Researchers at ASU have invented a method of using wide bandgap, optically transparent, lattice-matched, single crystal cubic MgSrO substrates that may be tuned to have a cubic structure with a lattice constant matched exactly to cubic GaN. Exact composition of the crystal can be adjusted for creation of crystals with specified atomic spacing. Wide bandgap allows crystals to operate at higher voltages, frequencies, and temperatures than conventional crystals. Familiar manufacturing techniques are used to grow these MgSrO substrates. This technique allows for the manufacture of perfectly lattice-matched single crystals with improved thermal and chemical stability, drastically improving performance of LED and LD devices. These lattices can also be matched with ScN and 3C-SiC substrates.
- LED and LD manufacture
- Power electronics
- Personal Electronics
- Health care
Benefits and Advantages
- Lower Costs – Familiar manufacturing methods are used to create crystals, so production can easily be implemented into existing processes.
- Efficiency – LEDs and LDs with these substrates have fewer morphological defects, making the diodes more efficient.
- Efficacy – Fewer morphological defects make LEDs and LDs more effective.
- Versatility– Exact composition of crystal substrates can be altered for each specific use.
- Stability – Improved chemical and thermal stability over standard crystals.
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