Hi, I am after a range of wafers to study surface passivation and bulk properties after solar cell processing. Anything already in stock is preferable as I am looking to source some wafers as quickly as possible, if you have anything suitable for the following: • ~15x FZ, 100, high resistivity (n-type >20ohm-cm), double sided polished, 200-500um, 2inch? • ~20x FZ, 100, 5-10 ohm-cm n-type, double sided polished, 150-400um, 4inch? • ~20x FZ, 100, 5-10 ohm-cm p-type, double sided polished, 150-400um, 4inch? (p-type equivalent of previous point – ideally as close as possible in specs) • ~10x FZ, 100, 1-10 ohm-cm n-type, surface not critical, 200-400um, 4inch? • ~40x FZ, 100, 0.5-5 ohm-cm p-type, surface not critical, 200-400um, 4inch? • ~20x FZ, 100, 0.5 ohm-cm, polished or other?, 300-500um, 4 inch?
Silicon Solar Wafers for Making Solar Cells
Thin Film Solar Cell Technology Research Aided by UniversityWafer Silicon Wafers
Typical scientist's request.
Reference #264215 for specs and pricing. Buy as few as One wafer online and save! Start researching today!
Researchers at the University of Oviedo have used electronic silicon wafers as the base to deposit their thin films on. These wafers had three different types of film used on them for their research purposes. The first was a Si:H layer, second a C doped Si:H layer and lastly a P type Si:H layer. These wafers and coatings have been investigated as non-hydrogenated samples.
Samples preparation: a-Si:H thin films
Three different a-Si:H thin films deposited on electronic quality Si wafers (University Wafer, USA) have been employed in this study: an intrinsic a-Si:H layer (334 ± 8 nm thickness), a B and C doped a-Si:H layer (p-a-SiC:H) (376 ± 7 nm thickness) and a P doped a-Si:H layer (n-a-Si:H) (242 ± 9 nm thickness). The thickness of the layers was experimentally determined by profilometry on cross-sectioned witness samples by using a mechanical step profilometer (Model Ambios XP1, AmbiosTechnology, USA). Moreover, a certified reference material (CRM) 13X-8110L with 1.07% of B (MBH Analytical Ltd., UK), a steel sheath coated with a 10 μm thick NiP layer with a P concentration of 6% (SWEREA-KIMAB AB, Sweden) and an electronic quality Si wafer (University wafer, USA) have been investigated as non-hydrogenated samples.
Solar Silicon Cells up to 19.5% efficiency.
Since the 1970s the National Renewable Energy Lab (NREL) has cataloged over 20 differerent type of solar cell technology. Below are some solar cell technologies:
- traditional crystalline silicon cells
- thin-film cells
- single-junction cells
- multi-junction cells
- quantum dot cells
- solar concentrators
These above tech have various efficiencies.Our monocrystalline solar cells have efficiencies of up to 19.5%.
What does solar efficiency rating measures the percentage of sunlight 
photons hitting the solar cell for a given space. Higher efficiency means that less surface area is required to to generate electricity. So a small rooftop will want to use higher efficiency panels to compensate for smaller surface area.
Solar Silicon Cells up to 19.5% efficiency
Since the 1970s the National Renewable Energy Lab (NREL) has cataloged over 20 differerent type of solar cell technology. Below are some solar cell technologies:
- traditional crystalline silicon cells
- thin-film cells
- single-junction cells
- multi-junction cells
- quantum dot cells
- solar concentrators
These above tech have various efficiencies.Our monocrystalline solar cells have efficiencies of up to 19.5%.
What does solar efficiency rating measures the percentage of sunlight photons hitting the solar cell for a given space. Higher efficiency means that less surface area is required to to generate electricity. So a small rooftop will want to use higher efficiency panels to compensate for smaller surface area.
Below are just some of the Solar cells that we have in stock.
At present, we had poly and mono solar cells in stock as follow.Hope it is useful to you.
6 inch Poly cell
Poly solar cells,156*156mm,6inch,3BB/4BB,17.6-17.8% efficiency
Poly solar cells,156*156mm,6inch,3BB/4BB,above 18% efficiency
6 inch Mono cell
Mono solar cells,156*156mm,6inch,3BB,4.3Watt/PCS
Mono solar cells,156*156mm,6inch,3BB,18.8-19.5% efficiency
5 inch Mono cell
125mm Mono Solar cells ,P type, 2BB, 2.8W/PCS
125mm Mono Solar cells ,Sunpower, 2BB, 3.2-3.5W/PCS
Fast delivery.
