Nanocrystallites in Bi–As–S system

Voynarovych, Ivan M.; Pinzenik, V. P.; Makauz, I. I.; Shiplyak, M.; Kökényesi, S.; Daróczi, Lajos

doi:10.1016/j.jnoncrysol.2006.10.073

Cited by 6 publications

(13 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of cesium is necessary for stabilization of the glass because the composition “BiAsS 3 ” (when n = 1) does not form a stable glass or a crystalline compound and instead comprises a mixture of crystalline Bi 2 S 3 and glassy As 2 S 3 . A recent study by Voynarovych et al also failed to stabilize Bi 2 S 3 /As 2 S 3 glasses . In the present study, stable glasses of Cs n –1 BiAs n S 2 n +1 were obtained with n ≥ 3.…”

Section: Resultssupporting

confidence: 50%

Crystalline and Glassy Phases in the Cs/Bi/As/S System

et al. 2013

View full text Add to dashboard Cite

The quaternary Cs2S/Bi/As/S system was studied in an attempt to introduce two different asymmetric but isoelectronic building units, namely, [Bi(III)(x)S(y)] and [As(III)(x)S(y)], in a single structure. Reactions with a comparatively lower equivalent of arsenic in the Cs2S/Bi/As/S mixture led to the crystalline compound Cs3Bi(AsS4)2. The structure features tetrahedral [As(V)S4](3-) connected to Bi(III) centers to give infinite (1/∞)[Bi(AsS4)2(3-)] chains. When the basicity was raised in these low arsenic fluxes by increasing the Cs2S fraction, the crystalline compound Cs9Bi(AsS4)4, also featuring [As(V)S4](3-) anions, was formed. On the other hand, arsenic-rich mixtures of Cs2S/Bi/As/S led to the formation of the glassy phase Cs2BiAs3S7, which contains As(III) species. X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and pair distribution function (PDF) analysis indicate the presence of As(III)-containing [AsnS2n+1] fragments in the glass structure. Several glasses in the series Cs(n-1)BiAs(n)S(2n+1) were also prepared using solid-state fusion reactions. The band gaps of the Cs(n-1)BiAs(n)S(2n+1) glasses are in the range of 1.51-1.81 eV, while that of the crystalline compound Cs3Bi(AsS4)2 is ~2.33 eV. The thermal and optical behaviors of these compounds are correlated with their structures and building units.

show abstract

Section: Resultssupporting

confidence: 50%

Crystalline and Glassy Phases in the Cs/Bi/As/S System

et al. 2013

View full text Add to dashboard Cite

show abstract

“…The additional requirements imposed by electronics and non-linear optics and the development of memory devices for high density optical and electrical recording have generated interest in the problem of structure formation and stimulated structural transformations at the nanometer scale [1]. In particular, bismuth sulfide (Bi 2 S 3 ) is one of the most essential members, since it can served as a promising candidate for photovoltaic converters due to its low energy gap and has been used widely in thermoelectric cooling technologies [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…(DhQ)1/2 vs hȞ of Bi/As 2 S 3 films. Solid State Physics: Proceedings of the 56th DAE Solid State Physics Symposium 2011 AIP Conf.…”

mentioning

confidence: 99%

Effect of thickness on the optical properties change in Bi/As2S3 bilayer thin films

Naik¹,

Kumar²,

Ganesan³

et al. 2012

AIP Conference Proceedings

View full text Add to dashboard Cite

Measurement of the refractive index dispersion of As2Se3 bulk glass and thin films prior to and after laser irradiation and annealing using prism coupling in the near-and mid-infrared spectral range Rev. Sci. Instrum. 82, 053103 (2011); 10.1063/1.3587616 Synthetic melanin thin films: Structural and electrical properties Abstract. Bilayer thin films of Bi/As 2 S 3 were prepared from Bi and As 2 S 3 by thermal evaporation technique under high vacuum. We have prepared three bilayer films of 905nm, 910nm and 915nm thickness with with As 2 S 3 as bottom layer (900nm) and Bi as top layer (5,10,15 nm). We have compared the optical changes due to the thickness variation of Bi layer on As 2 S 3 film. The changes were characterized by FTIR and XPS techniques.

show abstract

“…It is also distinct that the absorption edge shifts toward longer wavelength with the addition of Bi, and it is mainly ascribed to the smaller band gap of Bi 2 S 3 (E g = 1.3 eV) compared with that of pure GeS 2 -Ga 2 S 3 chalcogenide glasses (E g ∼ 2.5 eV). [17] Fig. 1.…”

mentioning

confidence: 99%

“…In Ref. [17], it has been shown that they are characteristic for the vibrations of [BiS 3 ] tetrahedral s.u. From the discussion mentioned above, it can be deduced that the structure of 80GeS 2 -20Ga 2 S 3 :xBi chalcogenide glasses is as follows.…”

mentioning

confidence: 99%

Broadband Infrared Luminescence from Bismuth-Doped GeS ₂ -Ga ₂ S ₃ Chalcogenide Glasses

Dong

Xiao

Ren

et al. 2008

Chinese Phys. Lett.

View full text Add to dashboard Cite

Near-infrared luminescence is observed from bismuth-doped GeS2-Ga2S3 chalcogenide glasses excited by an 808 nm laser diode. The emission peak with a maximum at about 1260 nm is observed in 80GeS2-20Ga2S3:0.5Bi glass and it shifts toward the long wavelength with the addition of Bi gradually. The full width of half maximum (FWHM) is about 200 nm. The broadband infrared luminescence of Bi-doped GeS2-Ga2S3 chalcogenide glasses may be predominantly originated from the low valence state of Bi, such as Bi + . Raman scattering is also conducted to clarify the structure of glasses. These Bi-doped GeS2-Ga2S3 chalcogenide glasses can be applied potentially in novel broadband optical fibre amplifiers and broadly tunable laser in optical communication system.

show abstract

Nanocrystallites in Bi–As–S system

Cited by 6 publications

References 4 publications

Crystalline and Glassy Phases in the Cs/Bi/As/S System

Crystalline and Glassy Phases in the Cs/Bi/As/S System

Effect of thickness on the optical properties change in Bi/As2S3 bilayer thin films

Broadband Infrared Luminescence from Bismuth-Doped GeS ₂ -Ga ₂ S ₃ Chalcogenide Glasses

Contact Info

Product

Resources

About

Nanocrystallites in Bi–As–S system

Cited by 6 publications

References 4 publications

Crystalline and Glassy Phases in the Cs/Bi/As/S System

Crystalline and Glassy Phases in the Cs/Bi/As/S System

Effect of thickness on the optical properties change in Bi/As2S3 bilayer thin films

Broadband Infrared Luminescence from Bismuth-Doped GeS 2 -Ga 2 S 3 Chalcogenide Glasses

Contact Info

Product

Resources

About

Broadband Infrared Luminescence from Bismuth-Doped GeS ₂ -Ga ₂ S ₃ Chalcogenide Glasses