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The development of a polycrystalline thin-film solar cell utilizing a backwall designed heterojunction structure based upon p-type Cu2−xSe and n-type CdS semiconductor materials is described. The electrical, optical, and structural properties of the deposited thin-film materials are described. A device efficiency of 5.38% under simulated AM1 illumination is reported.

Erection is a complex and dynamic process. A new classification of hemodynamic patterns is presented that aids in assessing and interpreting more thoroughly blood flow parameters to stratify more precisely the hemodynamic patterns of erectile dysfunction.

A polycrystalline thin-film Cds/CuInSe2 heterojunction solar cell with an efficiency of 5.7% has been prepared using a simultaneous elemental evaporation technique to deposit the CuInSe2 film. The cell–s short(-circuit current of 31 mA/cm2 under 100 mW/cm2 is the highest ever reported for a 1-cm2 cell. Heat treatments have been found to improve cell efficiency and to also change the cell I-V and C-V characteristics.