(Georgia Institute of Technology, 2010-10-12)
Idacavage, Mike J.
High refractive index (RI) materials, especially radiation curable high RI materials, have been
used for light management in a wide variety of optical, photovoltaic, photonic and electronic
applications. Recently, there have been fast growing demands for new materials with even
higher RI, and better performance while also being halogen-free due to increasing
environmental concerns. Achieving equivalent RI without the use of halogenated materials is
a big challenge. Cytec has developed a series of halogen-free, UV-curable high refractive
index materials including inorganic-organic hybrid Nanocomposite containing aromatic
urethane (meth) acrylate oligomers. These materials have refractive indices in the range of
nD20 = 1.58 – 1.65 (liquid) and good optical transparence, making them ideal for display and
photovoltaic applications.