Raspberry Solar Cells Ben Taylor Interdisciplinary Education Group University of Wisconsin-Madison.

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Presentation transcript:

Raspberry Solar Cells Ben Taylor Interdisciplinary Education Group University of Wisconsin-Madison

ENERGY?

Electricity

ENERGY? Electrons Electricity Electrons

ENERGY? Electricity

CATHODE (+) BARRIER ANODE (-)

BARRIER ANODE (-) CATHODE (+)

ANODE (-) CATHODE (+) BARRIER

A Carbon-Based Solar Cell 2D-Graphene1D-Carbon Nanotubes Strongest material known – Carbon nanotubes are 300 times stronger than steel. Exceptional electronic properties – Grow metallic and semiconducting. – 1000 times more conductive than copper. – We can use carbon nanotubes to absorb light and generate electricity!

How do the Layers in a Solar Cell Work? Raspberry/TiO 2 Carbon NanotubesMaterial Function Light Absorber Charge Extraction Electrode

Silicon (25%) CNTs (1%) Arnold Group Raspberry (0.5-1%) TechnologyFirst Report>1% EfficiencyTime Silicon years Polymer1950s1986≈35 years CNTs years