The Solar Revolution: Finally . . . It Begins Photon International, - - PowerPoint PPT Presentation

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The Solar Revolution: Finally . . . It Begins Photon International, - - PowerPoint PPT Presentation

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The Solar Revolution: Finally . . . It Begins Photon International, December, 2007 Thin-Film PV Companies (USA) a-Si/Thin-Si CdTe CIS Uni-Solar MI First Solar OH Global Solar AZ Applied Materials CA PrimeStar Solar CO

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The Solar Revolution: Finally . . . It Begins

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Photon International, December, 2007

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Thin-Film PV Companies (USA)

a-Si/Thin-Si

Uni-Solar – MI Applied Materials – CA Power Films – IA Energy PV – NJ MV Systems – CO XsunX – CA OptiSolar – CA Signet Solar – CA Nano PV – NJ MWOE Solar – OH Proto Flex – CO New Solar Ventures – NM Innovalight – CA Nanogram – CA Soltaix – CA Xunlight Corp. - OH

CdTe

First Solar – OH PrimeStar Solar – CO AVA Solar – CO Solar Fields – OH Canrom – NY Ascentool – CA Nuvo Solar Energy – CO Zia Watt Solar – TX Solexant – CA Bloo Solar – CA

CIS

Global Solar – AZ Miasole – CA Energy PV – NJ Ascent Solar – CO ISET – CA ITN/ES – CO Daystar – NY Nanosolar – CA Heliovolt – TX Solo Power – CA Solyndra – CA RESI – NJ Light Solar – NV Ampulse – TN Stion – CA

Organic

Konarka – MA Plextronix – PA GPEC – NJ LumoFlex – GA MicroFab – TX Luna Innovations – VA

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4 5 6 7 8 9 1 2 3 4

Energy (eV)

Terrestrial solar spectrum

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4 5 6 7 8 9 1 2 3 4

Energy (eV)

Single-junction cells respond to a specific portion of the solar spectrum

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in

4 5 6 7 8 9 1 2 3 4

Energy (eV)

Multijunction cells use multiple materials to more fully match the solar spectrum

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Concentrator Photovoltaics

Shifts the major system cost from the cell to the optics Can afford more efficient, expensive cells

solar cell

Flat Plate Concentrator

lens or mirror

Use optics to reduce the cell area (from 2 to more than 1000 times)

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CPV Companies (USA)

Triple-Junction High Efficiency

(cells/modules/systems)

Spectrolab - CA Emcore - NM MicroLink Devices - IL Opel International - CT

Modules/Systems

Amonix - CA JX Crystals - WA SolFocus - CA Practical Instruments - CA Stellaris - MA Soliant - CA Energy Innovations - CA Midway Labs - IL Prism Solar Technologies - NY Enfocus Engineering - CA Solaria - CA Cool Earth Solar - CA Greenvolts Inc. - CA

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CPV Systems

www.amonix.com

Solar Systems

(reflective)

www.solarsystems.com.au

Amonix

(refractive)

www.Solfocus.com

Solfocus

(reflective &

  • ptical rod)
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Low-Profile CPV Systems

www.energyinnovations.com

Energy Innovations (800-suns)

www.soliant-energy.com

Commercial rooftops and utility targeted Soliant Energy (500-suns)

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100% 74% 68% 54% 49% 44% 39% 31% 0% 58% multiple junction (n ∞ ) hot carrier, MEG Intermediate band, impurity PV, up-con- verters impact ionisation down converters single-junction cell

{

thermal, thermo PV (TPV), thermionics (multiple junction (n = 6) (multiple junction (n = 3) (multiple junction (n = 2) Efficiency

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CSG Solar approach . high-T silicon . high-density contacts . good optics . deposit then process

Polycrystalline Thin Film

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CSG Solar approach . high-T silicon . high-density contacts . good optics . deposit then process

  • excellent structure for

innovation value-added

(multiple junction, quantum dot technology)

Polycrystalline Thin Film

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100nm 100nm

0 1.2 1.4 1.6 1.8 2.0

Photon Energy (eV)

5nm (270s) 4nm (240s) 3nm (180s) 2nm (120s)

Normalized PL Spectra

(2-5 nm dots, 300K)

Si quantum dot photoluminescence

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