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We have fabricated light emitting diodes based on a conjugated polymer, in which a planarized two-dimensional photonic crystal (PC) was inserted between the glass substrate and the ITO anode. Planarized PCs were fabricated into a high-index layer via interference lithography, followed by dry-etching and the spin-casting of a low-index glass. We characterize the electroluminescence (EL) emission from...
Thin Er 3+ , Yb 3+ co-doped Y 2 O 3 films were grown on (100) YAG substrates by pulsed laser deposition. Ceramic targets having different active ion concentration were used for ablation. The influence of the rare-earth content and oxygen pressure applied during the deposition on the structural, morphological and optical properties of the films were investigated. The...
We report a synthesis of polyaniline (PANI) suspension of particles with size of about 2–3nm. This nano-colloid was obtained by aniline oxidative polymerization in dilute and semi-dilute solutions of sodium poly(styrene sulfonate) (PSSNa) with molecular weight equal to 6800g/mol or higher. The ionic strength of the solution was about 1×10 −2 mol/l, which corresponds to aniline (and, respectively,...
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