nanocrystal solar cell nanopaint ™ for solar car
DESCRIPTION
Nanocrystal Solar Cell NanoPaint ™ for Solar Car. Sarah Swisher, Huai -Yuan Michael Tseng, Kyle Braam. Outline. Motivation: the Global Energy Crisis Review current PV technology Inorganic Nanocrystal solar cell Benefits Research results Future potential - PowerPoint PPT PresentationTRANSCRIPT
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Nanocrystal Solar Cell NanoPaint™ for Solar Car
Sarah Swisher, Huai-Yuan Michael Tseng, Kyle Braam
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OutlineMotivation: the Global Energy CrisisReview current PV technologyInorganic Nanocrystal solar cell
BenefitsResearch resultsFuture potential
NanoPaint™ for charging electric vehicles
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Global Energy IssuesLimited supply of fossil fuelsEnergy securityPolitical instabilityEconomicsEnvironmental: CO2, global warming,
pollution…. all this combined with an increasing
population!
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Hydroelectric
Tide
Wind
Geothermal
Solar
0.1
1.5
15.0
150.
0
1,50
0.0
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00.0
150,
000.
0
1
2
4
12 120,000
Global Renewable Energy Resources (TW)
Solar energy that strikes the earth’s surface per hour: 4.3 x 1020 JWorld energy consumption in one year: 4.1 x 1020 J
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Solar Cell Operation
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Figures of MeritOpen circuit voltage, VOC
Short circuit current, ISC
Energy conversion efficiency, ηThermodynamic efficiency limitQuantum efficiency, EQE and IQEMaximum power point, PMAX
Fill Factor, FF
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EE235Courtesy of L.L. Kazmerski, NREL
PV Progress in Research
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TECHNOLOGY DETAILSNanocrystal Solar Cell
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What are nanocrystals ?
2 ~ 10 nm10 ~ 50 atoms
Eg
1S(e)
1P(e)
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Why Nanocrystals Solar Cell?
Low-Cost
Large area
Flexible substrate
Solution process
Printing
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Assumption in Shockley-Queisser
Approach which circumvents assumption
ExamplesTheoretical efficiency
One photon = one electron-hole pair
Multiple absorption path solar cells
Impact ionization 42%
One quasi-Fermi level separation
Multiple energy level solar cells
Intermediate bandQuantum well solar cells 87%
Constant temperature = cell temperature = carrier temperature
Multiple temperature solar cells.
Hot carrier solar cells 66%
Why Nanocrystals Solar Cell ?
30%
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P3HT/CdSe nanorods Hybrid
Wendy U. Huynh, Janke J. Dittmer, A. Paul Alivisatos. Science 295, 2425 (2002)
poly-3(hexylthiophene)
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CdTe/CdSe nanorods
Gur I, Fromer N. A, Geier M. L, Alivisatos A. P. Science 2005; 310: 462-465.
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CIGS Nanoparticle Precursor
Inkjet printable
Roll-to-Roll
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CIGS Nanoparticle Precursor
Vijay K. Kapur*, Ashish Bansal, Phucan Le, Omar I. Asensio. Thin Solid Films 431 –432 (2003) 53–57
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CIGS Nanoparticle Precursor
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ComparisonP3HT/CdSe NR CdTe/CdSe NR CIGS NP
Isc (mA/cm2) 5.7 13.2 37.3 37.9Voc (V) 0.7 0.45 0.52 0.44
Fill Factor 0.4 0.49 0.71 0.61Efficiency (%) 1.7 2.9 13.6 10.1
Substrate ITO/Glass ITO/Glass Glass Mo foil
Printability Poor Poor Good (inkjet/screen printing)
Temperature Low Medium MediumReliability Non-stable Air stable Air Stable
Environmental Unfriendly Unfriendly Friendly
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APPLICATIONNanoPaint™ for Solar Car
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Solar Car
North American Solar ChallengeCars drive at speed limit: 65 mphWinning time: 51 hours, 41 minutes, and 53
seconds
University of Michigan Solar car University of California Berkeley Solar Car
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Solar Electric Vehicles Astrolab solar concept car from Venturi
Electric
Solar cells: 21% efficient1 Day of sun=11 miles
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Solar Electric Vehicles 1992 Mazada 929 Luxury Sedan
Solar cells run fan to cool car and can recharge the car’s battery
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Solar Electric Vehicles2010 Prius
Solar roof package: $3,600Powers fan to cool the interior by 20 degreesOnly available for certain models
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Solar Electric VehiclesSolar Electric Vehicle photovoltaic module
16% efficient, 215 Watts1 Day of sun =range of 5 to 8 miles $4,000
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Solar Electric VehiclesDisadvantages of models
Cost: single crystallineWeightStructure
Solution:Solar Cells based on CIGS nanoparticles“Solar Cell NanoPaint™”
Source: http://www.cartuningcentral.com/how-to-paint-a-car
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Solar Cell NanoPaint™
Our painting process of the CIGS nanoparticle on the solar car was covered by
National Geographic Channel
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Solar Cell NanoPaint™Market Comparison
Solar Electric Vehicles
Solar CellNanoPaint™
Optimized Solar Cell NanoPaint™
Material Single Crystalline CIGS Nanoparticle CIGS NanoparticleEfficiency 16% 10% 19%
Weight Moderate low LowArea 1.507 m2 7.67 m2 7.67 m2
Lifetime Long-20 years long-20 years Long-20 yearsPower Output 215 Watts 767 Watts 1457 WattsDriving range 5-8 Miles 18-28 Miles 34-51 MilesEnvironmental
Hazardmoderate Low Low
Cost $4,000 low-$2000 Lower-$1500
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Solar Cell NanoPaint™ Market Analysis
Increasing hybrid electric vehicle sales will drive demand for Solar Cell NanoPaint™
Market Analysis
Market Hybrid Electric vehicles
Total number of Vehicles in the US 247 Million
Number of Hybrid Vehicles currently available in US
1-2 Million
Revenue Assuming 1% Conversion of Available Hybrids
40 Million Dollars
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Hybrid Sales In the US
Source: http://www.cartuningcentral.com/how-to-paint-a-car
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ConclusionPhotovoltaicsNanoparticle Systems
P3HT/CdSeCdTe/CdSeCIGS nanoparticle
CIGS NanoPaint™ Solar CellSolar hybrid electric vehicle