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Strain-induced optical absorption properties of semiconductor nanocrystals
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10.1063/1.4811222
/content/aip/journal/jcp/138/24/10.1063/1.4811222
http://aip.metastore.ingenta.com/content/aip/journal/jcp/138/24/10.1063/1.4811222

Figures

Image of FIG. 1.
FIG. 1.

Dependence of the lattice strain of PbS nanocrystals on solid size: (a) nanospheres, (b) nanocubes, and (c) nanorods. The atomic diameter = 0.297 nm.

Image of FIG. 2.
FIG. 2.

Comparison of theoretical predictions (solid lines) with experimental measurements and calculations (symbols) of the band gap shift for PbS nanocrystals: (a) nanospheres, (b) nanocubes, and (c) nanorods. Note that the case in (c) is the PbS nanowires (); the aspect ratio (lateral vs perpendicular size) ranges for the PbS nanocubes cited from Ref. in (c) between 2 and 3.

Image of FIG. 3.
FIG. 3.

(a) The relationship between the relative shift of band gap and strain of PbS nanospheres, nanocubes, and nanorods (). (b) Dependence of absorption coefficient of three types of PbS nanocrystals on size under the condition of incident wavelength at 400 nm.

Image of FIG. 4.
FIG. 4.

The relationship among the absorption coefficient and incident wavelength as well as crystal size for PbS nanocrystals: (a) nanospheres, (b) nanocubes, and (c) nanorods.

Tables

Generic image for table
Table I.

The absorption coefficient of PbS nanocrystals with different shapes at 400 nm.

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/content/aip/journal/jcp/138/24/10.1063/1.4811222
2013-06-24
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Strain-induced optical absorption properties of semiconductor nanocrystals
http://aip.metastore.ingenta.com/content/aip/journal/jcp/138/24/10.1063/1.4811222
10.1063/1.4811222
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