School Of Basic And Applied Sciences

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Subject: search.filters.subject.Solar cell

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Now showing 1 - 4 of 4
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    Natural Basil as Photosensitizer with ZnO Thin Films for Solar Cell Applications
    (Taylor and Francis Ltd., 2020-06-04T00:00:00) Shiyani, Tulshi; Mahapatra, S.K.; Banerjee, Indrani
    The hybrid solar cell has been fabricated using natural dye extracted from basil or ocimum leaves and ZnO thin film. The extracted natural dye was deposited on ZnO thin films and dried at room temperature. The semiconductor layer of ZnO was fabricated on FTO-coated glass substrate using magnetron sputtering with a thickness of 500 nm. A photocathode was prepared from the Au�Pd mixture using sputtering for a top electrode. ZnO has been confirmed using X-ray diffraction and UV�visible absorption spectroscopy measurements. The photovoltaic characteristics of the prepared DSSCs were studied by measuring the I�V characteristics under the illumination of halogen light. Photocurrent and photovoltage both are increased in the cell. The value of short-circuit current (I sc), open-circuit voltage (V oc), and photon energy conversion efficiency (?) were calculated for a dye-sensitized solar cell (DSSC). DSSCs provide the promising light to electrical energy conversion efficiency due to their low-cost fabrication, environmentally friendly elements, and low maintenance. DSSC offers transparent solar cell modules with the capabilities of the use of hybrid composition such as organic and inorganic materials. The basil/ZnO-based hybrid devices can also be useful for photoelectrochemical cell and water splitting applications. � 2022 IETE.
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    Natural Basil as Photosensitizer with ZnO Thin Films for Solar Cell Applications
    (Taylor and Francis Ltd, 2020) Shiyani, T; Mahapatra, S.K; Banerjee, I.
    The hybrid solar cell has been fabricated using natural dye extracted from basil or ocimum leaves and ZnO thin film. The extracted natural dye was deposited on ZnO thin films and dried at room temperature. The semiconductor layer of ZnO was fabricated on FTO-coated glass substrate using magnetron sputtering with a thickness of 500 nm. A photocathode was prepared from the Au�Pd mixture using sputtering for a top electrode. ZnO has been confirmed using X-ray diffraction and UV�visible absorption spectroscopy measurements. The photovoltaic characteristics of the prepared DSSCs were studied by measuring the I�V characteristics under the illumination of halogen light. Photocurrent and photovoltage both are increased in the cell. The value of short-circuit current (Isc), open-circuit voltage (Voc), and photon energy conversion efficiency (?) were calculated for a dye-sensitized solar cell (DSSC). DSSCs provide the promising light to electrical energy conversion efficiency due to their low-cost fabrication, environmentally friendly elements, and low maintenance. DSSC offers transparent solar cell modules with the capabilities of the use of hybrid composition such as organic and inorganic materials. The basil/ZnO-based hybrid devices can also be useful for photoelectrochemical cell and water splitting applications. � 2020, � 2020 IETE.
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    2D layered transition metal dichalcogenides (MoS2): Synthesis, applications and theoretical aspects
    (Elsevier, 2018) Singh, Arun Kumar; Kumar, P.; Late, D.J.; Kumar, Ashok; Patel, S.; Singh, Jai
    Recently, graphene and other two-dimensional (2D) transition metal dichalcogenides (TMDCs) have been widely explored due to their unique optical, mechanical, electrical and sensing properties for versatile electronic and optoelectronic applications. The atomically thin layers of TMDC materials have shown potential to replace state-of-the-art silicon-based technology. Graphene has already revealed an excess of new physics and multifaceted applications in several areas. Similarly, mono-layers of TMDCs such as molybdenum disulfide (MoS2) have also shown excellent electrical and optical properties possessing a direct band-gap of ∼1.8 eV combined with high mechanical flexibility. In contrast to semi-metallic graphene, the semiconducting behavior of MoS2 allows it to overcome the deficiencies of zero-band-gap graphene. This review summarizes the synthesis of 2D MoS2 by several techniques, i.e., mechanical and chemical exfoliation, RF-sputtering, atomic layer deposition (ALD) and chemical vapor deposition (CVD), etc. Furthermore, extensive studies based on potential applications of MoS2 such as the sensor, solar cells, field emission and as an efficient catalyst for hydrogen generation has been included. Theoretical aspects combined with the experimental observations to provide more insights on the dielectric, optical and topological behavior of MoS2 was highlighted.
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    2D layered transition metal dichalcogenides (MoS2): Synthesis, applications and theoretical aspects
    (Elsevier Ltd, 2018) Singh, Arun Kumar; Kumar, P.; Late, D.J.; Kumar, Ashok; Patel, S.; Singh, Jai
    Recently, graphene and other two-dimensional (2D) transition metal dichalcogenides (TMDCs) have been widely explored due to their unique optical, mechanical, electrical and sensing properties for versatile electronic and optoelectronic applications. The atomically thin layers of TMDC materials have shown potential to replace state-of-the-art silicon-based technology. Graphene has already revealed an excess of new physics and multifaceted applications in several areas. Similarly, mono-layers of TMDCs such as molybdenum disulfide (MoS2) have also shown excellent electrical and optical properties possessing a direct band-gap of ?1.8 eV combined with high mechanical flexibility. In contrast to semi-metallic graphene, the semiconducting behavior of MoS2 allows it to overcome the deficiencies of zero-band-gap graphene. This review summarizes the synthesis of 2D MoS2 by several techniques, i.e., mechanical and chemical exfoliation, RF-sputtering, atomic layer deposition (ALD) and chemical vapor deposition (CVD), etc. Furthermore, extensive studies based on potential applications of MoS2 such as the sensor, solar cells, field emission and as an efficient catalyst for hydrogen generation has been included. Theoretical aspects combined with the experimental observations to provide more insights on the dielectric, optical and topological behavior of MoS2 was highlighted.