Publisher DOI: 10.1021/am404180y
Title: Vertical convective coassembly of refractory ysz inverse opals from crystalline nanoparticles
Language: English
Authors: Kubrin, Roman 
Rosário, Jefferson J. do 
Lee, Hooi Sing 
Mohanty, Sweety 
Subrahmanyam, Raman 
Smirnova, Irina  
Petrov, Alexey 
Petrov, Alexander  
Eich, Manfred 
Schneider, Gerold A. 
Keywords: 3D photonic crystal; High-temperature photonics; Inverse opal; Nanoparticle codeposition; Vertical convective self-assembly; Yttrium-stabilized zirconia
Issue Date: 9-Dec-2013
Publisher: American Chemical Society
Source: ACS Applied Materials and Interfaces 24 (5): 13146-13152 (2013)
Abstract (english): 
A facile deposition method of 3D photonic crystals made of yttrium-stabilized zirconia (YSZ) was developed. YSZ nanoparticles with primary particle size below 10 nm and cubic crystalline phase were synthesized by hydrothermal treatment of solutions of zirconyl nitrate, yttrium nitrate and acetylacetone. Before coassembly with polystyrene (PS) microspheres, a dispersant Dolapix CE64 was added to the dialyzed sol of YSZ nanoparticles to render their surface negatively charged. Vertical convective coassembly resulted in 3D ordered YSZ/PS hybrid films, which were inverted at 500 C in air to produce inverse opals. The linear shrinkage of the coatings was in the range 15-20%, below previously reported values for YSZ. The obtained coatings demonstrated pronounced photonic properties and retained their ordered structure after annealing at 1000 C for 2 h. Increasing the filling fraction of crystalline nanoparticles in the templates should enable production of fully functional 3D photonic crystals for applications in high-temperature photonics. © 2013 American Chemical Society.
ISSN: 1944-8244
Journal: ACS applied materials & interfaces 
Institute: Keramische Hochleistungswerkstoffe M-9 
Optische und Elektronische Materialien E-12 
Thermische Verfahrenstechnik V-8 
Document Type: Article
Project: SFB 986: Teilprojekt C2 - Keramikbasierte hochtemperaturstabile Wärmestrahlungsreflektoren und Strukturfarben 
SFB 986: Teilprojekt C4 - Deposition, Ordnung und mechanische Stabilität von Beschichtungen aus assemblierten Partikeln mit enger Größenverteilung 
SFB 986: Teilprojekt C5 - Oxidische Hochtemperatur-Schutzschichtsysteme mittels angepasster Porenstruktur 
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