A5078144744- Quantum Dots Synthesis And Properties
- TiO2 Photocatalysis and Solar Cells
- Copper-based nanomaterials and applications
- Chalcogenide Semiconductor Thin Films
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Perovskite Materials and Applications
- Advanced Photocatalysis Techniques
- ZnO doping and properties
- Organic Light-Emitting Diodes Research
- Gas Sensing Nanomaterials and Sensors
- Luminescence Properties of Advanced Materials
- 2D Materials and Applications
- Molecular Junctions and Nanostructures
- Pigment Synthesis and Properties
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Sensor and Energy Harvesting Materials
- Electronic and Structural Properties of Oxides
- Solid-state spectroscopy and crystallography
- Thin-Film Transistor Technologies
- Advanced battery technologies research
- Nanowire Synthesis and Applications
- Tribology and Wear Analysis
- Thermal Expansion and Ionic Conductivity
- Graphene research and applications
Sunchon National University
2022-2024
Dayananda Sagar University
2024
Dr. Hari Singh Gour University
2024
Council of Scientific and Industrial Research
2018-2023
CSIR National Physical Laboratory of India
2019-2023
Indian Institute of Technology Kanpur
2018-2021
Indian Institute of Technology Delhi
2013-2018
HUN-REN Centre for Energy Research
2014-2016
We report a simple method to mitigate ultra-violet (UV) degradation in TiO2 based perovskite solar cells (PSC) using transparent luminescent down-shifting (DS) YVO4:Eu3+ nano-phosphor layer. The PSC coated with DS phosphor showed an improvement stability under prolonged illumination retaining more than 50% of its initial efficiency, whereas without the layer degraded ∼35% value. also provided ∼8.5% enhancement photocurrent due incident UV photons into additional red photons. thus served...
The thin films of Cu2ZnSnS4 (CZTS) have been successfully deposited on soda lime glass by spin coating technique. CZTS were prepared a solution dissolving copper (II) chloride, zinc tin (IV) chloride and Thiourea in 2-Methoxyethanol. X-ray diffraction studies showed the formation kesterite phase with peaks corresponding to (112), (220) (312) planes. Raman spectrum indicated presence principal peak at 333 cm−1. SEM study that surface film was uniform. electrical measurements p-type...
Stoichiometric thin films of Cu2ZnSnS4 (CZTS) were deposited by the spray technique on a FTO coated glass substrate, with post-annealing in H2S environment to improve film properties. CZTS used as counter electrode (CE) Dye-Sensitized Solar Cells (DSCs) N719 dye and an iodine electrolyte. The DSC 0.25 cm(2) area using CE annealed under AM 1.5G illumination (100 mW cm(-2)) exhibited short circuit current density (JSC) = 18.63 mA cm(-2), open voltage (VOC) 0.65 V fill factor (FF) 0.53,...
Spray-deposited thin films of zinc oxide (ZnO) and aluminum-doped (Al-ZnO) are characterized in detail to get insight into the role a dopant matrix. ZnO Al-ZnO implemented as electron transport layers (ETLs) inverted organic solar cells (IOSCs) with PTB7-Th donor IEICO-4F nonfullerene acceptor, forming bulk heterojunction (BHJ) photoactive layer. Organic (OSCs) based on ETL exhibit short-circuit current density (JSC) 24.46 mA/cm2 an open-circuit voltage (VOC) 0.68 V, yielding power...
An electric field assisted spray deposition method improves the perovskite film morphology, crystallinity, surface coverage and device efficiency with reduced hysteresis.
Perovskite materials are third-generation optoelectronic and require a lot of research work to improve their stability. Recently, lead-free double perovskite have attracted significant attention due environmental friendliness, stability, tunable properties. However, limited number been reported for optoelectronics applications. Therefore an effort is needed explore more perovskites alter the properties further In this manuscript, we report bismuth bismuth/antimony-based [Cs2AgBiBr6,...
Graphene oxide (GO) nano-powder is synthesized by the modified Hummer's method, and further thin films are deposited using water solution of GO through spin-coating. These thermally reduced along with at 50 to 200 °C in a high vacuum. Microstructural, electrical, optical properties expectedly controlled thermal reduction. The electronic investigated X-ray photoelectron spectroscopy near-edge absorption fine structure. reduction confirmed Raman spectroscopy. work function band gap tuned...
Spray process under different applied voltages (0 V to 700 V) is used for the deposition of poly (3, 4-ethylenedioxythiophene): (styrenesulfonate) (PEDOT:PSS) hole transport layer (HTL). The PEDOT:PSS film by spray effect electric field results in smoother morphology, increase conductivity and reduction sheet resistance. improvement surface morphology enhancement PEDOT: PSS films are key J–V characteristics ITO/PEDOT:PSS/P3HT:PCBM/Al solar cell structures. XPS peak height PEDOT at 164.4 eV...
Au nanoparticles are deposited on an ITO substrate using electric field-assisted spray process. Different sizes of can be by applying DC voltage during the deposition. A maximum 3.6% PCE is achieved ITO/Au/ZnO/P3HT:PCBM/Ag device structure.
Dye-sensitized solar cells (DSSCs) are one of the most favorable cell technologies owing to their low cost and ease fabrication. The electron transport layer, consisting a mesoporous titanium oxide (TiO2) photoanode, plays crucial role in DSSCs. In this study, we performed post-lithium (Li) treatment on TiO2 films enhance optoelectronic features power conversion efficiency (PCE) material properties pristine Li-treated were examined by X-ray diffraction (XRD), atomic force microscopy (AFM),...