Selenide Glass Fibers for Biochemical Infrared Sensing

Lucas, Pierre; Bureau, Bruno

doi:10.1007/978-3-319-41190-3_8

Cited by 5 publications

(5 citation statements)

References 73 publications

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“…The enhanced index of refraction is suitable for many optical applications, decreasing the propagation losses and improving the light guidance. Mid-IR chalcogenide glass materials, including glassy As 2 S 3 , are widely applied in medical diagnostics, chemical and biological sensing, laser power delivery and defense applications − and would largely benefit from pressure-driven technologies.…”

Section: Resultsmentioning

confidence: 99%

Pressure-Driven Chemical Disorder in Glassy As₂S₃ up to 14.7 GPa, Postdensification Effects, and Applications in Materials Design

et al. 2019

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A small difference in energy between homopolar and heteropolar bonds and the glass-forming ability of pure chalcogens leads to unexpected trends in densification mechanisms of glassy chalcogenides compared to vitreous oxides. Using high-precision compressibility measurements and in situ high-energy X-ray diffraction up to 14.7 GPa, we show a new densification route in a canonical glass As2S3. After the first reversible elastic step with a maximum pressure of 1.3 GPa, characterized by a strong reduction of voids and cavities, a significant bonding or chemical disorder is developed under higher pressure, reaching a saturation of 30% in the population of As–As bonds above 8–9 GPa. The pressure-driven chemical disorder is accompanied by a remarkable structural relaxation and a strongly diminished optical gap and determines structural, vibrational, and optical properties under and after cold compression. The decompressed recovered glass conserves a dark color and exhibits two relaxation processes: (a) fast (a few days) and (b) slow (months/years at room temperature). The enhanced refractive index of the recovered glass is promising for optical applications with improved functionalities. A nearly permanent red shift in optical absorption after decompression can be used in high-impact-force optical sensors.

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Section: Resultsmentioning

confidence: 99%

Pressure-Driven Chemical Disorder in Glassy As₂S₃ up to 14.7 GPa, Postdensification Effects, and Applications in Materials Design

et al. 2019

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“…Chalcogenides are semiconductor materials and have a good optical property which is an adjustable band gap energy between 1 eV and 3 eV depending on their compositions, good thermal and electrical properties [1,2]. They can be synthesized in amorphous or crystalline form [3].…”

Section: Introductionmentioning

confidence: 99%

The C–V characteristics of the Cu2WSe4/p-Si heterojunction depending on wide range temperature

Koçyiğit

Küçükçelebi

Sarılmaz

et al. 2019

J Mater Sci: Mater Electron

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Cu 2 WSe 4 nanosheets were synthesized by hot-injection method and employed as interfacial layers between the p-Si and Au metal via spin coating technique. The capacitance-voltage (C-V) and conductance-voltage (G-V) measurements were performed on the Cu 2 WSe 4 /p-Si heterojunction device depending on wide range temperatures from 80 to 400 K by 40 K steps. The device exhibited decreasing capacitance behavior with increasing temperature at the inversion region because of the interface states and series resistance. The conductance values increased with increasing temperature owing to increasing free charge carriers. The series resistance (R s ) and interface states density (N ss ) were extracted from C-V and G-V measurements and discussed in the details. The results highlighted that the electrical parameters are a strong function of the voltage and temperature. The Au/Cu 2 WSe 4 /p-Si device can be employed for controllable capacitor applications.

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“…Because of wide transparency window up to 20 μm accompanied by low phonon absorption, good chemical durability, and glass-forming ability, the ChG provide an excellent platform for modern fiber-optic amplifiers and mid-IR lasers [4, 5]. …”

Section: Introductionmentioning

confidence: 99%

“…Glassy-like compounds of chalcogens (i.e., S, Se, Te) with some elements from IV-V groups of the periodic table (typically Ge, As, Sb, Bi), also known as chalcogenide glasses (ChG) [ 1 , 2 ], compose a promising class of functional media for modern optoelectronics and IR optics [ 2 – 5 ]. Because of wide transparency window up to 20 μm accompanied by low phonon absorption, good chemical durability, and glass-forming ability, the ChG provide an excellent platform for modern fiber-optic amplifiers and mid-IR lasers [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Rare-Earth Doping on Free-Volume Nanostructure of Ga-Codoped Glassy (As/Sb)2Se3

Shpotyuk

2017

Nanoscale Res Lett

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Subsequent stages of atomic-deficient nanostructurization finalizing rare-earth functionality under Pr3+-doping in Ga2(As0.28Sb0.12Se0.60)98 glass are studied employing method of positron annihilation lifetime spectroscopy. Genesis of free-volume positron trapping sites, composed of atomic-accessible geometrical holes (void cores) arrested by surrounding atomic-inaccessible Se-based bond-free solid angles (void shells), are disclosed for parent As2Se3, Ga-codoped Ga2(As0.40Se0.60)98, as well as Ga-codoped and Sb-modified Ga2(As0.28Sb0.12Se0.60)98 glasses. The finalizing nanostructurization due to Pr3+-doping (500 wppm) in glassy Ga2(As0.28Sb0.12Se0.60)98 is explained in terms of competitive contribution of changed occupancy sites available for both rare-earth ions and positrons.

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Selenide Glass Fibers for Biochemical Infrared Sensing

Cited by 5 publications

References 73 publications

Pressure-Driven Chemical Disorder in Glassy As₂S₃ up to 14.7 GPa, Postdensification Effects, and Applications in Materials Design

Pressure-Driven Chemical Disorder in Glassy As₂S₃ up to 14.7 GPa, Postdensification Effects, and Applications in Materials Design

The C–V characteristics of the Cu2WSe4/p-Si heterojunction depending on wide range temperature

Effect of Rare-Earth Doping on Free-Volume Nanostructure of Ga-Codoped Glassy (As/Sb)2Se3

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Selenide Glass Fibers for Biochemical Infrared Sensing

Cited by 5 publications

References 73 publications

Pressure-Driven Chemical Disorder in Glassy As2S3 up to 14.7 GPa, Postdensification Effects, and Applications in Materials Design

Pressure-Driven Chemical Disorder in Glassy As2S3 up to 14.7 GPa, Postdensification Effects, and Applications in Materials Design

The C–V characteristics of the Cu2WSe4/p-Si heterojunction depending on wide range temperature

Effect of Rare-Earth Doping on Free-Volume Nanostructure of Ga-Codoped Glassy (As/Sb)2Se3

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Pressure-Driven Chemical Disorder in Glassy As₂S₃ up to 14.7 GPa, Postdensification Effects, and Applications in Materials Design

Pressure-Driven Chemical Disorder in Glassy As₂S₃ up to 14.7 GPa, Postdensification Effects, and Applications in Materials Design