Physisorptive behavior of zinc-aquo-hydroxide

Fabrication and characterization of nano-structured ZnS thin films as the buffer layers in solar cells

“…The previous works reported the presence of isothiocyanate groups (-N]C] S), Zn-O, Zn-OH bonds and adsorbed H 2 O in CBD-ZnS thin lm. [37][38][39] Zn-OH bending and stretching modes are observed at 648 and 1115 cm À1 , respectively, 40,41 Zn-O bonds in ZnO powder is appeared at 430 cm À1 with high intensity. 42 Isothiocyanate groups (-N]C]S) exhibit a strong peak in the 2000-2273 cm À1 domain, 43 whereas nanosized Zn-S particles show a strong peak at 315 cm À1 .…”

“…8, the FT-IR spectrum of one of the ZnS thin lms prepared in this work, besides the Zn-S peak at 318 cm À1 , no other peaks due to impurities are observed except for a very weak peak at 1564 cm À1 and a broad weak peak at 3000-3600 cm À1 that must be related to the stretching and bending modes of trace amounts of adsorbed water on the lm. 40…”

Compositional, structural, and optical study of nanocrystalline ZnS thin films prepared by a new chemical bath deposition route

“…This very weak peak is characteristic of the presence of trace amount of adsorbed water in the thin film. So, the bands appearing in the 3200-3600 cm −1 region can be assigned to the O H stretching modes of water [22].…”

“…2. The absorption spectrum of Zn(OH) 2 shows two peaks at 1115 cm −1 and 648 cm −1 which can be attributed to Zn OH stretching mode and Zn OH bending mode, respectively [22,23]. The peak of Zn O bonds in the FTIR spectrum of ZnO powder appears at 430 cm −1 with high intensity [24].…”

Photoluminescence of ZnS Luminophore Sonofragmentated in Isopropyl Alcohol Solution

“…Indeed, the band with the peak at 3340 cm -1 is associated with vibrations of the OH-group (the shift to 3352 cm -1 for sample 1 and 3363 cm -1 for sample 2) [20], the band at 2970 cm -1 corresponds to asymmetric vibrations in CH3-sp 3 [21,22], the bands in the range of 2875-2950 cm -1 correspond to vibrations of -C-H [23], the band at 2360 cm -1 is associated with adsorption of atmospheric CO2 on the sample surface [24], the bands at 1115 cm -1 and 648 cm -1 correspond to the stretching and bending vibrations in the Zn-OH and ZnS systems, respectively [25], the bands at 950 cm -1 and 1300-1450 cm -1 correspond to C-O stretches on a metal and C-H bends, respectively [26]. Thus, the changes in the peak position and intensity explicitly specify the interaction of the solvent and the studied samples.…”