Common Photovoltaic Cells Common Photovoltaic Cells and Cost Optimizationand Cost Optimization
OverviewOverview
Overview of solar power Overview of solar power Economic ProblemsEconomic Problems Crystalline PV CellsCrystalline PV Cells Thin Film PV CellsThin Film PV Cells
Solar EnergySolar Energy Certain materials absorb certain Certain materials absorb certain
wavelengths wavelengths The shorter the wavelength the The shorter the wavelength the
greater the energygreater the energy Ultraviolet light has more energy Ultraviolet light has more energy
than infrared lightthan infrared light Crystalline silicon Crystalline silicon
Utilizes all the visible spectrum Utilizes all the visible spectrum plus some infrared radiationplus some infrared radiation
Heat vs. electrical energyHeat vs. electrical energy Light frequencies that is too high Light frequencies that is too high
or too low for the semiconductor or too low for the semiconductor to absorb turn into heat energy to absorb turn into heat energy instead of electrical energyinstead of electrical energy
Solar EnergySolar Energy "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 The sun provides every day 10,000 times the day 10,000 times the energy needed on the energy needed on the planet planet
Abundant, Clean and Abundant, Clean and Secure Secure
Solar EnergySolar Energy
Solar Cell Production VolumeSolar Cell Production Volume
Economic Problems Economic Problems
Material CostMaterial Cost Process CostProcess Cost Module Module
EfficiencyEfficiency
Module SizeModule Size Module Module
Weight Weight Labor CostLabor Cost
Economic Problems Economic Problems
Crystalline Solar Cells Crystalline Solar Cells
Materials: Crystalline SiliconMaterials: Crystalline Silicon Grown into large single-crystal ingotsGrown into large single-crystal ingots Sawed into thin wafersSawed into thin wafers 2 wafers are bonded together (p-n 2 wafers are bonded together (p-n
junction)junction) Wafers grouped into panels or arraysWafers grouped into panels or arrays
Crystalline Solar CellsCrystalline Solar Cells
Crystalline Silicon ProcessCrystalline Silicon Process
Crystalline Silicon ProcessCrystalline Silicon Process
Crystalline PV Cell Cost Crystalline PV Cell Cost OptimizationOptimization
Material Efficiency Fabrication Line Scale
Crystalline PV Cell Cost Crystalline PV Cell Cost OptimizationOptimization
Thin Film Solar CellsThin Film Solar Cells
Thin Film Cost OptimizationThin Film Cost Optimization
Large area processing = low cost per area
Thin Film Cost OptimizationThin Film Cost Optimization
ConclusionConclusion Solar energy is one of the most Solar energy is one of the most
important for future energy resource important for future energy resource Crystalline and thin film PV cells are Crystalline and thin film PV cells are
the most common solar cells these the most common solar cells these daysdays
Cost optimization of PV cells is Cost optimization of PV cells is extremely important extremely important
Thank You!
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