1 NanoFMF: Plastik og kvantemekanik Thomas Garm Pedersen Inst. for Fysik og Nanoteknologi Aalborg Universitet

2 Discovery of conducting plastics Alan Heeger Alan G. MacDiarmid Hideki Shirakawa Nobel Prize in Chemistry 2000

3 Polyacetylene and Polyethylene Polyacetylene: unsaturated Polyethylene: saturated

4 Light emitting plastics at AAU

5 Typical polymers poly(para-phenylene-vinylene) poly(para-phenylene)

6 OLED design

7 Understanding the color

8 Quantum levels Small space means large energy!

9 Geometry and color Blue (440 nm) Green (500 nm) Infrared (2500 nm)

10 Polymers with rare-earth atoms Polymer synthesized by AAU chemistry department (D. Yu and K. Zhu) New infrared emitting polymers?

11 More Info: http://www.physics.aau.dk/~tgp/oleds_tgp.pdf

12 Quantum Physics

13 Standing waves

14 Waves in atomic chains Discrete Schrödinger eq.

15 Two atoms

16 Four atoms

17 Longer chains Band gap

18 Alternating chains Band gap