Supplementary information: The red and blue luminescence in siliconnanocrystals with oxidized, nitrogen-containing shellPavel Galár,a Tomáš Popelár,a Josef Khun,b Irena Matulková,c Ivan Nemec,c Katerina Dohnalova Newell,d AlenaMichalcová,b Vladimír Scholtz,b and Katerina Kusováa

500 nm

SEM Si O N

un

mo

difi

ed

AlC FeCu

Fig. S1 EDS maps of other than the elements of interest for the unmodified sample.

300 400 500 600 7000

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unmodified modified PAW

tran

sm

itta

nce (

%)

wavelength (nm)

Fig. S2 Measured transmittance of the unmodified and modified samples, respectively, and of the plasma activated water.

a Institute of Physics, Czech Academy of Sciences, Cukrovarnická 10, Prague 6, 162 00, Czech Republic.b University of Chemistry and Technology, Technická 3, Prague, 166 28, Czech Republic.c Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 43, Prague 2, Czech Republic.d University of Amsterdam, Institute of Physics, Science Park 904, 1098 XH Amsterdam, The Netherlands.

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Electronic Supplementary Material (ESI) for Faraday Discussions.This journal is © The Royal Society of Chemistry 2019

388 nm 420 nm 502 nm

Fig. S3 Example fits of the PL of the unmodified sample excited with 315 nm. The emission wavelength are noted at each panel.

Fig. S4 The PL map and the fitted β parameter of the stretched-exponential component of the modified sample. Excited with 315 nm.

10-2 -1 32energy (eV)

DO

S (

a.u

.)

Si -OH, -O-NH235 2

6-1

R =

1.0

´ 1

0 s

SiOHN

Fig. S5 Density of states and real-space localization of an Si nanoparticle with partly −O−NH2-terminated surface. The insets are 3D real-spacelocalizations for the two energy states indicated by the gray dashed lines.

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Fig. S6 The PL map of and fitted characteristics of the PAW under 315-nm excitation.

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