Investigation of Key Technologies on Sapphire-Free Light Emitting Diodes for High-Power Blue/White Lighting
 

Major objectives of the highlight group (NCHU) are:

 
1. To develop epitaxial lift-off (ELO) techniques using a sacrificial layer;


2. To develop new wet-etching methodologies with exposure to the etchants;


3. To develop a recycling process for removing the residue from the sapphire substrate and obtaining a substantially uniform planar surface on the substrate;


4. To develop sapphire-free LED with low defects and high efficiency.


5. High performance packaging with optical and thermal designs.


6. To plan strategy for LED-related patents and technology transfers.
 

 

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