Dye sensitized solar cells based on hydrothermally grown TiO2 nanostars over nanorods |
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| Affiliation: | 1. Thin Film Materials Laboratory, Department of Physics, Shivaji University, Kolhapur 416 004, Maharashtra, India;2. Department of Materials Science and Engineering and Optoelectronics Convergence Research Center, Chonnam National University, 300 Yongbong-Dong, Buk-Gu, Gwangju 500-757, South Korea;1. Optoelectronic Convergence Research Centre, Department of Materials Science and Engineering, Chonnam National University, Gwangju 500-757, South Korea;2. Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur 416004, M.S, India;1. Department of Materials Science and Engineering, Chonnam National University, Gwangju 500 757, South Korea;2. Thin Film Materials Laboratory, Department of Physics, Shivaji University, Kolhapur, M.S. 416 204, India;3. Department of Electronics and Computer Engineering, Chonnam National University, Gwangju 500 757, South Korea;1. Materials Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416004, India;2. Thin Film Materials Laboratory, Department of Physics, Shivaji University, Kolhapur 416004, India;3. Department of Materials Science, Chonnam National University, 300 Yongbong-Dong, Gwangju 500 757, Republic of Korea;4. School of Applied Chemical Engineering, Chonnam National University, Gwangju 500-757, Republic of Korea;1. Thin Film Materials laboratory, Department of Physics, Shivaji University, Kolhapur, (M.S.) 416004, India;2. Centre for Nanoscience and Nanotechnology, University of Mumbai, Mumbai, India;3. Korea Institute of Material Science, Changwon 642-831, South Korea;4. Dept. of Materials Science, Chonnam National University, Gwangju 500-757, South Korea |
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| Abstract: | A rutile titanium dioxide nanostar over nanorods is synthesized by a simple and cost-effective hydrothermal deposition method onto conducting glass substrates. In order to study the effect of precursor concentrations on the growth of TiO2, the amount of Ti precursor is varied from 0.1 mL to 0.5 mL at the interval of 0.1 mL. These TiO2 thin films are characterized for their morphological, structural, optical and J–V properties using various characterization techniques. SEM images showed the formation of densely packed nanostars over nanorods for 0.3 mL titanium tetraisopropoxide (TTIP). XRD patterns show the formation of polycrystalline TiO2 with tetragonal crystal structure possessing rutile phase. Further, the TiO2 thin films are used for dye sensitized solar cells using N3-dye.The films were photoelectrochemically active and can be viewed as a promising application in DSSC with maximum current density of 1.459 mA/cm2 with enhanced photovoltage of 696 mV for the sample prepared at 0.3 mL TTIP. |
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| Keywords: | Nanostars DSSC Rutile Hydrothermal |
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