A5101545741- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Thin-Film Transistor Technologies
- Graphene research and applications
- Supercapacitor Materials and Fabrication
- Organic Light-Emitting Diodes Research
- Advanced Sensor and Energy Harvesting Materials
- Analytical Chemistry and Sensors
- ZnO doping and properties
- Quantum Dots Synthesis And Properties
- Advanced Thermoelectric Materials and Devices
- Ophthalmology and Visual Health Research
- Electrochemical Analysis and Applications
- Online and Blended Learning
- Semiconductor Quantum Structures and Devices
- Electrochemical sensors and biosensors
- Thermal properties of materials
- Gold and Silver Nanoparticles Synthesis and Applications
- Nonlinear Optical Materials Studies
- Semiconductor Lasers and Optical Devices
- Smoking Behavior and Cessation
- Mobile Learning in Education
- GaN-based semiconductor devices and materials
Academy of Scientific and Innovative Research
2016-2025
Advanced Device Technology (United States)
2025
National Physical Laboratory
2021-2025
Advanced Materials and Devices (United States)
2024
Council of Scientific and Industrial Research
2011-2024
CSIR National Physical Laboratory of India
2019-2024
University of Louisville Hospital
2023
Shree Krishna Hospital
2020
Institute of Chartered Financial Analysts of India
2020
Indian Agricultural Research Institute
2019
NiO nanostructures were synthesized via a simple wet chemical solution method with varying calcination temperatures. The characterized by XRD, TG/DSC, FT-IR and high-resolution electron microscopy techniques. revealed dependence of particle size, stoichiometry, optical band gap luminescence intensity on materials exhibited efficient electrochemical properties decent capacitance values. Ethylene-glycol-based nanofluids these nanoparticles registered excellent thermal conductivity enhancement...
Herein, we report the first time application of waste plastic derived 3D graphene nanosheets (GNs) for hole transport material (HTM) free perovskite solar cells (PSCs), where GNs have been employed as an electrode dopant in monolithic carbon based mesoscopic PSCs. Waste plastics were upcycled into high-quality by using two-step pyrolysis processes, where, a nickel (99.99%) metal mesh was taken catalytic and degradation template to get acid route synthesis GNs. Raman spectroscopy, HRTEM...
Efficient hole transport and low recombination loss at the interfaces of layer (HTL)/perovskite are vital for a device to attain high power conversion efficiency (PCE). Here, we demonstrate controlled surface passivation poly(3,4-ethylene dioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) by air plasma treatment various time intervals reduce defect states present in HTL/perovskite interfaces. Perovskite grain size improved after on PEDOT:PSS, decreasing boundary reducing trap states. The...
Achieving on-chip, full-UV-band photodetection across UV-A (315-400 nm), UV-B (280-315 and UV-C (100-280 nm) bands remains challenging due to the limitations in traditional materials, which often have narrow detection ranges require high operating voltages. In this study, we introduce a self-driven, on-chip photodetector based on heterostructure of hybrid gold nanoislands (Au NIs) embedded H-glass cesium bismuth iodide (Cs3Bi2I9). The Au NIs act as catalytic nucleation sites, enhancing...
Herein, we report the synthesis of graphene nanosheets (GNs) derived from plastic waste for cost-effective thermoelectric (TE) applications. The GNs was done as per our present process, where a two-step pyrolysis process carried at temperature range 400 °C–850 °C by using Al2O3 catalytic and degradation template, while nickel metal-based beds were used to get high-quality indigenously developed 100 Kg batch pilot-scale plant. Raman, X-ray diffraction (XRD), transmission electron microscopy...
We report a specific and ultrasensitive, label-free chemiresistive biosensor based on mercaptopropionic acid capped gold nanoparticles (GNP) functionalized single walled carbon nanotube (SWNT) hybrid for the detection of cardiac biomarker troponin-I (cTnI). GNPs were attached to SWNTs through molecular linker 1-pyrenemethylamine. The highly cTnI antibody was covalently immobilized capping agent using carbodiimide coupling reaction. interaction its corresponding studied with respect changes...
