Indium Selenide (InSe) thin films were deposited from a mixture of Indium chloride and selenium dioxide in aqueous solution by electrodeposition technique on Indium Tin oxide coated glass substrates. The effects of the parameters during deposition such as current density, deposition potential versus saturated calomel electrode, pH value and concentration of source material were studied. X-ray diffraction studies were carried out on the films to analyze the microstructure using an x-ray diffractometer and were examined by RAMAN spectroscopy. The Raman peak position did not change much with chemical concentrations. Raman scattering due to the (LO) phonon was observed at 211 cm -1. Optical absorption studies were performed with a double beam ultra violet-visible -NIR spectrophotometer in the wavelength 300 -1100 nm. The surface morphology of the layer was examined using a scanning electron micrograph. The composition of the films was studied using an Energy Dispersive Analysis by X-Rays (EDAX).

Indium Antimonide (InSb) thin films were grown onto well cleaned glass substrates at different substrate temperatures (303, 373 and 473 K) by vacuum evaporation. The elemental composition of the deposited InSb film was found to be 52.9 % (In) and 47.1 % (Sb). X-ray diffraction studies confirm the polycrystallinity of the films and the films show preferential orientation along the (111) plane. The particle size (D), dislocation density (δ) and strain (ε) were evaluated. The particle size increases with the increase of substrate temperature, which was found to be in the range from 22.36 to 32.59 nm. In Laser Raman study, the presence of longitudinal mode (LO) confirms that the deposited films were having the crystalline nature. Raman peak located at 191.26 cm -1 shift towards the lower frequencies and narrows with increase in deposition temperature. This indicates that the crystallinity is improved in the films deposited at higher substrate temperatures. Hall measurements indicate that the films were p-type, having carrier concentration ≅ 10 16 cm -3and mobility (4 -7.7) ×10 3 cm 2 /Vs. It is observed that the carrier concentration (N) decreases and the Hall mobility (µ) increases with the increase of substrate temperature.

No abstract

Deuteron spectra from the Al, Co, Nb, Au( He, d) reactions at an incident energy of 130 MeV (43.3 MeV/nucleon) have been measured in an angular range H~, b =7. 5' -21' in 1. 5' steps. Target mass and angular dependences of the centroid energy E"the full width at half maximum I, and the differential cross sections of the breakup peak are presented. The width of the peripheral region where the breakup process is assumed to take place has been estimated to be about 0.7 fm.troid energy E"and the total cross section ub"of the breakup peak.Energy spectra of particles emitted from interaction of loosely bound light projectiles with targets generally exhibit a broad "bump" centered at an energy corresponding approximately to the beam velocity. 'T his bump has been attributed to the projectile breakup process occurring at the periphery of the target nucleus. Theoretical calculations"" based on a flying spectator mechanism have been successful in describing the main features of the experimental data. However, on the experimental side, to our knowledge there has been no effort made so far to extract the "true" breakup peak from the ('He, d) reaction by subtracting the underlying physical continuum, just as in the case of giant resonance'~' and ('He, t)-bumps studies. It is obvious (e.g. , see Fig. 1) that this continuum under the breakup bump generally constitutes a significant part of the cross section.In this Brief Report, we present experimental results on the 'He-projectile breakup process at ari in- Experimental details have been described elsewhere. Examples of the measured deuteron spectra are shown in Fig. 1

Positron annihilation lifetime (PAL) and Doppler broadening (DB) measurements were carried out in four semicrystalline polymer samples, viz., polycarbonate (PC), acrylonitrile-butadiene-styrene (ABS), polytetrafluoroethylene (PTFE), and Nylon 6, 6 (PA). A correlation between the S and Wparameters which reflect the electron momentum, and the orthc-positronium (0-Ps) lifetime reflecting the electron densities in free volume sites is observed. Interestingly, the present results support the known intuition that 0-Ps has a higher momentum component compared to p-Ps and free annihilations but different from that observed by Davies and Pethrick.') Manasagangotri, Mysore 570 006, India.1'