Photoabsorption and energy band gap of amorphous Se alloy films

Effect of the Sulfur Concentration on the Optical Band Gap Energy and Urbach Tail of Spray-Deposited ZnS Films

Zinc sulfide (ZnS) films were deposited through a simple and low cost spray pyrolytic technique using mixed aqueous solutions of zinc nitrate and thiourea. The structural and optical properties of these films were investigated as a function of initial (Zn:S) molar ratio in the precursor solution, which varied between (1:1) and (1:3). X-ray diffraction (XRD) analysis revealed that wurtzite...

Band-Gap Tuning Of Electron Beam Evaporated Cds Thin Films

The effect of evaporation rate on structural, morphological and optical properties of electron beam evaporated CdS thin films have been investigated. CdS thin film deposited by electron beam evaporation method in 12nm/min and 60nm/min evaporation rates on glass substrates. X-ray diffraction, scanning electron microscopy, UV-Vis-NIR spectroscopy and Atomic Force Microscopy were used to character...

Amorphous Silicon-Carbon-Fluorine Alloy Films

Formation and structure of V-Zr amorphous alloy thin films

Although the equilibrium phase diagram predicts that alloys in the central part of the V-Zr system should consist of V2Zr Laves phase with partial segregation of one element, it is known that under non-equilibrium conditions these materials can form amorphous structures. Here we examine the structures and stabilities of thin film V-Zr alloys deposited at room temperature by magnetron sputtering...

REDSHIFT IN THE OPTICAL BAND GAP OF AMORPHOUS NANOSTRUCTURE Se80Te20-xSnx FILMS

Ternary glasses of Se80Te20-xSnx (x=3 and 9 at.%) are prepared by melt quench technique. Thin films of Se80Te20-xSnx (x=3 and 9 at.%) of different thicknesses in the range of (25 nm -1450 nm) are prepared by the conventional thermal evaporation technique on glass substrate. X-ray diffraction measurements show that both bulk and thin films of Se80Te20-xSnx have amorphous natures. Optical transmi...