Abstract Sub-stoichiometric molybdenum trioxide (MoO3−x) thin films were grown by thermal evaporation techniques on glass, single crystal silicon Si and Fluorine doped Tin Oxide (FTO) glass substrates with different thicknesses. It was found that, Oxygen vacancies play an important role on properties of MoO3−x films. The structural properties of these films were analyzed by means of x-ray diffraction, energy dispersive ... إقراء المزيد

The performance of CdTe solar cells is strongly limited by the thickness of CdS window layer. A higher short-circuit current density might be achieved by decreasing the thickness of CdS layer as a result of reducing the absorption losses that take place in this layer. However, it is difficult to obtain uniform and pin-hole free CdS layers thinner than 50 ... إقراء المزيد

Beside their promising utility as thermoelectric generators, Bi2Te3 and related compounds have several applications in electronic and optoelectronic devices. In this work, Bi2Te2.7Se0.3 nanoparticles (NPs) were successfully prepared via physical vapor deposition technique at different conditions of flow rate and temperature. The x-ray diffraction patterns show that, the NPs crystallize in a rhombohedral crystal structure with preferable growth along the ... إقراء المزيد

ABSTRACT Co-TiO2 nanoparticle thin films were synthesized by sol-gel method. The structural properties of the synthesized sample were studied using FTIR, XRD, and TEM. XRD confirmed the presence of double-phase anatase/rutile for the TiO2 nanoparticles. Effect of annealing temperature and exposure to microwave energy on the optical properties were studied for transparent conductive oxide (TCO) application. The optical energy gap ... إقراء المزيد

ABSTRACT THIN FILMS OF (CDSE)90(IN2O3)10, (CDSE)90(SNO2)10 AND (CDSE)90(ZNO)10 HAVE BEEN GROWN ON GLASS SUBSTRATES BY THE ELECTRON BEAM EVAPORATION TECHNIQUE. IT HAS BEEN FOUND THAT UNDOPED AND SN OR IN DOPED CDSE FILMS HAVE TWO DIRECT TRANSITIONS CORRESPONDING TO THE ENERGY GAPS EG AND EG + DUE TO SPIN–ORBIT SPLITTING OF THE VALENCE BAND. THE ELECTRICAL RESISTIVITY FOR N-DOPED CDSE ... إقراء المزيد

A SOAP BUBBLE APPEARS GREEN (Λ = 540 NM) AT THE VIEW POINT ON ITS FRONT SURFACE NEAREST THE VIEWER. WHAT IS ITS _MINIMUM THICKNESS_? ASSUME _N_ = 1.35._A SOAP BUBBLE APPEARS GREEN (Λ = 540 NM) AT THE VIEW POINT ON ITS FRONT SURFACE NEAREST THE VIEWER. WHAT IS ITS MINIMUM THICKNESS_? ASSUME _N_ = 1.35.A SOAP BUBBLE APPEARS ... إقراء المزيد

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