A Silicon Wafer Solar Cell - High Current 18.2% Polycrystalline Silicon Solar Cell

A Silicon Wafer Solar Cell - High Current 18.2% Polycrystalline Silicon Solar Cell System 1

A Silicon Wafer Solar Cell - High Current 18.2% Polycrystalline Silicon Solar Cell

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 1000 pc

Supply Capability:: 100000 pc/month

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PHYSICAL CHARACTERISTICS

Dimension: 156mm x 156mm ± 0.5mm

Wafer Thickeness: 180um+20um and 200um+20um

Front(-) Four 1.2mm silver busbar

Silicon nitride blue anti-reflection coating

Back(+) aluminum back surface field
1.75mm(silver) wide segment soldering pads

High Current Solar Cell 18.2% Polycrystalline Silicon Solar Cell Price

Typical Electrical Characteristics

Efficiency	W(Pmpp)	V(Umpp)	A(Impp)	V(Uoc)	A(Isc)
17.4-17.5	4.234	0.517	8.231	0.622	8.759
17.5-17.6	4.259	0.519	8.243	0.623	8.769
17.7-17.8	4.283	0.521	8.256	0.625	8.779
17.8-17.9	4.307	0.523	8.268	0.626	8.788
17.9-18.0	4.332	0.525	8.281	0.627	8.798
18.0-18.1	4.380	0.529	8.306	0.629	8.808
18.1-18.2	4.405	0.531	8.318	0.632	8.818
18.2-18.3	4.429	0.533	8.331	0.633	8.837
18.3-18.4	4.453	0.535	8.344	0.634	8.847
18.4-18.5	4.478	0.537	8.356	0.636	8.856
18.5-18.6	4.502	0.539	8.369	0.637	8.866

Efficiency	W(Pmpp)	V(Umpp)	A(Impp)	V(Uoc)	A(Isc)
20.90-21.00	5.06	0.557	9.007	0.653	9.688
20.80-20.90	5.04	0.556	9.062	0.652	9.683
20.70-20.80	5.02	0.554	9.055	0.651	9.684
20.60-20.70	4.99	0.552	9.033	0.651	9.672
20.50-20.60	4.97	0.550	9.002	0.650	9.673
20.40-20.50	4.94	0.548	9.012	0.649	9.674
20.30-20.40	4.92	0.546	9.009	0.649	9.655
20.20-20.30	4.89	0.543	9.012	0.648	9.634
20.10-20.20	4.87	0.541	8.998	0.648	9.617
20.00-20.10	4.85	0.540	8.977	0.647	9.600

*Data under standard testing conditional (STC):1,000w/m2,AM1.5, 25°C , Pmax:Positive power tolerance.

3 Bus Bars 156*156 17.4% efficiency poly solar cell

Dimension: 156 mm x 156 mm ± 0.5 mm

Wafer Thickeness: 156 mm x 156 mm ± 0.5 mm

High Current Solar Cell 18.2% Polycrystalline Silicon Solar Cell Price

Typical Electrical Characteristics:

Efficiency code	1660	1680	1700	1720	1740	1760	1780	1800	1820	1840	1860
Efficiency (%)	16.6	16.8	17.0	17.2	17.4	17.6	17.8	18.0	18.2	18.4	18.6
Pmax (W)	4.04	4.09	4.14	4.19	4.23	4.28	4.33	4.38	4.43	4.48	4.53
Voc (V)	0.612	0.615	0.618	0.621	0.624	0.627	0.629	0.63	0.633	0.635	0.637
Isc (A)	8.42	8.46	8.51	8.56	8.61	8.65	8.69	8.73	8.77	8.81	8.84
Imp (A)	7.91	7.99	8.08	8.16	8.22	8.27	8.33	8.38	8.43	8.48	8.53

* Testing conditions: 1000 W/m2, AM 1.5, 25 °C, Tolerance: Efficiency ± 0.2% abs., Pmpp ±1.5% rel.

* Imin : at 0.5 V

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FAQ:

1. Q: Do you have your own factory?

A: Yes, we have. Our factory located in Jiangsu

2. Q: How can I visit your factory?
A: Before you visit,please contact us.We will show you the route or arrange a car to pick you up.
3. Q: Do you provide free sample?
A: Commenly we provide paid sample.

4. Q: Could you print our company LOGO on the nameplate and package?

A: Yes, we accept it.And need an Authorization Letter from you.

5. Q: Do you accept custom design on size?

A: Yes, if the size is reasonable.

6. Q: How can I be your agent in my country?

A: Please leave feedback. It's better for us to talk about details by email.

7. Q: Do you have solar project engineer who can guide me to install system?

A: Yes, we have a professional engineer team. They can teach you how to install a solar system.

Q: What is the expected efficiency improvement for tandem solar silicon wafers?: The expected efficiency improvement for tandem solar silicon wafers is typically around 30% or more compared to single-junction solar cells.

