Microscale white light emitters fabricated by two-photon polymerization lithography on functional resist

Abstract

Micrometric white light emitters were fabricated by applying two-photon polymerization (TPP) lithography to a chemically modified resist. Such a functional resist (FR) was doped with fluorescent molecules to turn it emitting into the whole visible region. The TPP has shown to be a versatile, low cost maskless technique capable to fabricate highly resolved structures in our FR's. The spectroscopic and chromaticity properties of the FR and fabricated microscale structures were investigated. Structures emitting high quality of white light were obtained and classified into two categories: physical and physiological white light emitters. Finally, a lifetime study was performed with the aim to apply such structures as light sources for on chip integrated photonic devices.