Transcript Common Photovoltaic Cells and Cost Optimization

Common Photovoltaic Cells
and Cost Optimization
Overview
 Overview
of solar power
 Economic Problems
 Crystalline PV Cells
 Thin Film PV Cells
Solar Energy
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Certain materials absorb certain
wavelengths
 The shorter the wavelength the
greater the energy
 Ultraviolet light has more energy
than infrared light
Crystalline silicon
 Utilizes all the visible spectrum
plus some infrared radiation
Heat vs. electrical energy
 Light frequencies that is too high
or too low for the semiconductor
to absorb turn into heat energy
instead of electrical energy
Solar Energy
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"I'd put my money on
the sun and solar
energy. What a source
of power! I hope we
don't have to wait until
oil and coal run out
before we tackle that."–
Thomas Edison, 1931.
The sun provides every
day 10,000 times the
energy needed on the
planet
Abundant, Clean and
Secure
Solar Energy
Solar Cell Production Volume
Economic Problems
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Material Cost
Process Cost
Module Efficiency
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Module Size
Module Weight
Labor Cost
Economic Problems
Crystalline Solar Cells
 Materials:
Crystalline Silicon
 Grown into large single-crystal ingots
 Sawed into thin wafers
 2 wafers are bonded together (p-n
junction)
 Wafers grouped into panels or arrays
Crystalline Solar Cells
Crystalline Silicon Process
Crystalline Silicon Process
Crystalline PV Cell Cost Optimization
Material Efficiency
Fabrication Line Scale
Crystalline PV Cell Cost Optimization
Thin Film Solar Cells
Thin Film Cost Optimization
Large area processing =
low cost per area
Thin Film Cost Optimization
Conclusion
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Solar energy is one of the most important for
future energy resource
Crystalline and thin film PV cells are the most
common solar cells these days
Cost optimization of PV cells is extremely
important
Thank You!