Modification of emission intensity of light emitters can have promising applications in sensing and imaging. Photonic crystals when incorporated with light emitters can lead to tuning of their emission intensity with respect to the relative positioning of the photonic bandgap and excitation or emission maxima of the light emitter. Herein we have prepared a carbon dot embedded self assembled photonic crystal structure. Their structural and optical characterizations were performed and the modification of optical emission from carbon dots when embedded in a photonic crystal matrix was analyzed using laser induced fluorescence technique.
Photonic quasicrystals (PQCs) have neither true periodicity nor translational symmetry, however they can exhibit
symmetries that are not achievable by conventional periodic structures. The arbitrarily high rotational symmetry of these
materials can be practically exploited to manufacture isotropic band gap materials, which are perfectly suitable for
hosting waveguides or cavities. In this work, formation and development of the photonic bandgap (PBG) in twodimensional
8-, 10- and 12-fold symmetry quasicrystalline lattices of low dielectric contrast (0.4-0.6) were measured in
the microwave region and compared with the PBG properties of a conventional hexagonal crystal. Band-gap properties
were also investigated by changing the direction of propagation of the incident beam inside the crystal. Various angles of
incidence from 0° to 30° were used in order to investigate the isotropic nature of the band-gap.
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