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Electrovoltaic (EV) effect provides a way of generating voltage across an unbiased junction under dark. Electrovoltaic (EV) cell in its simplest form is a device based on n + –p–n + (or p + –n–p + ) like structure in which if one p–n junction is subjected to an external forward bias,...
The spectral emissivity of Yb 3+ in a series of compounds has been investigated to study the effects of crystal structure type, chemical environment, ytterbium concentration, impurity concentration and temperature on the spectral radiant intensity of the selective emitter peak and emitted power...
The method described in a prior journal publication (1) is applied to the determination of module series resistance and diode quality factors for several crystalline silicon (c-Si) technology photovoltaic (PV) modules. This method makes use of the functional dependence of the slope of the...
Layer-type microcrystalline powders of WS 2 , MoS 2 , WSe 2 and MoSe 2 , which were tested for photoeffects with contact free microwave conductivity measurements, were incorporated into a nanostructured TiO 2 matrix in an attempt to obtain macroscopic photocurrents. Even though only 10% of the...
CuInS 2 thin films were deposited by single source vacuum thermal evaporation method on substrates submitted to longitudinal thermal gradient. Some of these films were annealed in sulfur atmosphere and converted into CuInS 2 homogenous layers. Both of the as-deposited and sulfurated films were...
Luminescent porous silicon (PS) was prepared for the first time using a spraying set-up, which can diffuse in a homogeneous manner HF solutions, on textured or untextured (1 0 0) oriented monocrystalline silicon substrate. This new method allows us to apply PS onto the front-side surface of...
The CuInTe 2 thin films is one of the most attractive semiconductors for solar cells applications, since its direct band gap energy ( E g≈1 eV) is suitable as an absorber in photovoltaic conversion. In this letter the CuInTe 2 thin films are prepared by flash evaporation technique. X-ray...
Highly transparent, uniform and corrosion resistant Al 2 O 3 films were prepared on stainless-steel and quartz substrates by the sol–gel process from stable coating solutions using aluminum-sec-butoxide, Al(OBu s ) 3 as precursor, acetylacetone, AcAcH as chelating agent and nitric acid, HNO 3 ,...
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