|Local defect-induced red-shift of cathodoluminescence in individual ZnS nanobelts|
|B. D. Liu; B. Yang; B. Dierre; T. Sekiguchi; X. Jiang
|Abstract||The luminescence of semiconductor nanostructures is strongly dependent on their size, dimensions, morphology, composition, or defects, and their band emissions can be properly and selectively tailored through the rational manipulation of these parameters during material growth. Using spatially-resolved cathodoluminescence spectroscopy, monochromatic contrast maps and high-resolution transmission electron microscopy, an obvious red-shift of the near-band-edge emission of wurtzite ZnS nanobelts, resulting from a strip of stacking faults or a zinc-blende phase with tens of atomic layers in width, has been observed and its related mechanism has been discussed. This finding is not specific to the defect-dependent optical properties tailoring of ZnS nanostructures and represents a general validity for clarifying the mechanism of peak-shift ( band-gap expansion or shrinking) of a wide range of semiconductor nanostructures with various defects. In addition, the general formation mechanism of the belt-like nano-structure was proposed based on precise microstructure analyses on a ZnS nanobelt with atomic terrace growth fronts.|
|description.department||[liu, b. d.
; yang, b.
; jiang, x.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [dierre, b.
; sekiguchi, t.] natl inst mat sci, wpi ctr mat nanoarchitecton mana, tsukuba, ibaraki 3050044, japan.
; liu, bd (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china.
B. D. Liu,B. Yang,B. Dierre,et al. Local defect-induced red-shift of cathodoluminescence in individual ZnS nanobelts[J]. Nanoscale,2014,6(21):12414-12420.
B. D. Liu,B. Yang,B. Dierre,T. Sekiguchi,&X. Jiang.(2014).Local defect-induced red-shift of cathodoluminescence in individual ZnS nanobelts.Nanoscale,6(21),12414-12420.
B. D. Liu,et al."Local defect-induced red-shift of cathodoluminescence in individual ZnS nanobelts".Nanoscale 6.21(2014):12414-12420.
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