Laxmi Tomar | Maharaja Sayajirao University of Baroda (original) (raw)
Papers by Laxmi Tomar
Invertis Journal of Renewable Energy, 2015
Al and Mg doped TiO2-ZrO2 semiconducting nanopowder samples were prepared for dye sensitized sola... more Al and Mg doped TiO2-ZrO2 semiconducting nanopowder samples were prepared for dye sensitized solar cell application. The structural properties were examined by X-ray diffraction. The results revealed that TiO2 exists in two different phases Anatase and Rutile whereas ZrO2 exists in Monoclinic and Tetragonal phases. The average crystallite size for Al and Mg doped samples was found to be 8.16 nm and 6.90 nm respectively. The optical properties were evaluated by UV- Visible spectroscopy. Both the Al and Mg doped TiO2-ZrO2 nanocomposites show optical absorption in UV region. The optical bandgap was found to be 2.96 eV and 3.34 eV for Al and Mg doped TiO2-ZrO2 nanocomposites respectively. Dye-sensitized solar cell was fabricated using Al and Mg doped TiO2-ZrO2 nanocomposite as conducting material and pomegranate juice as sensitizer. The I - V characteristics were recorded to measure photo response of DSSC. Photovoltaic parameters like open circuit voltage, power conversion efficiency, a...
In the present work, PbS Nanocrystals with rod shap ed structure have been successfully prepared ... more In the present work, PbS Nanocrystals with rod shap ed structure have been successfully prepared by chemical bath deposition method. The structure was determined by X-ray diffraction studies. The XRD data revealed the formation of cubic phase of PbS with t he preferential orientation (2 0 0). The average cr ystallite size was found to be 7.82 nm. SEM images confirm the formation of nanorods of PbS. The optical propert ies were studied by recording absorption spectra in the wavelength range of 200-900 nm. The optical bandgap and refractive index was found to be 1.47eV and 2.97, r espectively. The electrical resistance was measured using four probe method and it was found to be 0.67M Ω. Keywords -Nanorods; Electrical properties; Optical propertie s.
Recent Patents on Nanotechnology
Advanced Materials Letters, 2013
Invertis Journal of Renewable Energy, 2015
Al and Mg doped TiO2-ZrO2 semiconducting nanopowder samples were prepared for dye sensitized sola... more Al and Mg doped TiO2-ZrO2 semiconducting nanopowder samples were prepared for dye sensitized solar cell application. The structural properties were examined by X-ray diffraction. The results revealed that TiO2 exists in two different phases Anatase and Rutile whereas ZrO2 exists in Monoclinic and Tetragonal phases. The average crystallite size for Al and Mg doped samples was found to be 8.16 nm and 6.90 nm respectively. The optical properties were evaluated by UV- Visible spectroscopy. Both the Al and Mg doped TiO2-ZrO2 nanocomposites show optical absorption in UV region. The optical bandgap was found to be 2.96 eV and 3.34 eV for Al and Mg doped TiO2-ZrO2 nanocomposites respectively. Dye-sensitized solar cell was fabricated using Al and Mg doped TiO2-ZrO2 nanocomposite as conducting material and pomegranate juice as sensitizer. The I - V characteristics were recorded to measure photo response of DSSC. Photovoltaic parameters like open circuit voltage, power conversion efficiency, a...
In the present work, PbS Nanocrystals with rod shap ed structure have been successfully prepared ... more In the present work, PbS Nanocrystals with rod shap ed structure have been successfully prepared by chemical bath deposition method. The structure was determined by X-ray diffraction studies. The XRD data revealed the formation of cubic phase of PbS with t he preferential orientation (2 0 0). The average cr ystallite size was found to be 7.82 nm. SEM images confirm the formation of nanorods of PbS. The optical propert ies were studied by recording absorption spectra in the wavelength range of 200-900 nm. The optical bandgap and refractive index was found to be 1.47eV and 2.97, r espectively. The electrical resistance was measured using four probe method and it was found to be 0.67M Ω. Keywords -Nanorods; Electrical properties; Optical propertie s.
Recent Patents on Nanotechnology
Advanced Materials Letters, 2013