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Quantum confinement in Si and Ge nanostructures
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10.1063/1.3680884
/content/aip/journal/jap/111/3/10.1063/1.3680884
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/3/10.1063/1.3680884

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Disordered Si-QW data and theoretical fit. Experimental data from Ref. 28. Theoretical fit using A = 0.89 and  = 1.6 eV in Eq. (3). NB: The CBM shift is offset by the .

Image of FIG. 2.
FIG. 2.

(Color online) Crystalline Si-QW data and theoretical fit. Experimental data from Ref. 22. Experimental PL data from Ref. 30. Theoretical fit using A = 0.35 and  = 1.12 eV in Eq. (3). NB: The CBM shift is offset by the .

Image of FIG. 3.
FIG. 3.

(Color online) Crystalline and amorphous Si-QD data and theoretical fit. “Expt. Ion-Implantion SiO2” refers to crystalline Si QDs embedded in SiO2 from Ref. 31. “Expt. microwave plasma decomposition (MPD) SiO2” refers to crystalline Si QDs embedded in SiO2 from Ref. 21. “Expt. plasma enhanced chemical vapor deposition (PCVD) SiN” refers to amorphous Si QDs embedded in SiN from Ref. 35. Theoretical fit using A = 3.57 and 1.39 and  = 1.12 or 1.56 eV (as labeled) in Eq. (3). NB: The absorption data is offset by the .

Image of FIG. 4.
FIG. 4.

(Color online) Crystalline Si Q-wire and QD data and theoretical fit. Experimental por-Si wire data from Ref. 39. Experimental Si Wire data from Ref. 40, using scanning tunneling spectroscopy (STS). Experimental por-Si QD data from Refs. 38 and 42. Theoretical fit using A = 1.39 and 0.81 and  = 1.12 eV in Eq. (3). NB: The absorption data is offset by the . NB: “QD” here refers to spheroids.

Image of FIG. 5.
FIG. 5.

(Color online) Crystalline Ge-QD data and theoretical fit. Experimental Ge QDs data from Ref. 43. Experimental Ge absorption data from Ref. 44. Theoretical fit using A = 2.69 and  = 0.66 eV in Eq. (3).

Image of FIG. 6.
FIG. 6.

(Color online) Comparison of the E G as a function of QD diameter for Si and Ge. Reprinted figure with permission from C. Bulutay, Phys. Rev. B 76, 17 (2007). Copyright 2007 by the American Physical Society. References for the works listed in figure are given in Ref. 51.

Tables

Generic image for table
Table I.

Parameter A given in Eq. (3) for 3D, 2D, 1D confinement and for ΔE CBM , ΔE VBM .

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/content/aip/journal/jap/111/3/10.1063/1.3680884
2012-02-08
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Quantum confinement in Si and Ge nanostructures
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/3/10.1063/1.3680884
10.1063/1.3680884
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