[ppt]slide 1 - university of california, berkeleycse.ssl.berkeley.edu/energy/resources/solar...
TRANSCRIPT
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Energy from the Sun Workshop
Emerging Technologies and Current Solar Energy
Research
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Goals of Solar Technology Research• Improve efficiency• Improve overall cost and cost-per-
kWh• Reduce impact of materials used• Improve viability in less sunny
conditions
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Areas of Research and New Technology• Passive solar heating• Active solar water heating• Electrical power generation
– Concentrated solar– Photovoltaics
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Newer Technologies• Solar Thermal Vacuum Tubes• Solar Thermal Troughs• Solar Stirling Engines• Tracking Solar Heliostats• Thin-film Flexible Photovoltaics• Multi-junction Photovoltaics• Vehicle-to-Grid Technologies• Space-based Photovoltaics
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Solar Vacuum Tubes (water heating)
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Trough Concentration (Kramer Junc.)
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Concentrated Photovoltaics
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Tracking Photovoltaic Heliostats
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Improving Photovoltaics• First-generation (silicon)
– Thin c-Si via epitaxial growth– Crystallized polysilicon layers– Nanoscale silicon
• Second-generation (“thin film”)– Less efficient, more flexible and less
expensive than 1st gen– CdTe and CIGS
• Third-generation– Solar ink, solar dye, conductive plastic
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Flexible Thin-Film Photovoltaic
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Multi-junction Photovoltaics
Color Film
Multi-junction photovoltaic cell
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Multi-junction Photovoltaics
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Multi-junction Photovoltaics
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Improved Efficiencies
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Photovoltaic Electric Vehicle-to-Grid
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Space-based Solar Photovoltaics
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For More InformationIf you have questions, we have answers:• www.need.org – our website• [email protected] – questions about
NEED• [email protected] – questions about
this workshop• 1-800-875-5029 – NEED main office
phone number