Browsing HVL Open by Author "Velauthapillai, Dhayalan"
Now showing items 1-20 of 58
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A Quarterthiophene-Based Dye as an Efficient Interface Modifier for Hybrid Titanium Dioxide/Poly(3-hexylthiophene)(P3HT) Solar Cells
Pirashanthan, Arumugam; Murugathas, Thanihaichelvan; Robertson, Neil; Ravirajan, Punniyamoorthy; Velauthapillai, Dhayalan (Journal article; Peer reviewed, 2019)This work focused on studying the influence of dyes, including a thiophene derivative dye with a cyanoacrylic acid group ((E)-2-cyano-3-(3′,3′′,3′′′-trihexyl-[2,2′:5′,2′′:5′′,2′′′- quaterthiophene]-5-yl) acrylicacid)(4T), ... -
A Review on the Classifications of Organic/Inorganic/Carbonaceous Hole Transporting Materials for Perovskite Solar Cell Application
Selvakumar, P; Muthukumarasamy, N.; Agilan, S; Asokan, Vijayashankar; Akila, Y; Venkatraman, M R; Palanisamy, Subramaniam E,; Senthilarasu, S; Velauthapillai, Dhayalan (Journal article; Peer reviewed, 2018)The rapid increase in the efficiency of perovskite solar cells (PSCs) in last few decades have made them very attractive to the photovoltaic (PV) community. However, the serious challenge is related to the stability under ... -
Air processed Cs<inf>2</inf>AgBiBr<inf>6</inf> lead-free double perovskite high-mobility thin-film field-effect transistors
Abiram, Gnanasampanthan; Gourji, Fatemeh Heidari; Pitchaiya, Selvakumar; Ravirajan, Punniamoorthy; Murugathas, Thanihaichelvan; Velauthapillai, Dhayalan (Peer reviewed; Journal article, 2022)This study focuses on the fabrication and characterization of Cs2AgBiBr6 double perovskite thin film for field-effect transistor (FET) applications. The Cs2AgBiBr6 thin films were fabricated using a solution process technique ... -
Asymmetric polyhedron structured NiSe2@MoSe2 device for use as a supercapacitor
Vidhya, M. Sangeetha; Yuvakkumar, R.; Ravi, G.; Saravanakumar, B.; Velauthapillai, Dhayalan (Peer reviewed; Journal article, 2021)The polyhedron-structured NiSe2@MoSe2 (NMS) were magnificently produced through hydrothermal method, which makes the active electrode very effective in accessing the redox active sites in the charge/discharge process in ... -
Basella alba rubra spinach pigment sensitized TiO2 thin film based solar cells
Gokilamani, N; Muthukumarasamy, N.; Thambidurai, M.; Ranjitha, A; Velauthapillai, Dhayalan (Peer reviewed; Journal article, 2014)Nanocrystalline TiO2 thin films have been prepared by sol–gel dip coating method. The X-ray diffraction results showed that TiO2 thin films annealed at 400, 450 and 500 °C are of anatase phase and the peak corresponding ... -
Berberine isolation from Coscinium fenestratum: optical, electrochemical, and computational studies
Rajapakse, R. M. Gamini; Horrocks, Benjamin R.; Malikaramage, A.U.; Gunarathna, H.M.N.P.; Egodawele, M.G.S.A.M.E.W.D.D.K.; Jayasinghe, J. M. Susanthi; Ranatunga, Udayana; Herath, W.H.M.R.N.K.; Sandakelum, Lahiru; Wylie, Shane; Abewardana, P.G.P.R.; Seneviratne, V.N.; Perera, L.L.K.; Velauthapillai, Dhayalan (Peer reviewed; Journal article, 2023)Berberine was extracted from Coscinium fenestratum (tree turmeric) and purified by column chromatography. The UV-Vis absorption spectroscopy of berberine was studied in acetonitrile and aqueous media. TD-DFT calculations ... -
Bimetallic AC/Ag2CrO4/SnS heterostructure photoanode for energy conversion and storage: A self-powered Photocapacitor
Kajana, Thirunavukarasu; Pirashanthan, Arumugam; Yuvapragasam, Akila; Velauthapillai, Dhayalan; Ravirajan, Punniamoorthy; Senthilnanthanan, Meena (Peer reviewed; Journal article, 2021)The worldwide increase in generation of solar based electricity prompts the essentiality of research efforts on the development of energy storage systems. In this regard, self-powered photocapacitors are of keen interest ... -
CO<inf>2</inf> adsorption performance of template free zeolite A and X synthesized from rice husk ash as silicon source
Madhu, Jayaprakash; Santhanam, Agilan; Natarajan, Muthukumarasamy; Velauthapillai, Dhayalan (Peer reviewed; Journal article, 2022)In this work, zeolite NaA (RA) and NaX (RX) have been successfully synthesized using rice husk ash and it is a low cost synthesis process and it does not produce environmental hazards. Sodium silicate (SS) is extracted ... -
Computational Modeling of Novel Bulk Materials for the Intermediate-Band Solar Cells
Rasukkannu, Murugesan; Velauthapillai, Dhayalan; Vajeeston, Ponniah (Journal article, 2017)Research communities have been studying materials with intermediate bands (IBs) in the middle of the band gap to produce efficient solar cells. Cells based on these materials could reach theoretical efficiencies up to ... -
CoNiSe2 Nanostructures for Clean Energy Production
Jansi rani, Balasubramaniam; Ravi, Ganesh; Yuvakkumar, R; Saravanakumar, B; Thambidurai, M; Dang, Quong; Velauthapillai, Dhayalan (Peer reviewed; Journal article, 2020)Comparative investigation of the electrochemical oxygen evolution reaction (OER) activity for clean energy production was performed by fabricating three different electrodes, namely, NiSe2, CoSe2, and CoNiSe2, synthesized ... -
