Photonic properties of titania inverse opal heterostructures

Journal
Optical materials express  
Volume
3
Issue
8
Start Page
1007
End Page
1019
Citation
Optical Materials Express 8 (3): 1007-1019 (2013)
Publisher DOI
10.1364/OME.3.001007
Scopus ID
2-s2.0-84884200881
Publisher
OSA
Titania inverse opal heterostructures demonstrating two distinctive photonic stopgaps were fabricated by repetitive vertical selfassembly and atomic layer deposition (ALD). Angle resolved reflectance measurements of the inverse opal heterostructure are reported for the first time. The comparison with the spectra of constituents show that the GL stopgaps of the heterostructure obey the superposition principle and the angular dispersion of their stopgaps is well-fitted with the modified Bragg's law at low incidence angles. Numerical simulations were used to predict the dominant features in the reflectance spectra. The total (specular and diffuse) transmission and reflectance measurements of the single inverse opals and the heterostructure reveal that the diffuse scattering could severely impair the photonic properties of the buried layers in the multi-stack photonic crystal (PhC) configurations. Ascending stacking is proposed as a means to improve the performance of the multi-layer coatings. © 2013 Optical Society of America.
DDC Class
530: Physik