Optical properties of thermally evaporated Bi2Se3 thin films treated with AgNO3 solution

Determination of density of defect states in glassy Se 98 M 2 (M = Ag, Cd and Sn) alloys using a.c. conductivity measurements

“…ChGS exhibit a number of attractive characteristics over the silica glasses like good chemical durability, high transparency in IR region of the spectra [2], high photosensitivity as well as refractive index due to second or third order non linear dispersion [3] and the low glass transition temperature [4,5]. Due to these qualities, Selenium rich ChGS have extensive range of applications in photonic devices, switching, reversible optical recording, wave guide, xerography and infrared biosensors [6][7][8][9][10][11][12]. These glasses are used as gas sensors too for determination of the concentration of different gases like nitric oxide, carbon dioxide, sulphur dioxide etc.…”

Chemical control of continuous light-steering using an array of gradient Au/Bi2Se3/Au strips

“…However, with further increase of Ag addition such that increase the t im , the interstitial site occupation increases attaining saturation, thus the extra Ag atoms occupy the place of Bi sites in the Bi 2 Se 3 lattice. 35. Namely, increasing the t im leads to the decrease of the E g and increase of the refractive index of Bi 2 Se 3 .…”

“…35 This phenomenon satises the denition of the crystallization of the semiconductor chalcogenide: the crystallization of chalcogenide lms is accompanied by a decrease in the E g . However, with further increase of Ag addition such that increase the t im , the interstitial site occupation increases attaining saturation, thus the extra Ag atoms occupy the place of Bi sites in the Bi 2 Se 3 lattice.…”

“…Despite the substantial progress in active OPAs, it is still a formidable challenge to continuously steer the beam over a wide angular range in the near-infrared (N-IR) region. 35 In this context, we envisage the possibility of continuously steering the light by using gradient phase-arraylike metal/dielectric/metal (MDM) multilayer strips, where Bi 2 Se 3 is selected as the dielectric interlayer. 14,18 However, little research has been done on actively steering the direction of the incident light at the shorter wavelength region.…”

Studies on the Zn x Co 1−x S thin films: A facile synthesis process and characteristic properties

“…The X-ray diffractograms were obtained for these composite films in the 10°-80° 2θ range with Cu suggest that there is a formation of ternary alloy of the type Zn-Co-S over a 0 ≤ x ≤ 0.15 composition range [30,31]. Beyond this composition range separate phase formation has been detected.…”