Modulation of optical properties (transmittance, reflectance, absorbance)

The total transmittance of an optical system is defined as the ratio of the intensity of the transmitted radiation to the incident intensity and is measured at different wavelengths. It depends on the absorbance and reflectance properties of the material.

Materia Nova designs thin monolayers of organic and inorganic materials with a controlled optical gap. Combinations of these thin layers give interference effects, absorbances, reflectance and optimized optical transmissions in UV, visible and IR.

Applications: UV and IR filter layers - Low E (low emissivity) glasses.

Most common treatments on precision optical instruments: anti-reflective (AR), high reflection (mirror) treatments, separator and filter treatments. In organic electronics, organic materials with optical gaps and controlled optical transitions defining the absorption or emission range of the materials.

Our strengths

  • Materia Nova distinguishes itself by offering deposition methods that combine both dry and wet deposition with control over the chemical nature of the layers, their number, thickness, refractive index at the interfaces and the structure of the stacks.
  • Equipment for the measurement of total optical transmission (specular + diffuse), absorbance and reflectance.
  • Synergy between optical properties and other properties such as electrical conduction (e.g. figure of merit of transparent electrodes)
  • An approach combining theory and experience (DFT calculations, optical transition probability measurements, theoretical and experimental absorption spectra) for the control of light emission or absorption in organic semiconductors.