Two-dimensional materials with a planar lattice, a suitable direct band-gap, high and highly anisotropic carrier mobility are desirable for the development of advanced field-effect transistors. Here we predict three thermodynamically...

Graphitic C 3 N 4 (g-C 3 N 4 ) has seldom been used for white light-emitting diode (LED) phosphors due to its low solid-state fluorescence quantum yield. Here, we report a facile thermal condensation path for the synthesis of g-C 3 N 4 nanotubes stuffed with quantum dots. The g-C 3 N 4 nanotubes have a high fluorescence quantum yield of 30.92% in the solid state. Nitrogen-rich and graphitic carbon-free features are responsible for the enhanced quantum efficiency. The photoluminescence quantum yield can be controlled and improved by the reaction temperature. We finally demonstrate white light emission by coating the highly solid-luminescent g-C 3 N 4 nanotubes as phosphors onto a 370 nm ultraviolet LED.

Two-dimensional materials with negative Poisson’s ratio, known as auxetic materials, are of great interest owing to the improved mechanical properties, which enables plenty of advanced nanomechanical devices. Here, by first-principle...

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Elementary B in binary metal borides forms varied polymetric configurations due to its electron-deficient nature. Here we predict a new pressure-stabilized boron clathrate structure, LaB8, that is recoverable to ambient...