I am looking for a material with a refractive index over the visible spectrum , which is close to the refractive index of Si, but which does not oxydise in air.
Do you know of any such material ?
Edit: Some more information. A optical reflector should be build from Si. I will not go into the detail, since it is irrelevant to the question, but I will provide all necessary information. The list is ordered according to importance:
- The complex refractive index should be close to Si over the entire visible spectrum
- The material should not oxydize in air
- The working conditions should be between -30°C to 60°C.
- Not necessary, but it would be great if epitaxy on single-crystal silicon is possible.