TITLE

Stimulated emission in a nanostructured silicon pn junction diode using current injection

AUTHOR(S)
Chen, M. J.; Yen, J. L.; Li, J. Y.; Chang, J. F.; Tsai, S. C.; Tsai, C. S.
PUB. DATE
March 2004
SOURCE
Applied Physics Letters;3/22/2004, Vol. 84 Issue 12, p2163
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Stimulated emission at bandgap energy of 1.1 eV was observed in a silicon nanostructured pn junction diode using current injection at room temperature. Nonuniform diffusion using spin-on boron dopant mixed with silicon dioxide nanoparticles was used to fabricate the device. The spatial confinement of carriers through such localization structures contributes to the enhancement of the stimulated emission. The experimental results show a drastic increase in the optical power and multiple spectral peaks at wavelengths longer than the main peak of spontaneous emission through various phonon-assisted radiative recombination processes. When the injection current significantly exceeds a threshold, a single peak dominates, exhibiting stimulated emission. © 2004 American Institute of Physics.
ACCESSION #
12530478

 

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