Fe doped silicon oxynitride microwires: Surface plasmon polariton enhanced fluorescence and tunable long-wavelength red-emission

We synthesized unexplored activator-Fe doped silicon oxynitride microwires by a simple CVD method. This microwire can generate SPP when induced by photons/electrons. It exhibits three significant features, a stable emission peak, the ability to act as a plasmon nonlinear laser and displays mutual light beams interference. The absorption and external quantum efficiency of the Fe doped silicon oxynitride are 73.2% and 51.8%, respectively. Upon controlling the O/N ratio, the emission band can be tuned from 670 nm to 735 nm.