Effect of temperature on the structure and luminescence properties of Ag0.05Ga0.05Ge0.95S2-Er2S3 glasses

ОПТИЧЕСКИЕ СВОЙСТВА СТЕКОЛ Ag28Ga28Ge532Er2S1123 И Ag12Ga12Ge228Er2S483

“…However, no PL was detected in the visible spectral range when excited by 800 nm wavelength. This is due to the fact that anti-Stokes PL (under 980 nm excitation) is associated with the absorption of two photons by Er 3+ ions which are promoted from the ground state 4 the excitation at 800 nm has higher energy compared to 980 nm, the absorption of two photons promotes erbium ions to the excited state 2 H 9/2 ( 4 I 15/2 + hn 800 → 4 I 9/2 + hn 800 → 2 H 9/2 ) located above the absorption edge (Fig. 2) in the conduction band.…”

“…The most commonly used RE is erbium that has an intensive emission band near 1.5 μm and low energy losses in fiber optics at this wavelength. Additionally, erbiumdoped crystalline and amorphous materials can be used as active media in laser technology [1], displays, optical amplifiers, photonic devices [2], non-contact temperature [3,4] and g-irradiation sensors [5,6,7].…”

“…Phase equilibria in the reciprocal system AgGaS 2 + GeSe 2 Û AgGaSe 2 + GeS 2 were investigated, and the glass formation region was determined [8]. An In our previous works on these glasses, we investigated the main structural units of the glass-forming matrix by Raman spectroscopy, as well as photoluminescence spectra under excitation by 532 and 980 nm wavelengths [4,9]. Partial clustering of erbium ions was established from EPR and static magnetization studies, and the effect of g-irradiation on glass photoluminescence was analyzed [5].…”

NON-CONTACT OPTICAL THERMAL SENSORS BASED ON (Ga54.59In44.66Er0.75)2S300 SINGLE CRYSTALS

“…Отримання нових матеріалів і дослідження їх властивостей є одним із основних напрямків сучасного матеріалознавства. Введення до бінарних, тернарних сполук [1][2][3] легуючих домішок, зокрема рідкісноземельних металів [4][5][6], створює передумови для виготовлення активних і пасивних середовищ в лазерній техніці та телекомунікаціях. Особливу увагу науковці приділяють властивостям кристалічних та аморфних середовищ, які здатні стабільно проявляти фотолюмінесценцію (ФЛ) високої інтенсивності та нелінійно-оптичні властивості [7,8].…”

Electrical transport of chalcogenide glassy system: interpretation by Hunt’s model and microstructure

“…Chalcogenide glassy system is particularly important because of its considerable applications in the field of infrared spectroscopy, lower phonon energy, high value of non-linear refractive indices and excellent glass-forming ability [1][2][3][4]. Chalcogenide glassy system exhibits higher electrical conductivity than their oxide counterparts as the high polarizability of sulfur or selenium plays vital role in the conduction process [5][6][7]. Recent works [7] exhibit that higher electrical conductivity of silver doped glassy systems should be favourable to enhance lifetime of battery material.…”