125MM Mono Cell Technical SpecificationPhysical Characteristics |
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| Item | Solar Cell | |||||||||||
| Material | Mono-crystalline Silicon | |||||||||||
| Dimension | 125mmx125mm±0.5mm | |||||||||||
| Diagonal | 165mm±0.5mm | |||||||||||
| Thickness | 200±20 μm | |||||||||||
| Front(-) | Blue anti-reflecting coating (silicon nitride) | |||||||||||
| 1.6mm wide bus bars | ||||||||||||
| Distance between bus bars: 61mm | ||||||||||||
| Back(+) | Aluminum back surface field | |||||||||||
| 2.5mm wide soldering pads | ||||||||||||
| Distance between bus bars: 61mm | ||||||||||||
| Electrical Characteristics | ||||||||||||
| Efficiency(%) | 19.4 | 19.2 | 19 | 18.8 | 18.6 | 18.4 | 18.2 | 18 | 17.8 | 17.6 | 17.4 | 17.2 |
| Pmpp(W) | 2.97 | 2.94 | 2.91 | 2.88 | 2.85 | 2.82 | 2.79 | 2.76 | 2.73 | 2.7 | 2.67 | 2.62 |
| Umpp(V) | 0.537 | 0.535 | 0.533 | 0.531 | 0.527 | 0.524 | 0.521 | 0.518 | 0.516 | 0.515 | 0.513 | 0.509 |
| Impp(A) | 5.531 | 5.495 | 5.46 | 5.424 | 5.408 | 5.382 | 5.355 | 5.328 | 5.291 | 5.243 | 5.195 | 4.147 |
| Uoc(V) | 0.637 | 0.637 | 0.636 | 0.635 | 0.633 | 0.63 | 0.629 | 0.629 | 0.628 | 0.626 | 0.626 | 0.625 |
| Isc(A) | 5.888 | 5.876 | 5.862 | 5.848 | 5.839 | 5.826 | 5.809 | 5.791 | 5.779 | 5.756 | 5.293 | 5.144 |
Solar Grade Wafers
A researcher asked us for the following:
We would like to have solar grade wafers, but if you are unable to provide these then any wafers with impurities but no surface damage would be ideal.
We quoted the following. Please ask for pricing or provide us with your specs.
Wafer Batch 1:
Grade: Solar grade (if available)
Quantity: 25
Diameter: 100 mm
Dopant: Phosphorus
Orientation: <100>
Growth method: CZ
Resistivity: 1-5 ohm-cm
Thickness: 280 um
DOUBLE SIDE POLISHED
Wafer Batch 2:
Grade: Solar grade (if available)
Quantity: 25
Diameter: 100 mm
Dopant: Boron
Orientation: <100>
Growth method: CZ
Resistivity: 1-5 ohm-cm
Thickness: 280 um
DOUBLE SIDE POLISHED
Wafer Batch 3:
Grade: Solar grade (if available)
Quantity: 25
Diameter: 100 mm
Dopant: Phosphorus
Orientation: <100>
Growth method: FZ
Resistivity: 1-5 ohm-cm
Thickness: 280 um
DOUBLE SIDE POLISHED
Do Solar Cell Manufactures Recycle Their Kerf?
In the manufacturing of solar cells, "kerf" refers to the waste material produced during the cutting process, often in the form of silicon dust or small particles. The recycling of kerf is an important aspect in the solar industry as it helps in reducing waste and conserving valuable materials like silicon.
The practice of recycling kerf varies among solar cell manufacturers. While some companies have implemented advanced recycling processes to reclaim and reuse silicon from kerf, others may not have such systems in place. The percentage of manufacturers that recycle kerf can vary based on several factors, including the technology available, the cost-effectiveness of recycling processes, and environmental regulations in their operating regions.
It's also worth noting that the solar industry is continuously evolving, with an increasing focus on sustainability and waste reduction. This trend is likely encouraging more manufacturers to adopt kerf recycling practices. However, to get the most current and specific information about the percentage of solar cell manufacturers that recycle kerf, it would be necessary to consult industry reports or conduct a more detailed investigation into the practices of individual companies.