Synthesis and Optical Properties of Tetrapod‐Like ZnSSe Alloy Nanostructures

Xu, Haiyang; Liang, Yao; Liu, Zhuang; Zhang, Xitian; Hark, S. K.

doi:10.1002/adma.200800821

Cited by 52 publications

(41 citation statements)

References 32 publications

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“…Thick specular yellow films were obtained at 350˚C using 1:1 and to ZnS peak at 306 cm −1 [47]. Other peaks are similar to those observed for the films obtained from 1:1 mixture.…”

Section: P-xrd Of Znsse Thin Filmssupporting

confidence: 73%

Composition and Band Gap Controlled AACVD of ZnSe and ZnSxSe1-x Thin Films Using Novel Single Source Precursors

Alghamdi¹

2017

MSA

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Polycrystalline thin films of ZnSe and ZnS x Se 1−x have been deposited on glass substrates by Aerosol Assisted Chemical Vapour Deposition (AACVD) from bis(diethyldiselenocarbamato)zinc(II) and a 1:1 and 1:0.75 mixtures of bis(diethyldiselenocarbamato)zinc(II) and bis(diethyldithiocarbamato)zinc (II) as precursors. All films were characterized by p-XRD, SEM, EDX, Raman spectroscopy, photoluminescence (PL and UV/Vis spectroscopy. The band gap of pure ZnSe thin films was found to be 2.25 whereas the band gap of ZnS x Se 1−x films varied from 2.55 to 2.66 eV depending on the sulfur content in the films. PL emission spectra showed a clear blue shift for ZnS x Se 1−x films compared to ZnSe due to the sulphur content in the films which increase the band gap. The band gap of ZnSSe can be controlled by sulfur to selenium ratio in the alloy. The morphology of the ZnSe thin films changed from small randomly shaped crystallites to triangles whereas the morphology of ZnS x Se 1−x was mainly based on cuboids.

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“…Thick specular yellow films were obtained at 350˚C using 1:1 and to ZnS peak at 306 cm −1 [47]. Other peaks are similar to those observed for the films obtained from 1:1 mixture.…”

Section: P-xrd Of Znsse Thin Filmssupporting

confidence: 73%

Composition and Band Gap Controlled AACVD of ZnSe and ZnSxSe1-x Thin Films Using Novel Single Source Precursors

Alghamdi¹

2017

MSA

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“…A similar effect was also observed in Cu 2− x Se nanocrystals . However, variation in chalcogen composition is another important strategy to modulate the physical and chemical properties of copper chalcogenide‐based multinary semiconductors and some other systems such as ZnS x Se 1− x , CdS x Se 1− x , PbS x Se 1− x , Mo(S x Se 1− x ) 2 , and CdSe x Te 1− x …”

Section: Introductionsupporting

confidence: 56%

Controllable Synthesis of Bandgap‐Tunable CuS_xSe_1−x Nanoplate Alloys

Xia

Yang

et al. 2015

Chemistry An Asian Journal

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Composition engineering is an important approach for modulating the physical properties of alloyed semiconductors. In this work, ternary CuS(x)Se(1-x) nanoplates over the entire composition range of 0≤x≤1 have been controllably synthesized by means of a simple aqueous solution method at low temperature (90 °C). Reaction of Cu(2+) cations with polysulfide/-selenide ((S(n)Se(m))(2-)) anions rather than independent S(n)(2-) and Se(m)(2-) anions is responsible for the low-temperature and rapid synthesis of CuS(x)Se(1-x) alloys, and leads to higher S/Se ratios in the alloys than that in reactants owing to different dissociation energies of the Se-Se and the S-S bonds. The lattice parameters 'a' and 'c' of the hexagonal CuS(x)Se(1-x) alloys decrease linearly, whereas the direct bandgaps increase quadratically along with the S content. Direct bandgaps of the alloys can be tuned over a wide range from 1.64 to 2.19 eV. Raman peaks of the S-Se stretching mode are observed, thus further confirming formation of the alloyed CuS(x)Se(1-x) phase.

