Size-Dependent Photoluminescence Efficiency of Silicon Nanocrystal Quantum Dots

We show that with proper accounting of polydispersity and size-dependent quantum yields and optical absorption the effective mass approximation accurately estimates the average diameter of silicon nanocrystals from experimentally determined PL emission peak energies

Yixuan Yu; Gang Fan; Andrea Fermi; Raffaello Mazzaro; Vittorio Morandi; Paola Ceroni; Detlef-M. Smilgies; Brian A. Korgel

2017

Key concepts

Scholarcy highlights

  • Photoluminescence spectra were measured for dodecene-capped Si nanocrystals with a wide range of average diameters, from 1.8 to 9.1 nm
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  • We show that with proper accounting of polydispersity and size-dependent quantum yields and optical absorption the effective mass approximation accurately estimates the average diameter of silicon nanocrystals from experimentally determined PL emission peak energies
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