Table 1

Raman peak for relaxed (phonon confinement model) and embedded (experimental) Ge nanocrystals and estimated hydrostatics stress

Sample

Nanocrystal distribution

Ge-Ge phonon peak position

Stress

Diameter (nm)

FWHM (nm)

Density (cm-2)

Experimental (embedded) (cm-1)

Phonon confinement (relaxed) (cm-1)

P (GPa)

A-800

7.1

2.6

3.5 × 1011

301.5

297.4

1.2

A-900

13

6

2.6 × 1011

301.2

298.4

0.8

F-800

3.9

2.1

5.8 × 1012

303.3

294.2

2.6

F-900

10

4

1.3 × 1012

302.7

297.9

1.4

Ray et al. Nanoscale Research Letters 2011 6:224   doi:10.1186/1556-276X-6-224