Title

Switching-on quantum size effects in silicon nanocrystals

RIS ID

96434

Publication Details

Sun, W., Qian, C., Wang, L., Wei, M., Mastronardi, M. L., Casillas, G., Breu, J. & Ozin, G. A. (2015). Switching-on quantum size effects in silicon nanocrystals. Advanced Materials, 27 (4), 746-749.

Abstract

The size-dependence of the absolute luminescence quantum yield of size-separated silicon nanocrystals reveals a "volcano" behavior, which switches on around 5 nm, peaks at near 3.7-3.9 nm, and decreases thereafter. These three regions respectively define: i) the transition from bulk to strongly quantum confined emissive silicon, ii) increasing confinement enhancing radiative recombination, and iii) increasing contributions favoring non-radiative recombination.

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Link to publisher version (DOI)

http://dx.doi.org/10.1002/adma.201403552