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M. A. Majeed Khan,Wasi Khan,Maqusood Ahamed,M.S. Alsalhi,Tansir Ahmed 대한금속·재료학회 2013 ELECTRONIC MATERIALS LETTERS Vol.9 No.1
The present work describes the synthesis of indium oxide nanocubes (NCs) by a modified sol-gel method and its thin film was deposited by spray pyrolysis method. The sample was characterized by x-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), field emission transmission electron microscope (FE-TEM), fourier transform infrared (FTIR) spectroscopy and photoluminescence (PL) techniques in detail. The temperature dependent resistivity of indium oxide thin film was determined in the temperature range of 77 - 350 K which exhibited semiconducting behavior of the sample. The resistivity data were fitted in the Mott's variable range hopping (VRH) model and the density of states was estimated.
Photovoltaic and impedance properties of dye-sensitized solar cell based on nature dye from beetroot
AlMutairi Mona A.,Farooq W.A.,AlSalhi M.S. 한국물리학회 2022 Current Applied Physics Vol.40 No.-
The present study involves fabrication and photovoltaic characterization including impedance properties of dyesensitized solar cells based on natural dye from beetroot. The electrode of the cell was prepared with commercial Fluorine-doped Tin Oxide glass with 100 μm layer of nanostructured TiO2 whereas, the counter electrode consisted of platinum-coated glass. Fresh juice was extracted from beetroot to use as dye. The dye exhibited high absorption in visible range. Photovoltaic measurements of the solar cell gave a short circuit current density (Jsc) of 130 μA/cm2 and an open-circuit voltage (VOC) of 0.38 V under AM 1.5 illumination intensity. The VOC and Jsc showed linear behavior at higher values of illumination intensities. The conductance-voltage, the capacitance-voltage and the series resistance voltage characteristics of the dye solar cell was measured at frequency range from 5 kHz to 5 MHz to study performance of the dye-sensitized solar cells with natural dyes.