Solar Silicon Wafers for Photovoltaic Research
UniversityWafer supplies solar silicon wafers, photovoltaic substrates, and solar cells for research, testing, and production. Our inventory includes 125mm and 156mm pseudo-square silicon wafers, monocrystalline solar cells, and polycrystalline solar cells for photovoltaic device development.
We also provide solar wafer backgrinding services for customers who need thinner silicon solar cells. Solar silicon cells can be background down to 50 microns to support advanced research in lightweight PV devices, flexible solar panels, heat dissipation, and high-efficiency solar cell designs.
Thinner solar wafers may improve thermal management, reduce material use, and support better device performance in photovoltaic testing. Please send us your required wafer size, thickness, cell type, efficiency range, and quantity.
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In-Stock Solar Silicon Wafers
UniversityWafer supplies solar silicon wafers and pseudo-square photovoltaic substrates for solar cell research and production. Typical inventory includes:
- Size: 156mm × 156mm
- Orientation: (100)
- Dopant: N/Phosphorus
- Resistivity: 1-5 Ω-cm
- Thickness: 200µm as-cut
- Saw Marks: <15µm
- TTV: <30µm
- Bow: <40µm
Solar Cell Efficiency Comparison
According to data from the National Renewable Energy Laboratory (NREL), different photovoltaic technologies achieve the following theoretical efficiencies:
- Multijunction Solar Cells: 44%
- Single-Junction GaAs Cells: 29%
- Crystalline Silicon Cells: 24%
- Thin Film Technologies: 20%
- Emerging Photovoltaics: 14.1%
Solar Cell Inventory
6-Inch Polycrystalline Solar Cells
- 156 × 156mm, 3BB, 16.0-16.7% efficiency, 10,000 pcs
- 156 × 156mm, 3BB, 17.2-17.4% efficiency, 30,000 pcs
- 156 × 156mm, 3BB, 17.6-18.0% efficiency, 30,000 pcs
6-Inch Monocrystalline Solar Cells
- 156 × 156mm, 3BB, 4.3W/cell, 40,000 pcs
- 156 × 156mm, 3BB, 18.8-19.5% efficiency, 35,000 pcs
5-Inch Monocrystalline Solar Cells
- 125mm SunPower cells, 2BB, 3.2W/cell, 80,000 pcs
Maximum Efficiency of Silicon Solar Cells
The theoretical efficiency limit for single-crystal silicon solar cells is approximately 29%. Studies by Tiedje and Swanson show that maximum efficiency is achieved at thicknesses near 100µm. Commercial photovoltaic cells typically achieve efficiencies near 20%, while laboratory devices have exceeded 25%.
How Silicon Solar Cells Are Manufactured
Surface Texturing
The silicon surface is textured to create microscopic pyramids that reduce reflection and increase sunlight absorption.
Phosphorus Doping
N-type regions are created through phosphorus diffusion, forming the p-n junction responsible for converting light into electricity.
Edge Isolation and Cleaning
Excess dopants are removed to prevent electrical shorting and improve device performance.
Anti-Reflective Coating
A silicon nitride coating minimizes reflection losses and enhances photon absorption.
Screen Printing of Contacts
Front and rear metal contacts are deposited, allowing individual cells to be interconnected into photovoltaic modules and solar panels.
Related Pages
- Solar Silicon Wafers and Backgrinding Services
- Solar Cells and Photovoltaic Devices
- Silicon Wafers
- 100mm Silicon Wafers
- 150mm Silicon Wafers
- 200mm Silicon Wafers
- Thin Silicon Wafers
- Semiconductor Device Manufacturing
- Thin Film Deposition Techniques
- Carrier Concentration in Silicon Wafers
- Materials Science and Semiconductor Engineering