Chemistry
A typical application is the thickness measurement of thin organic film on transparent substrates like glass or organic foils. For some applications opaque metallic films (e.g. Au) on transparent substrates are used as carriers for organic films.
In the last couple of IR ellipsometry has become very popular because of its sensitivity for very thin films and the absorption of characteristic molecule bonds, so the orientation of the molecules is able to be determined.
In the last couple of IR ellipsometry has become very popular because of its sensitivity for very thin films and the absorption of characteristic molecule bonds, so the orientation of the molecules is able to be determined.
Laser ellipsometer SE 400advanced - Highest available accuracy and sensitivity for the measurement of film thickness and refractive index
- Measurement of refractive index for films down to 2-3 nm film thickness
IR ellipsometer SE 900
- Spectral range: 2 µm – 25 µm
Measures:
- Chemical composition and structure of organics and dielectrics
- Film thickness, especially on rough substrates
- Molecule orientation
