P Type 2 Busbar Single Crystal Solar Cell High Performance Solar Cells 125*125mm

Monocrystalline Solar Cells, Size Of 125*125mm 2BB, High Efficiency

1> Quick Detail:

• Place of Origin: China
• Brand Name: ZOCEN
• Model: ZC TDB-125*125
• Certificate: CE,CQC, IEC, TUV, CEC, MCS, CHUBB, ISO9001

2> Description:

• Different Types

There are many types of solar cells being explored today. The most common are monocrystalline and polycrystalline cells.

The monocrystalline cells are harvested silicone, almost like grass except in very clean rooms and it takes a long time and a lot of money. Do you know how long it takes to grow one? Each silicone crystal is then cut into slices like bread, except much thinner, and wired with front and back contacts.

Polycrystalline cells are almost the same, except they are not put together in the same way. The grown silicone is then placed into a big bin, smashed up and melted, and then spread thin onto a frame in the shape of the desired cell. You can actually tell by looking if it’s a mono or polycrystalline cell. The monocrystalline cell looks clean and pure.

In contrast the polycrystalline solar cell looks like camouflage.

However, there is huge amounts of research going on in this field to find more efficient ‘doping’ and buffer layers for various cells, and to find cheaper methods to manufacturing the cells. Each of these different cells have their own advantages and disadvantages, but the major comparisons are made in cost (which includes materials needed to build or grow the cell, and the facility and equipment needed for fabrication), efficiency, and lifetime. The following chart is the 2012 results from the current best results in solar efficiencies from the Nat.

3> Zocen 5" Monocrystalline Solar Cell

• Product details

1. Materials: Mono silicon
2. Format Dimension: 125 x 125mm (±0.5mm)
3. Diagonal: R165mm
4. Thickness wafer (Si): 190±20μm
5. Thickness cell: 200±40μm
6. Weight: 12g
7. High efficiency: 18.4%-17.0%, stable performance conversion
8. Front(-): Blue silicon nitride anti-reflection coating 1.8mm silver busbars
9. Back(+): Full-surface aluminum back-surface field 2.5mm(silver/ aluminum) continuous soldering pads Efficiency range: 17.0-18.4%
10. Maximum power range: 2.86 to 2.69W
11. Grade type: A
12. Typical temperature coefficients: Voltage: -0.038%/K; Current: +0.031%/K; Power: -0.46%/K

• Features:

1. High conversion efficiencies resulting in superior power output performance.
2. Suitable for keeping appearance of solar cell tidy and clean.
3. Advanced diffusion technology adapted to ensure conversion efficiency uniformity throughout cell.
4. Advanced PECVD film forming technology used to coat cells with dark blue silicon nitride anti-reflection coatings.
5. Uniform color appearance.
6. Advanced soft line and high precision silkscreen printing equipment to achieve high smoothness, make automatic welding and laser cutting easier.
7. Metal paste applied to making back surface field and electrode to ensure top conductivity, nice adhesion, superior weld-ability, nice appearance and reliable performance.
8. Efficiency, stability and durability of crystal silicon.
9. Low breakage rate.
10. Environmental protection.
11. OEM orders are welcome

4> Specifications:

• Mechanical dimensions

• Electrical Parameters of products

Product name	Efficiency(%)	Pmpp(W)	Vmpp(V)	Impp(A)	Voc(V)	Isc(A)
125*125mm(5") Mono-Crystalline Silicone Solar Cell	18.4	2.86	0.532	5.372	0.630	5.721
	18.2	2.82	0.529	5.531	0.630	5.717
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