Module 2 : Systems under technological importance

Lecture 13 : Organic Light Emitting Diodes

 

First report on Thin Film Electroluminescence

Mg:Ag – 10:1
Luminescent film - 600 A°
Diamine – 750A°

 

 

 

• Relatively High voltage (80-100 V)
- Inject charge into organic crystals
• Low work function alloy-cathode
• Organic layers, cathode were vacuum deposited.

C.W. Tang & S.A. VanSlyke , Kodak Research Laboratories