Advancing the fabrication of YSZ-inverse photonic glasses for broadband omnidirectional reflector films

Jefferson Jean Do Rosário, Quynh Yen Häntsch, Robert M. Pasquarelli, Pavel N. Dyachenko, Eleonora Vriend, Alexander Petrov, Kaline P. Furlan, Manfred Eich & Gerold A. Schneider
A single-step and all-colloidal deposition method to fabricate yttrium-stabilized zirconia (YSZ)-inverse photonic glasses with 3 μm pores was developed. The process is based on electrostatic attraction and repulsion in suspension, controlled by surface charge of polystyrene (PS)microspheres and YSZ nanoparticles, used as pore templates and matrix material, respectively. The pH was used as a tool to change surface charges and particle-particle interactions. Photonic glass films with 3 μm pores yielded broadband omnidirectional reflection over the...
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