Self-assembled highly symmetrical ZnS nanostructures and their cathodoluminescence

Liu, Baoyu; Hu, Long; Tang, Chengchun; Liu, Lu; Li, Shaohua; Qi, Jigong; Liu, Yuhan

doi:10.1016/j.jlumin.2011.02.011

Cited by 9 publications

(5 citation statements)

References 19 publications

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“…The narrow peak and the small FWHM value indicate the superior optical properties of ZnS nanobelts. Although the 344 nm emission peak slightly deviates from the reported data concerning intrinsic band-to-band emission, 17 it is still consistent with the observed UV-emissions for the hexagonal ZnS phase. 18,19 The origin of the broad band in the visible range (∼527 nm) is rather complex and is still in debate.…”

Section: Resultssupporting

confidence: 86%

Local defect-induced red-shift of cathodoluminescence in individual ZnS nanobelts

et al. 2014

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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 nanostructure was proposed based on precise microstructure analyses on a ZnS nanobelt with atomic terrace growth fronts.

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Section: Resultssupporting

confidence: 86%

Local defect-induced red-shift of cathodoluminescence in individual ZnS nanobelts

et al. 2014

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“…The absorption spectra of investigated samples are shown in Figure 3. The onset of the absorption edge of ZnS is at 400 nm in the UV absorption region, corresponding to the band gap of 3.25 eV, which is slightly lower than the value usually reported (3.6-3.7 eV) [29,30]. This might be due to the synthesis procedure which resulted in defects that might decrease the band gap energy [11].…”

Section: Diffuse Reflectance Uv-visible Spectramentioning

confidence: 59%

Preparation of High Activity Ga and Cu Doped ZnS by Hydrothermal Method for Hydrogen Production under Visible Light Irradiation

Kimi

Yuliati

Shamsuddin

2015

Journal of Nanomaterials

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Ga(0.1),Cu(x)-ZnS (x=0.01, 0.03, 0.05) photocatalysts were successfully synthesized by hydrothermal method. The synthesized Ga and Cu codoped ZnS photocatalysts showed photocatalytic property effective for hydrogen production from aqueous solution containing Na2SO3and Na2S as sacrificial reagent under visible light irradiation. The rate of hydrogen production was found to be strongly dependent on Cu doping content. The highest photocatalytic activity is observed for Ga(0.1),Cu(0.01)-ZnS with hydrogen production rate of 114 µmol/h. The addition of Ga as codoped increased the photocatalytic activity to 58 times as compared to single doped Cu-ZnS. The Ga and Cu codoped ZnS photocatalysts are also stable under long irradiation. The enhancement in the photocatalytic activity of Ga and Cu codoped photocatalyst can be attributed to the synergistic effect between Ga and Cu. The photocatalytic activity was greatly enhanced with the addition of 0.5 wt% Ru as cocatalyst with a hydrogen production rate of 744 µmol/h.

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“…11,12 With the availability of single crystal X-ray structures, 13,14 extensive attention has been paid to the role of ligands in the syntheses and photophysical properties of gold nanoclusters with different nuclearities. 15,16 To obtain novel gold clusters with different photophysical properties, organic ligands such as thiols, phosphines and alkynes have been widely exploited in the syntheses of gold nanoclusters (Au n ) such as Au 8 , 17,18 Au 9 , 19 Au 11 , 20,21 Au 13 , [22][23][24][25][26][27] Au 18 , 27,28 Au 20 , 29,30 Au 22 , 31,32 Au 23 , 33 Au 24 , 34 Au 25 , 35,36 Au 32 , 37 Au 37 , 38 Au 44 , 39 Au 52 , 40 Au 55 , 41 and Au 102 . 13 Among all of the gold nanoclusters that have been structurally characterized, icosahedral Au 13 nanoclusters have been more extensively studied due to their highly symmetrical structure and prominent photoluminescence properties.…”

Section: Introductionmentioning

confidence: 99%

Halogen effects on the electronic and optical properties of Au₁₃nanoclusters

et al. 2020

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Self-assembled highly symmetrical ZnS nanostructures and their cathodoluminescence

Cited by 9 publications

References 19 publications

Local defect-induced red-shift of cathodoluminescence in individual ZnS nanobelts

Local defect-induced red-shift of cathodoluminescence in individual ZnS nanobelts

Preparation of High Activity Ga and Cu Doped ZnS by Hydrothermal Method for Hydrogen Production under Visible Light Irradiation

Halogen effects on the electronic and optical properties of Au₁₃nanoclusters

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Self-assembled highly symmetrical ZnS nanostructures and their cathodoluminescence

Cited by 9 publications

References 19 publications

Local defect-induced red-shift of cathodoluminescence in individual ZnS nanobelts

Local defect-induced red-shift of cathodoluminescence in individual ZnS nanobelts

Preparation of High Activity Ga and Cu Doped ZnS by Hydrothermal Method for Hydrogen Production under Visible Light Irradiation

Halogen effects on the electronic and optical properties of Au13nanoclusters

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Halogen effects on the electronic and optical properties of Au₁₃nanoclusters