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Nanostructures improving cost-efficiency of solar cells
Black Silicon Solar
Rasmus Davidsen, DTU Nanotechwww.blacksiliconsolar.com
Agenda• Black Silicon Solar– Technology– Market and Business Plan
• Milestones for the project/company• Venture Cup 2011 Pitch (3 minutes)
Black Silicon SolarBlack Silicon Solar
What we do
Black Silicon SolarBlack Silicon Solar
Nanostructures = black
Black Silicon SolarBlack Silicon Solar
Black Silicon Texturing Approach• Apply nanostructures on solar cell:
• Replace 1 process step:
Black Silicon Solar
Comparison
Black Silicon Solar
Solar cells are still too expensive...
Sources: Nuclear, Coal: Parsons Brinckerhoff ”Powering the Nation” 2010Hydro, Wind, Solar: RENEWABLES GLOBAL STATUS REPORT 2011 , REN21
Nuclear
Coal
Hydro (la
rge sc
ale)
Wind (o
n-shore)
Solar
(Utility
Scale
)0
5
10
15
20
25
1112.8
4
7
23
Generating cost of electricity for different technologies
US
Cent
s pe
r kW
h
Black Silicon Solar
Black Silicon Solar
Need: Cell manufacturers must reduce manufacturing costs!
Market• Silicon solar market:
$50 BillionAddressable market: $700 Million
• Target Customers:
• Partners: Equipment manufacturers
Black Silicon Solar
Technology
Licensing fee
Equipment Manufacturing Partner
Customers:
Process comparisonTime min (% of total)
Cost % of total
Conventional Texturing 40 (14 %) 13 %Black Silicon 4 (2 %) 3 %Reduction, total in manufacturing
12% 10%
Black Silicon Solar
Customer Value• Reduces total manufacturing cost by 10%:
QCells 2010
Manufacturing Savings 10 US cents/Watt
Annual Production 900 MW
Annual Savings $90 Million
Black Silicon Solar
Status
• Lab-scale proof-of-concept (Technical University of Denmark)
• US Patent filed (June ‘11)
• Commercial Prototype (in progress, 6-12 months) Cost analysis (Hjalmar Nilsonne, Imperial College London)• GAP funding covering 6 months further R&D
Black Silicon Solar
MilestonesBachelor-project, DTU NanotechFall 2009
Grøn Dyst Competition, DTUJune 2010
World Future Energy Summit, Abu DhabiJanuary 2011
Cleantech Challenge 2011, London Business School
Venture Cup 2011(founding start-up company)
Master Project, DTU NanotechSeptember 2011 - March 2012
Further GAP-funded R&D, DTU NanotechApril-November 2012
?
Venture Cup 2011 Pitch
Rasmus Davidsen, DTU
Black Silicon Solar Cells
Black Silicon Solar Cells
Coal Gas Wind Solar Biomass Hydro Nuclear0
50
100
150
200
250
94.8
66.1
97
211
112.5
86.4
113.9
Energy Cost ($/MWh)
Silicon Black Silicon0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0.7
0.95
Absorption (%)
• More Efficient• 10 % Cheaper
Rasmus Davidsen, DTU
Business ModelRevenue from first customer
Gain of technology 10 US cents per Watt
25% cut of gain 2.5 US cents per Watt
Qcell production 900 MW
Cash need = 1.7 Million US $(1 year start-up period + patent)
Rasmus Davidsen, DTU
The Team• Rasmus Davidsen, M.Sc.-student, nanotech, DTU• Hjalmar Nilsonne, KTH, Sweden• Michael Stenbæk Schmidt, PhD, DTU Nanotech• Ole Hansen, Professor DTU Nanotech• Anja Boisen, Professor DTU Nanotech• Rolf Berg, Professor, Legal Adviser, DTU
• Competitive edge → Energy source of the futureOutlook
Rasmus Davidsen, DTU
Coal Gas Wind Black Silicon Solar Biomass Hydro Nuclear0
50
100
150
200
250
Energy Cost ($/MWh)Cost ($/MWh)
”Replace black gold with black silicon!”
Rasmus Davidsen, DTU
Thank you
Questions ?
