Abstract

Rhodamine B (RB) doped photonic crystals (PCs) (RBPCs) are fabricated by introducing different concentrations of RB into PCs during the deposition procedure. Photoluminescence (PL) spectra of RBPCs show strong dependence on the dye concentrations and the corresponding stopbands of the PCs. Additionally, an obvious narrowing and enhancement of the emission are achieved with the increasing excitation intensity. These results indicate that a suitable combination of organic dye and the PC would offer a promising route towards low-threshold minilasers, light-emitting diodes and other optical applications.

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