.523	7.957	0.628	8.454
16.8-17.0	4.09	0.520	7.883	0.627	8.362
16.6-16.8	4.04	0.518	7.832	0.626	8.315
16.4-16.6	3.99	0.516	7.779	0.623	8.265
16.2-16.4	3.94	0.514	7.772	0.620	8.210
16.0-16.2	3.89	0.511	7.668	0.618	8.158
15.8-16.0	3.84	0.509	7.610	0.615	8.102

4,Temperature Characteristics

Name	Unit	Value
α (Isc)	[%/°C]	0.0574
β (Voc)	[%/°C]	-0.3083
ϒ (Pmax)	[%/°C]	-0.4060

5, Intensity Dependence

Irradiance[W/m²]	Open-circuit voltage[%]	Short-circuit current[%]	Maximum power[%]
1000	100.0	100.0	100.0
800	98.56	80.05	79.86
600	97.39	60.08	59.51
400	95.70	40.11	39.13
200	92.66	20.07	18.88

6.I-V Curve & Spectral Response

7.Feature:

High conversion efficiencies resulting in superior power output performance

Outstanding power ourput even in low light or high temperature conditions

Optimized design for ease of soldering and lamination

Long-term stability,reliability and performance

Low breakage rate

Color uniformity

8.Quality Assurance & Control

ISO9001 quality management system and ISO14001 environmental management system standard are completely implemented in our company's solar cell manufacture process.

1, classified efficiency grades by both minimum power and power current

2, Screened for reverse current and shunt resistance

3, Constant reliability monitoring

4, Sorted into four defined color classes

5, Minimal button marks

6, No beading

7,Low warpage and bowing

8, REACH-SVHC and RoHS compliant

How Solar Cells Work

Photovoltaic cells, also known as PV or solar cells, are created from semiconductor material such as silicon. The process of solar conversion works as follows:

1) When light strikes the cells, a specific portion or "band" of the light wave is absorbed by the material.

2) That solar energy causes the semiconductor material to release electrons.

3) The semiconductor material is positioned within an electrical field by using negatively and positively charged silicon (n-type and p-type), so that all electrons set "fee" from the material are forced to flow-generating electrical current.

Solar Cells Manufacturing Line

Solar Cells Manufacturing Process

Parameter Test

Especially mentioned that you can't multimeter to test the solar cells, it is not the right way!

To test solar cell should use the professional equipment, please check above photos to see how we test. 

Please noted that, there have many PM points on the solar cells, use multimeter only can touch 1 or 2 PM point, it is hard to make the current come out.  You can see our test equipment; there have many metal needles, almost touch the whole solar cell busbar.  Normally, to use the multimeter, no matter what kind solar cells, sometime there only very less current come out, like 0.1-0.5A!

Test Result

Package 

3.9Watt 156mm Polycrystalline Silicon Solar Cell (2BB)