Visible-light-emitting devices using silicon nanocrystals

摘要

Since photoluminescence was observed from silicon nanocrystals, light-emitting diodes (LEDs) using Si nanocrystals have been expected to be realized for optoelectronic devices.We have successfully fabricated these LEDs on an ultrathin amorphous layer containing Si nanocrystals formed by simple techniques as used for standard Si devices. Orange luminescence from these LEDs was observed with the naked eye at room temperature.The operating voltage is low enough for application using a standard Si transistor.