Nanocarbon structures such as graphene (GR), single-walled carbon nanotubes (SWCNTs) as well as the multi-walled carbon nanotubes (MWCNTs) were deposited on crystalline n-type silicon wafers to fabricate nanoCarbon-Si solar cells. Nanocarbon films deposited on glass and porous silicon (PS) via pulse laser deposition (PLD) with the use of Q-Switching Nd: YAG laser with λ=1064 (nm), Energy (E)=700 (mJ), Repetition rate (f)=6 (HZ) under vacuum condition with 2.5×10-2 (mbar). The surface morphology, structure, and optical Nanocarbon thin films have been examined with the use of X-ray Diffraction (XRD), Atomic force microscope (AFM), FTIR spectrophotometer and UV-visible. In addition, the power conversion efficiency that is related to the prepared solar cells is estimated through J-V characterization. The PCE of all Nanocarbon/PS follows the orders; SWCNTs/PS < MWCNTs/PS< GR/PS.
The preparation of apolymeric membrane by a chemical method was introduced for a Polymer Electrolyte Membrane (PEM) fuel cell. Cobalt oxide (Co3O5) was used in the coexistent of two polymers to speed up the reaction process and to obtain the best results. Different tests were implemented along the research to evaluate the new membrane such as X-ray, Scanning Electron Microscopy (SEM) and Fourier-Transform Infrared Spectroscopy (FTIR). The new membrane shown an increment both in the current (I) and the volume of Hydrogen (H2) at a constant voltage (V).
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