NanoFMF: Plastik og kvantemekanik

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NanoFMF Plastik og kvantemekanik

• Thomas Garm Pedersen
• Inst. for Fysik og Nanoteknologi
• Aalborg Universitet

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Discovery of conducting plastics
Alan Heeger
Alan G. MacDiarmid
Hideki Shirakawa
Nobel Prize in Chemistry 2000
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Polyacetylene and Polyethylene
Polyacetylene unsaturated
Polyethylene saturated
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Light emitting plastics at AAU
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Typical polymers
poly(para-phenylene-vinylene) poly(para-phenylene
)
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OLED design
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Understanding the color
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Quantum levels
Small space means large energy!
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Geometry and color
Blue (440 nm)
Green (500 nm)
Infrared (2500 nm)
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Polymers with rare-earth atoms
Polymer synthesized by AAU chemistry department
(D. Yu and K. Zhu)
New infrared emitting polymers?
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More Info
http//www.physics.aau.dk/tgp/oleds_tgp.pdf
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Quantum Physics
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Standing waves
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Waves in atomic chains
Discrete Schrödinger eq.
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Two atoms
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Four atoms
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Longer chains
Band gap
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Alternating chains
Band gap