Extremely efficient sky-blue organic electroluminescence with external quantum efficiency of ≈37% is achieved in a conventional planar device structure, using a highly efficient thermally activated delayed fluorescence emitter based on the spiroacridine-triazine hybrid and simultaneously possessing nearly unitary (100%) photoluminescence quantum yield, excellent thermal stability, and strongly horizontally oriented emitting dipoles (with a horizontal dipole ratio of 83%).

This article proposes W-band OFDM RoF system at 103.5 GHz employing envelop detector (ED) down-conversion. It can support vector signal down-conversion and doesn't need the LO in BS. The data rate of W-band OFDM signals with 10-GHz bandwidth can achieve 40 Gbps over 25-km fiber and 2-m wireless transmission.

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