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

Enthalten in
Journal of the European Ceramic Society 
Volume
39
Issue
11
Start Page
3353
End Page
3363
Citation
Journal of the European Ceramic Society 11 (39): 3353-3363 (2019)
Publisher DOI
10.1016/j.jeurceramsoc.2019.04.028
Scopus ID
2-s2.0-85064758837
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 wavelengths of 1–5 μm, relevant for thermal radiation at temperatures around 1200 °C. These highly porous materials maintained their structural stability and reflectance after being annealed at 1200 °C for 120 h.
Schlagworte
photonic glas
yttrium-stabilized zirconia
broadband omnidirectional reflector
high-temperature photonics
Thermal barrier coating
DDC Class
530: Physik
620: Ingenieurwissenschaften