CoS2/TiO2 Nanocomposites for Hydrogen Production under UV Irradiation
Shanmugaratnam, Sivagowri; Velauthapillai, Dhayalan; Ravirajan, Punniamoorthy; Christy, Alfred Antony; Shivatharsiny, Yohi (Journal article; Peer reviewed, 2019)Transition metal chalcogenides have intensively focused on photocatalytic hydrogen production for a decade due to their stronger edge and the quantum confinement effect. This work mainly focuses on synthesis and hydrogen ... -
Cost Effective Solvothermal Method to Synthesize Zn-Doped TiO2 Nanomaterials for Photovoltaic and Photocatalytic Degradation Applications
Rajaramanan, Tharmakularasa; Shanmugaratnam, Sivagowri; Gurunanthanan, Vijayakumar; Shivatharsiny, Yohi; Velauthapillai, Dhayalan; Ravirajan, Punniamoorthy; Senthilnanthanan, Meena (Peer reviewed; Journal article, 2021)Titanium dioxide (TiO2) is a commonly used wide bandgap semiconductor material for energy and environmental applications. Although it is a promising candidate for photovoltaic and photocatalytic applications, its overall ... -
Design and characterization of a novel finned tubular thermoelectric generator for waste heat recovery
Zoui, Mohamed Amine; Bentouba, Said; Velauthapillai, Dhayalan; Zoui, Nadjet; Bourouis, Mahmoud (Peer reviewed; Journal article, 2022)Most commercial thermoelectric modules have a flat design that complicates their integration into gas/liquid thermoelectric conversion systems. The aim of the present study is to develop a robust, compact, and cost-effective ... -
Direct Growth of Binder-Free CNTs on a Nickel Foam Substrate for Highly Efficient Symmetric Supercapacitors
Isacfranklin, Melkiyur; Rathinam, Yuvakkumar; Ganesan, Ravi; Velauthapillai, Dhayalan (Peer reviewed; Journal article, 2023)In the modern civilized world, energy scarcity and associated environmental pollution are the center of focus in the search for reliable energy storage and harvesting devices. The need to develop cheaper and more competent ... -
Eco-friendly Egyptian blue (CaCuSi<inf>4</inf>O<inf>10</inf>) dye for luminescent solar concentrator applications
Rajaramanan, Tharmakularasa; Keykhaei, Mansoureh; Gourji, Fatemeh Heidari; Ravirajan, Punniamoorthy; Senthilnanthanan, Meena; Frette, Øyvind; Velauthapillai, Dhayalan (Peer reviewed; Journal article, 2023)This study focuses on synthesizing the heavy metal-free ancient Egyptian blue (EB; CaCuSi4O10) dye using a facile ceramic method for luminescent solar concentrator (LSC) application. XRD, SEM and EDX results confirmed that ... -
Effect of doped TiO2 film as electron transport layer for inverted organic solar cell
Ranjitha, A; Thambidurai, M; Shini, Foo; Muthukumarasamy, N; Velauthapillai, Dhayalan (Journal article, 2019)Nanocrystalline TiO2 and Sn-doped TiO2 thin films were prepared by sol–gel spin coating method. The crystallinity and anatase phase of TiO2 and Sn-doped TiO2 were confirmed from X-ray diffraction analysis. The EDAX analysis ... -
Enhanced performance of nanoporous titanium dioxide solar cells using cadmium sulfide and poly(3-hexylthiophene) co-sensitizers
Thanihaichelvan, Murugathas; Sri Kodikara, Minidu Manoranjana Punya; Ravirajan, Punniyamoorthy; Velauthapillai, Dhayalan (Journal article; Peer reviewed, 2017)This work reports the effect of co-sensitization of nanoporous titanium dioxide using Cadmium Sulfide (CdS) and poly(3-hexylthiophene) (P3HT) on the performance of hybrid solar cells. CdS nanolayer with different thicknesses ... -
Enhanced Photovoltaic Properties of Dye-Sensitized Solar Cells through Ammonium Hydroxide-Modified (Nitrogen-Doped) Titania Photoanodes
Rajaramanan, Tharmakularasa; Fatemeh, Heidari Gourji; Velauthapillai, Dhayalan; Ravirajan, Punniamoorthy; Meena, S (Peer reviewed; Journal article, 2023)Doping is a unique strategy to modulate the optical and electronic properties of semiconducting materials. This study reports a facile approach to fabricate nitrogen-doped TiO2 (N-doped TiO2) photoanode for DSSC application. ... -
Exploration of Bifunctionality in Mn, Co Codoped CuO Nanoflakes for Overall Water Splitting
Rani, B. Jansi; Mohana, P.; Swathi, S.; Yuvakkumar, R.; Ravi, G.; Thambidurai, M.; Nguyen, Hung D.; Velauthapillai, Dhayalan (Peer reviewed; Journal article, 2023)Herein, bimetal (Mn, Co) codoping on a CuO host is aimed at enhancing oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) activity. Codoping of Mn and Co on CuO to enhance bifunctional action in electrochemical ... -
A facile impregnation synthesis of Ni-doped TiO2 nanomaterials for dye-sensitized solar cells
Rajaramanan, Tharmakularasa; Velauthapillai, Dhayalan; Ravirajan, Punniamoorthy; Senthilnanthanan, Meena (Peer reviewed; Journal article, 2023)This study reports a facile impregnation method for synthesizing Ni-doped TiO2 nanomaterials using P25-TiO2 as a starting material. The as prepared nanomaterials were subjected to structural and optical characterizations ...