Study about TiO2/Nb2O5 Composite Electrode Thin Films for Photovoltaic Applications | Chapter 10 | Fundamental Research and Application of Physical Science Vol. 9

 Nanopowders maybe defined as grated materials with individual pieces in nanometer scale or materials accompanying crystalline in nanometer scale. Nanoparticles (NPs) are containing a large amount of atoms or molecules shackled with each one with a total magnitude varying from 1 nm to around 100 nm. Due to their very limited sizes, NPs possess an remarkably high surface district-to-volume ratio, that changes their physical-synthetic properties distinguished to their macroscale counterparts. Nano sized powders of TiO2 (titanium dioxide) and Nb2O5 (Niobium (V) group of chemical elements) were used to fabricate TiO2/Nb2O5 composites thin films by EPD (electrophoretic dethroning) technique. In an EPD container, pellets of magnesium nitrate hexahydrate and metal oxide powders were pensile in propan-2-ol. 1.2 cm apart, the electrodes were doused in the suspension accompanying a DC potential supplied across them. Through optic examination and reasoning of UV-Vis-NIR spectrophotometer spectra, key EPD process parameters, containing as the applied DC energetic field, deposition event, and solid concentration in delay, were improved. The films accompanying deposition periods of 90 s, powder concentrations of 0.01 g/40 mL, and direct current (DC) voltage of 35 V had the maximum transmittance (55%) of all the samples. XRD micrographs rooted that TiO2 and Nb2O5 particles were bestowed in the composite film. SEM (scanning power microscope) micrographs of the composite electrode thin films showed that absorbent films of high quality accompanying well controlled makeup were deposited by using the EPD method.

Author(s) Details:

John Njagi Nguu,
Department of Physics, University of Nairobi, P.O. Box 30197-00100, Nairobi, Kenya.

Bernard Odhiambo Aduda,
Department of Physics, University of Nairobi, P.O. Box 30197-00100, Nairobi, Kenya.

Francis Wanjala Nyongesa,
Department of Physics, University of Nairobi, P.O. Box 30197-00100, Nairobi, Kenya.

Robinson Juma Musembi,
Department of Physics, University of Nairobi, P.O. Box 30197-00100, Nairobi, Kenya.

Please see the link here: https://stm.bookpi.org/FRAPS-V9/article/view/11767