Gallium Nitride (GaN) for blue LEDs?

Do you know how Gallium Nitride (GaN) plays a big role in blue LED lightings?

Gallium Nitrid (GaN) is not only used for blue LED, but, as SiC, it is widely used for next generation wide band gap semiconductor devices.

Unlike Si or SiC, it cannot be created as a wafer.

Instead it is epitaxial grown, as a thin film, on a Si or Sapphire substrate.

Therefore, if you want to evaluate the thermal conductivity of GaN, you must evaluate as thin film.

Engineers are researching high purity GaN crystals these days also.

But it could be created in a small amount only.

Thermal Microscope (TM) could evaluate GaN in either forms.

We cannot share the actual results from our clients in details, but as we measured GaN, the values were very similar to the literature values.

TM could evaluate the samples with high spatial resolutions.

It could also evaluate the thin film samples as well.

If you are interested, please take a look at Thermal Microscope (TM).

eigyo@bethel.co.jp