German and Canadian scientists create high-efficiency silicon-based LEDs
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KIT scientists have discovered that by using monodisperse nanoparticles of different sizes, the color of the light emitted by the diode can be changed. It can be tuned from the deep red spectral region to the orange spectral region, and the external quantum efficiency can also reach 1.1%.
It is worth mentioning that the resulting silicon-based LEDs have surprisingly long-term stability that has never been achieved before. The increase in the life of the operating components is due to the use of only nanoparticles of the same size, which effectively enhances the stability of sensitive thin film components, while oversized particles that can cause short circuits are excluded.
In addition, the eye-catching aspect of the new LED is also the homogeneity of its illuminating area. Researchers say that as liquid-treated silicon-based LEDs can be made at low cost and in large quantities, nanoparticle “groups†will enter new areas, and the potential will be difficult to estimate, while textbooks on semiconductor components may also be described. Will be rewritten. 