Question

Background info:

-Trying to generate ozone from a small UV LED.

-The target wavelength is 100-240nm.

- Must be small and compact

Question:

Can you vary the wavelength produced by increasing the current or voltage? I currently have a UV LED that will produce 250nm but need to get below 240nm (higher intensity)

If not, then can ozone be generated in other ways that do not involve electrical arcs?

Thanks

Answer 1

Solution:

No. The wavelength of light emitted by the LED is tuned based on the bandgap of the material used to produce it. In other words, it is set by the material used to produce the LED. By changing the voltage, the most you can do is change is Brightness.

Electrolytic Ozone Production if one of the methods we can generate ozone gas

Ozone can be produced directly in water using electrolytic ozone generators. This has huge advantages as the contacting equipment normally required for dissolving ozone gas into water is not required.Electrolytic ozone generators use an electrical discharge in the water to split the water molecule (H2O) into H2 + O2. This O2 can also be split into O and combine to create O3. This will require a method to isolate oxygen from hydrogen and electrically charge this oxygen into ozone. Much work has been done working with catalysts, anodes and cathodes to improve efficiencies. However, this method is still unreliable in any water other than ultra-pure water, and is energy inefficient.