Synthesis and Characterization of Sb&amp;lt;sub&amp;gt;65&amp;lt;/sub&amp;gt;Se&amp;lt;sub&amp;gt;35-x&amp;lt;/sub&amp;gt;Ge&amp;lt;sub&amp;gt;x&amp;lt;/sub&amp;gt; Alloys

Saleh, Saleh Ahmed

doi:10.4236/msa.2011.27127

Cited by 2 publications

(1 citation statement)

References 32 publications

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“…The value of the optical band gap E g decreases as the width of the localized state E e increases. This may be attributed to increasing the amount of Sb, causing the Sb-Sb bonds formation (bond energy = 30.22 kcal/mol [41]) and Sb-Se bond, which decreases the Se-Se bond concentration and leading to the E e increment (decrease of E g ) [42] (see the bond energy Table 4 [41]). The refractive index (n) data can be used to get the high-frequency dielectric constant ε by two different methods [43].…”

Section: The Analysis Of Absorption Coefficient and The Calculation O...mentioning

confidence: 99%

Investigation of the Optical Properties for Quaternary Se60−xGe35Ga5Sbx (x = 0, 5, and 10) Chalcogenide Glass

et al. 2022

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A quenching technique was used to prepare the chalcogenide system of the Se60−xGe35Ga5Sbx (x = 0, 5, and 10 at. %), which was deposited as thin films onto glass substrates using a thermal evaporation technique. X-ray diffraction patterns were used for structure examination of the fabricated compositions, which exposes the amorphous nature of the deposited samples. Meanwhile, the chemical compositions of the prepared samples were evaluated and calculated via the energy-dispersive X-ray spectroscopy (EDX), which was in agreement with the measured compositional element percentages of the prepared samples. Based on the optical reflectance R and transmittance T spectra from the recorded spectrophotometric data ranging from 350 to 2500 nm, the influence of the Sb element on the Se60−xGe35Ga5Sbx thin films’ optical properties was studied. The film thickness and the refractive index were calculated via Swanepoel’s technique from optical transmittance data. It has been observed that the films’ refractive index increases with increasing x value over the spectral range. The refractive index data were used to evaluate the dielectric constants and estimate dispersion parameters Eo and Ed using the Wemple–DiDomenico model. The optical energy gap Egopt was calculated for the tested compositions. The result of the optical absorption analysis shows the presence of allowed direct and indirect transitions.

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Section: The Analysis Of Absorption Coefficient and The Calculation O...mentioning

confidence: 99%

Investigation of the Optical Properties for Quaternary Se60−xGe35Ga5Sbx (x = 0, 5, and 10) Chalcogenide Glass

et al. 2022

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On Close Parallels between the Zintl-Based Superatom Ge₉Be and Chalcogen Elements

Xue

Chen

et al. 2021

Inorg. Chem.

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Ever since the concept of superatoms was brought forward in the 1990s, various specific types of clusters have been proposed to mimic atomic properties and enrich the "threedimensional periodic table". In this work, a Zintl cluster, namely, Ge 9 Be, has been certified eligible to join the superatom family, owing to its surprising similarity to chalcogen elements. Having 38 valence electrons, Ge 9 Be has an intrinsic desire to gain two additional electrons to achieve electronic shell closure, in which its quasi-chalcogen identity roots. Like oxygen-group elements, Ge 9 Be has the potential to form stable ionic compounds with lithium, beryllium, calcium, and superalkaline-earth atom FLi 3 . On the other hand, the combination of Ge 9 Be and the multiple valence superatom Al 7 − results in covalent compounds resembling carbon oxides. Close parallels have also been found between (Ge 9 Be) 2 -based compounds and common peroxides, further evidencing the superatom characteristics of Ge 9 Be. This finding puts forward an almost perfect superatom counterpart of group VIA elements and opens the door to characteristics-oriented design and synthesis of stable superatom motifs by utilizing solid Zintl clusters.

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Synthesis and Characterization of Sb<sub>65</sub>Se<sub>35-x</sub>Ge<sub>x</sub> Alloys

Cited by 2 publications

References 32 publications

Investigation of the Optical Properties for Quaternary Se60−xGe35Ga5Sbx (x = 0, 5, and 10) Chalcogenide Glass

Investigation of the Optical Properties for Quaternary Se60−xGe35Ga5Sbx (x = 0, 5, and 10) Chalcogenide Glass

On Close Parallels between the Zintl-Based Superatom Ge₉Be and Chalcogen Elements

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Synthesis and Characterization of Sb&lt;sub&gt;65&lt;/sub&gt;Se&lt;sub&gt;35-x&lt;/sub&gt;Ge&lt;sub&gt;x&lt;/sub&gt; Alloys

Cited by 2 publications

References 32 publications

Investigation of the Optical Properties for Quaternary Se60−xGe35Ga5Sbx (x = 0, 5, and 10) Chalcogenide Glass

Investigation of the Optical Properties for Quaternary Se60−xGe35Ga5Sbx (x = 0, 5, and 10) Chalcogenide Glass

On Close Parallels between the Zintl-Based Superatom Ge9Be and Chalcogen Elements

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Product

Resources

About

Synthesis and Characterization of Sb<sub>65</sub>Se<sub>35-x</sub>Ge<sub>x</sub> Alloys

On Close Parallels between the Zintl-Based Superatom Ge₉Be and Chalcogen Elements