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(a) Cross section and top view of an organic PC on a membrane. (b) The molecular structures of and DCM2 used as active materials of the PC. (c) SEM images of a fabricated PC with a nanocavity consisting of a missing air hole in a triangular lattice; the lattice constant and the radius of the air hole are 320 and , respectively.
The dispersion relation of a 2D PC consisting of an organic/ membrane with air holes. Structural parameters are , , , and . The band gap for the TE-like mode is obtained in the range from .
(a) PL spectra from different areas; , , and represent the nanocavity area in the PC pattern (, ), the PC pattern area near the nanocavity, and unpatterned area, respectively. (b) PL spectra of PCs with values of . The spectral peak shifts to longer wavelength with .
(a) PL spectra of PCs with four reduced air holes, which have radii in the range from . The lattice constant and the radius of the regular hole are 340 and , respectively. The dotted line shows the band edge obtained from PWE calculation of a PC with and . (b) SEM images of the fabricated PCs with the modified nanocavities corresponding to the measured PL spectra.
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