Abstract Electrochemically synthesized polypyrrole (PPy) films degrade under anodic polarization in aqueous solution. PPy is irreversibly oxidized leading to subsequently an insulating material. This article highlights the degradation behavior of electrochemically using inorganic (perchlorate, ClO 4 − ), organic ( p ‐toluenesulfonate, pTS ) and mixed (inorganic‐organic, + anions systems The were subject overoxidation by means for a certain period time consecutively cyclic voltammetry...
Abstract Flat panel reactors, coated with photocatalytic materials, offer a sustainable approach for the commercial production of hydrogen (H 2 ) zero carbon footprint. Despite this, achieving high solar‐to‐hydrogen (STH) conversion efficiency these reactors is still significant challenge due to low utilization solar light and rapid charge recombination. Herein, hybrid gold nano‐islands (HGNIs) are developed on transparent glass support improve STH efficiency. Plasmonic HGNIs grown an...
The charge carrier formation and transport in the pristine polymers as well polymer–fullerene blend is still a hot topic of discussion for scientific community. In present work, generation some prominent organic molecules has been studied through ultrafast transient absorption spectroscopy. identification exciton polaron lifetimes these led to device performance-related understanding. Energy Gap Law, slope linear fit gradient (γ) vs. bandgap are subjected geometrical rearrangements...
The inclusion of plasmonic nanoparticles into organic solar cell enhances the light harvesting properties that lead to higher power conversion efficiency without altering device configuration. This work defines consequences nanoparticle overloading amount and energy transfer process between gold nanorod polymer (active matrix) in cells. We have studied hole population decay dynamics coupled with nanorods loading which provides better understanding about performance limiting factors. exciton...
Significant efforts have been reported on copper(I) thiocyanate (CuSCN) as an efficient hole-transporting layer (HTL) for perovskite solar cells. Surprisingly, its higher chalcogen analogue copper (I) selenocyanate (CuSeCN) is unexplored yet, even though CuSeCN has shown to different properties compared CuSCN because of electronegativity, polarizability, and size (Se vs S atoms). In this work, we report the synthesis HTL in cells via low-temperature solution-processable deposition from...
Background: World population ageing is enduring, the proportion of older persons has been rising steadily, from 7 per cent in 1950 to 11 2007, with an expected rise reach 22 percent 2050. Globally growing at a rate 2.6 year, considerably faster than as whole which increasing 1.1 annually. The issue health care-seeking (or medical-care) behaviour crucial all society. Objective: To know Socio-demographic distribution elderly rural area, observe Health seeking and available care services...
The distribution of trap states in the active layer perovskite solar cells is a key limiting factor that largely controls charge carrier mobility, rate recombination trapped charges, and, subsequently, power conversion efficiency. In present study, dynamics and influences energetic over device performance nickel oxide based inverted have been investigated detail by analyzing their temperature dependent transient photoresponses. reduction during electrical measurement has induced anomalous...
Herein, acceptor–donor–acceptor π-conjugated small molecules, namely, triad 1 and 2, consisting of dithienopyrrolobenzothiadiazole 1,8-naphthalimide, both with without a thiophene spacer, were synthesized. Their absorption characteristics, redox properties, charge carrier mobilities, their potential for metal-free photocatalytic transformations investigated. Triad 2 showed wide spectra in the range 300–600 nm solutions 350–700 thin films, along narrow electrochemical bandgaps 2.05 1.83 eV,...
Advanced graphene-based materials have been proficiently incorporated into next-generation solar cells and supercapacitors because of their high electrical conductivity, large surface area, excellent charge-transport ability, exceptional optical properties. Herein, we report the synthesis graphene nanosheets (GNs) from waste cardboard via pyrolysis, with ethyl alcohol as growth initiator. Additionally, demonstrated use GNs in energy conversion storage applications. Using GN electrode...
Abstract We present here the evidence for origin of dc electrical conduction and dielectric relaxation in pristine doped poly(3‐hexylthiophene) (P3HT) films. P3HT has been synthesized purified to obtain polymer films are chemically make conducting with different conductivity level. Temperature (77–350 K) dependent (σ ) constant (ε′(ω)) measurements on have conducted evaluate ac parameters. The frequency ( f R static (ε 0 estimated from measurements. A correlation between data indicates that...