A Green Approach to Sustainable Energy using Quantum Dots
Lekshmi Gangadhar1, P. K Praseetha2
1Lekshmi Gangadhar, Department of Nanotechnology, Noorul Islam Centre for Higher Education, Kumaracoil, Kanya Kumari (Tamil Nadu), India.
2P. K Praseetha, Department of Nanotechnology, Noorul Islam Centre for Higher Education, Kumaracoil, Kanya Kumari (Tamil Nadu), India.
Manuscript received on 26 May 2019 | Revised Manuscript received on 13 June 2019 | Manuscript Published on 26 June 2019 | PP: 345-350 | Volume-8 Issue-1S5 June 2019 | Retrieval Number: A00600681S519/2019©BEIESP
Open Access | Editorial and Publishing Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The sunlight is the potential renewable green energy source considering the availability of solar energy in abundance and the need for clean and renewable source of energy. The solar energy is dispersed largely in the electromagnetic spectrum including ultraviolet, visible and infrared regions. Quantum dots are semiconductor nanocrystals having considerable interest in photovoltaic research areas. Cadmium sulfide-sensitized solar cells are synthesized by Chemical bath deposition and titanium nanowires were fabricated by hydrothermal method. The synthesized CdS quantum dots are sensitized to nanoporous TiO2 films to form quantum dots-sensitized solar cell applications. The introduction of TNWs enables the electrolyte to penetrate easily inside the film which increases the interfacial contact between the nanowires, the quantum dots and the electrolyte results in improvement in efficiency of solar cell. Green synthesis of quantum dots is also studied. Field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD) and ultraviolet-visible light (UV-VIS) spectrometer are used for characterization. An efficiency of 2.98% was achieved for the CdS quantum dots-sensitized solar cells via the current technique.
Keywords: Green Synthesis, QDSSC, Quantum Dots, Solar Cells, Titanium Nanowires.
Scope of the Article: Renewable Energy Technology