<P> A high - refractive - index polymer (HRIP) is a polymer that has a refractive index greater than 1.50 . </P> <P> Such materials are required for anti-reflective coating and photonic devices such as light emitting diodes (LEDs) and image sensors . The refractive index of a polymer is based on several factors which include polarizability, chain flexibility, molecular geometry and the polymer backbone orientation . </P>

A high-refractive-index polymer (hrip) is a polymer that has a refractive index greater than _