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Updated: May 24, 2026

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes
Published on: November 16, 2018
Modified spontaneous emission of organic molecules in-filled in inverse opals
Lier Deng1, Yongsheng Wang, Dawei He
1School of Optoelectronic Engineering, Xi'an Technological University, Xi'an 710032, China.
Abstract:
Inverse opals were prepared by replication of colloidal crystal templates made from silica spheres 298 nm in diameter. The air between the silica spheres was filled with the mixture of the monomer poly(methyl methacrylate) (PMMA) and the organic molecule Alq3 that can be subsequently polymerized. After removing the silica sphere templates, the photonic bandgap effect on the spontaneous emission of Alq3 were investigated. The dip in the fluorescence spectrum was interpreted in terms of redistribution of the photon density of states in the photonic crystal.
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