Sn-induced changes in the structure and optical properties of amorphous As–Se–Sn thin films for optical devices

Enhancing the third-order nonlinearity and crystallinity by selenium incorporation in tin sulfide films (SnS1−xSex) for optoelectronic applications

“…This property makes thin films of smaller bandgaps suitable for solar applications and thermal systems. 45 The slope of the graph gives the ‘ B ’ value, which is inversely proportional to the degree of disorder. It is observed from Table 2 that ‘ B ’ increases with selenium doping.…”

“…The cohesive energy of the present system is calculated using heteronuclear and homonuclear bonds based on the chemical bond approach. The heteronuclear bond energy is calculated from the relation: 45 C(A–B) = [C(A–A) × C(B–B)] 1/2 + 30( χ A − χ B ) 2 where χ A and χ B are the electro-negativity values of the constituent elements Sn, S, and Se, having the values of 1.88, 2.58, and 2.55, respectively. The homonuclear bond energies of Sn–Sn, S–S, and Se–Se are 44.71, 53.8, and 44.04 kcal mol −1 , respectively.…”

Attenuation characteristics of high-energy radiation on As-Se-Sn chalcogenide glassy alloy

“…We have studied before in a previous work the induced structural and optical effects of substitution of Selenium by Tin in the As 40 -Se 60-x -Sn x (x = 0, 5, 10, 15, 20 at %) chalcogenid alloys system [31]. The results of this research paper have referred to the increasing of refractive index and dielectric constants while the decreasing of the energy gap with the addition of Sn to As-Se-Sn chalcogenide glass system.…”

Tuning the Structural, Optical and Photovoltaic Characteristics of Fabricated N-Tio\(_2\)/P-Cuo and N-Tio\(_2\)/P-Cu\(_2\)o Solar Cells by Changing the Back Contact Electrodes

“…9, the changes in the optical transmission of layers show the shifts of the high energy absorption edges to higher wavelengths for TiO2 (120 nm), Cu2O (200 nm) and CuO (200 nm) layers, respectively. On the other hand, the optical gap energy g E for all layers of the solar cell under study was determined using the Tauc equation-in the strong absorption region (α >10 4 cm -1 ) described below [43][44][45] (see Fig. 10): ( .…”

“…In this equation, C incarnates an optical constant, h portrays the photon energy and  represents the absorption coefficient in terms of the optical measurements (T, R) and the thickness (d) of each layer. This quantity is computed by the listed below formula [45][46][47][48]:…”