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“…It can be seen that the S/Se ratios of the resulting nanosheets are close to those of their corresponding precursors (TAA and Se powder) which indicates that the relative reactivity between them is well balanced and that the current synthetic strategy allows for delicate control of the stoichiometry of ZnS 1−x Se x nanosheets. 27,28 The lattice parameters of ZnS 1−x Se x NCs were then determined from the XRD data and the relationship between the lattice parameters and the chemical composition of ZnS 1−x Se x nanosheets is displayed in Fig. S7 †) were carried out to investigate the surface composition; it was found that the surface S : Se ratio approaches 0.37 : 0.63, which is consistent with the results of XRD and EDX.…”

supporting

confidence: 71%

“…We also observed that the XRD peaks successively shifted to lower 2θ values as the Se content increased, suggesting that the lattice constants of ZnS 1−x Se x nanosheets become larger when the S atoms are gradually replaced by the larger Se atoms. 27,28,34 Together, these tunable optical properties not only indicate the complete composition tunability of ZnS 1−x Se x nanosheets but also demonstrate that tunable bandgaps (2.62-3.66 eV) could be obtained. 3b.…”

mentioning

confidence: 73%

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Facile synthesis of ternary homogeneous ZnS_1−xSe_x nanosheets with tunable bandgaps

Sun

Chen

et al. 2014

CrystEngComm

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The rational design and synthesis of ternary two-dimensional alloy nanocrystals with a non-layered structure are still a challenge.Here, we show, for the first time, the synthesis of homogeneous ternary ZnS 1−x Se x nanosheets by thermal decomposition of lamellar inorganic-organic hybrid precursors. The morphology, composition and crystal structure of ZnS 1−x Se x nanosheets have been thoroughly investigated. We also found that the lattice constants and bandgaps of ZnS 1−x Se x nanosheets could be easily tuned via alteration of the Se/S ratio. Our work provides a facile and effective strategy to synthesize homogeneous multinary non-layered chalcogenide nanosheets with tunable compositions and bandgaps.CrystEngComm, 2014, 16, 6823-6826 | 6823This journal is

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Synthesis and Optical Properties of Tetrapod‐Like ZnSSe Alloy Nanostructures

Cited by 52 publications

References 32 publications

Composition and Band Gap Controlled AACVD of ZnSe and ZnS<sub>x</sub>Se<sub>1-x</sub> Thin Films Using Novel Single Source Precursors

Composition and Band Gap Controlled AACVD of ZnSe and ZnS<sub>x</sub>Se<sub>1-x</sub> Thin Films Using Novel Single Source Precursors

Controllable Synthesis of Bandgap‐Tunable CuS_xSe_1−x Nanoplate Alloys

Facile synthesis of ternary homogeneous ZnS_1−xSe_x nanosheets with tunable bandgaps

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Synthesis and Optical Properties of Tetrapod‐Like ZnSSe Alloy Nanostructures

Cited by 52 publications

References 32 publications

Composition and Band Gap Controlled AACVD of ZnSe and ZnS&lt;sub&gt;x&lt;/sub&gt;Se&lt;sub&gt;1-x&lt;/sub&gt; Thin Films Using Novel Single Source Precursors

Composition and Band Gap Controlled AACVD of ZnSe and ZnS&lt;sub&gt;x&lt;/sub&gt;Se&lt;sub&gt;1-x&lt;/sub&gt; Thin Films Using Novel Single Source Precursors

Controllable Synthesis of Bandgap‐Tunable CuSxSe1−x Nanoplate Alloys

Facile synthesis of ternary homogeneous ZnS1−xSex nanosheets with tunable bandgaps

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Composition and Band Gap Controlled AACVD of ZnSe and ZnS<sub>x</sub>Se<sub>1-x</sub> Thin Films Using Novel Single Source Precursors

Composition and Band Gap Controlled AACVD of ZnSe and ZnS<sub>x</sub>Se<sub>1-x</sub> Thin Films Using Novel Single Source Precursors

Controllable Synthesis of Bandgap‐Tunable CuS_xSe_1−x Nanoplate Alloys

Facile synthesis of ternary homogeneous ZnS_1−xSe_x nanosheets with tunable bandgaps