Q: What is the purpose of a solar silicon wafer in a solar cell?: The purpose of a solar silicon wafer in a solar cell is to convert sunlight into electricity. The silicon wafer acts as the main component for absorbing photons from the sun, generating an electric current through the photovoltaic effect.

Q: What is the cutting fluid for solar wafer cutting?: MB, HCT, NTC and other machines, the requirements of silicon cutting fluid and the proportion of silicon carbide powder is generally controlled at 1:0.92-0.95, mortar density in 1.630-1.635 can be cut quite ideal. Even if there is a greater proportion of proportion, and even mortar density of 1.67 or so will not have any problems, as long as the mortar viscosity control in 200--250 can be. But Ernst machine for mortar density is not higher than 1.57, that is to say 1.55-1.57. can control the viscosity of mortar at around 150, so the domestic silicon cutting fluid will appear in the 1.57 density with mortar, mortar viscosity may be less than 120, and if the mortar viscosity density to 150, more than 1.57, even more than 1.60. The viscosity of mortar is too large, directly will cause the machine alarm, actually influence deeper and may cause the film does not wash clean, burn, or heating of the motor, bearing on the machine itself is very wear.Therefore, the current domestic solar silicon cutting fluid, it is not very suitable for the Ernst & Young machine. The good news is that domestic users have found the defects of the machine, the machine began to replace the mortar pump from the original 0.75KW into 1.5KW, which may solve this problem.

Q: How are solar silicon wafers protected from corrosion?: Solar silicon wafers are typically protected from corrosion by applying a thin layer of passivation material, such as silicon nitride or silicon dioxide, on their surface. This protective coating acts as a barrier, preventing moisture and other corrosive agents from reaching the silicon and causing degradation. Additionally, encapsulation with a water-resistant material, such as glass or plastic, further shields the wafers from environmental factors that could lead to corrosion.

Q: What is the role of a back surface field in a solar silicon wafer?: The role of a back surface field in a solar silicon wafer is to enhance the efficiency of the solar cell by reducing the recombination of charge carriers at the back surface. It accomplishes this by creating a high-quality passivation layer that prevents the loss of carriers, thus increasing the overall performance of the solar cell.

Q: What is the role of solar silicon wafers in disaster response and recovery?: Solar silicon wafers play a crucial role in disaster response and recovery by providing a reliable and sustainable source of energy. These wafers are used to manufacture solar panels that can generate electricity from sunlight, making them ideal for situations where power infrastructure has been damaged or disrupted. Solar panels can be deployed quickly and easily, providing essential electricity for emergency services, communication systems, medical facilities, and relief efforts. Additionally, solar energy helps reduce reliance on fossil fuels during recovery, minimizing environmental impact and ensuring long-term energy solutions in disaster-stricken areas.

Q: What is the impact of impurities on the durability of solar silicon wafers?: Impurities in solar silicon wafers can have a significant impact on their durability. These impurities can affect the structural integrity and electrical properties of the wafers, leading to reduced efficiency and shorter lifespan of the solar cells. Impurities like metal ions or oxygen can introduce defects in the crystal lattice, causing degradation and increased recombination of charge carriers. This can result in reduced power output and decreased overall performance of the solar panels. Therefore, minimizing impurities and ensuring high purity silicon is crucial for enhancing the durability and longevity of solar silicon wafers.

Q: Are there any limitations to the size of solar silicon wafers?: Yes, there are limitations to the size of solar silicon wafers. Currently, the most common size for solar silicon wafers is around 156 mm x 156 mm or 6 inches x 6 inches. This size is widely used in the solar industry due to various factors such as manufacturing capabilities, handling, and compatibility with existing solar cell production equipment. However, larger wafer sizes, such as 166 mm x 166 mm or even larger, are being developed and implemented to increase solar panel efficiency and reduce manufacturing costs. Nonetheless, there are practical limitations to the size of solar silicon wafers, including the challenges related to handling larger sizes, potential increase in material waste, and compatibility with existing solar panel designs and installations.

Q: How are solar silicon wafers tested for electrical properties?: Solar silicon wafers are tested for electrical properties through a series of rigorous tests. One common method is the sheet resistance test, which measures the resistance across the wafer surface to determine its overall conductivity. Another test involves measuring the open-circuit voltage and short-circuit current to evaluate the wafer's performance under different lighting conditions. Additionally, the wafers can be subjected to various stress tests, such as temperature and humidity, to assess their durability and reliability. These tests ensure that the solar silicon wafers meet the required electrical standards for efficient energy conversion.

Q: Can solar silicon wafers be used in solar-powered lighting systems?: Yes, solar silicon wafers can be used in solar-powered lighting systems. These wafers are commonly used in the production of solar cells, which convert sunlight into electricity. Solar-powered lighting systems utilize solar cells to harness the sun's energy and power the lighting fixtures. Therefore, solar silicon wafers are a crucial component in the functioning of solar-powered lighting systems.

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