A5058591739- ZnO doping and properties
- Ga2O3 and related materials
- Gas Sensing Nanomaterials and Sensors
- 2D Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Perovskite Materials and Applications
- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- GaN-based semiconductor devices and materials
- Nanowire Synthesis and Applications
- Conducting polymers and applications
- MXene and MAX Phase Materials
- Nonlinear Optical Materials Research
- Electronic and Structural Properties of Oxides
- Thin-Film Transistor Technologies
- Semiconductor materials and interfaces
- Transition Metal Oxide Nanomaterials
- Semiconductor materials and devices
- Organic Electronics and Photovoltaics
- Advanced biosensing and bioanalysis techniques
- Advancements in Battery Materials
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Free Radicals and Antioxidants
Indian Institute of Technology Ropar
2015-2024
Boston Children's Hospital
2024
Harvard University
2024
Datta Meghe Institute of Medical Sciences
2024
Institute of Engineering
2024
University of Lucknow
2022
Emory University
2021
Indian Institute of Technology Mandi
2021
Rice University
2021
Ambedkar University Delhi
2021
This article presents a strategic review of secondary phases, defects and defect-complexes in kesterite CZTS–Se solar cells responsible for performance gap from CIGS cells.
We demonstrated an ultrahigh-performance and self-powered β-Ga2O3 thin film solar-blind photodetector fabricated on a cost-effective Si substrate using high-temperature seed layer (HSL). The polycrystalline deposited with HSL shows high performance in the region comparison to amorphous Ga2O3 without HSL. zero-bias digitizing sensor prototype produces digitized output bit deep UV (DUV) light that exhibits on/off (I254 nm/Idark) ratio of >103, record-low dark current 1.43 pA, stability...
The article presents a strategic review of secondary phases, defects and defect-complexes in kesterite CZTSSe solar cells responsible for performance gap compared to CIGS cells.
Toxic gases are produced during the burning of fossil fuels. Room temperature (RT) fast detection toxic is still challenging. Recently, MoS2 transition metal dichalcogenides have sparked great attention in research community due to their performance gas sensing applications. However, based sensors suffer from long response and recovery times, especially at RT. Considering this challenge, here, we report photoactivated highly reversible NO2 room by using mixed in-plane edge-enriched p-MoS2...
Fabrication of heterojunction between 2D molybdenum disulfide (MoS2) and gallium nitride (GaN) its photodetection properties have been reported in the present work. Surface potential mapping at MoS2/GaN is done using Kelvin Probe Force Microscopy to measure conduction band offset. Current-voltage measurements show a diode like behavior heterojunction. The origin attributed unique type II alignment photocurrent, photoresponsivity detectivity are found be dependent on power density light....
We report effects of an interface between TiO2–perovskite and grain–grain boundaries perovskite films prepared by single step sequential deposited technique using different annealing times at optimum temperature. Nanoscale kelvin probe force microscopy (KPFM) measurement shows that charge transport in a solar cell critically depends upon the conditions. The KPFM results show increase potential barrier suppresses back-recombination electrons TiO2 holes perovskite. Spatial mapping surface...
The increasing demand of hydrogen (H2) as an alternative clean fuel emboldened the parallel development extremely sensitive room-temperature H2 sensors for safety purposes. Molybdenum disulfide (MoS2) is intriguing material, exhibiting a high chemical sensing ability. However, usage MoS2 in has been limited and usually suffers from low sensitivity selectivity, especially at room temperature. In this work, we report highly selective sensor based on Pt nanoparticle-functionalized vertically...
We report a significant variation in the static contact angle measured on indium oxide (IO) nanoparticle coated Si substrates that have different sizes. These IO nanoparticles, which well defined shape and sizes, were synthesized by chemical vapor deposition horizontal alumina tube furnace. The size of nanoparticles was varied changing source material, substrate temperature, time. A sessile droplet method used to determine macroscopic these covered using two liquids: de-ionized water...
The quest for flexible and completely visible transparent solar-blind photodetector is the great motivation next generation invisible security photo-sensor application. Here, we have developed high performance solar blind using room temperature grown amorphous Ga2O3 thin film unconventional indium-zinc-oxide (a-IZO) conducting electrodes. a-IZO electrodes are deposited an optimized unique RF superimposed DC sputtering which helps to achieve optoelectronic properties with excellent mechanical...
Room temperature growth and crystallization of perovskite nanorod films in ambient air without the use thermal annealing was reported for high performance solar cells.
A novel sandwich polyoxometalate (POM) Na12[WCo3(H2O)2(CoW9O34)2] and poly(vinylimidazolium) cation [PVIM+] in combination with nitrogen-doped carbon nanotubes (NCNTs) was developed for a highly selective ultrasensitive detection of dopamine. Conductively efficient heterogenization Co5POM catalyst by PVIM over NCNTs provides the synergy between PVIM–POM as conductive support which enhances electron transport at electrode/electrolyte interface eliminates interference ascorbic acid (AA)...
Multifunctional nanorod embedded wheat-grain CoFe(3:1)S 2 was synthesized in a simple single-step hydrothermal reaction and demonstrated outstanding performance Zn–air batteries overall water splitting.
Various pressure vessels from Type I to IV are used store hydrogen and CNG at high pressures. The polymeric liner in composite (CPVs) does not share the load, unlike those with metallic liners (Type III); hence, layers entire load. winding angles play a crucial role tailoring pressure-bearing properties of CPVs. This study investigated effect fiber on hoop stress CPVs using finite element (FE) analysis, advantage multi-angle was realized. Stress analysis is vital ensure that vessel can...
A sixfold decrease in photoluminescence signal intensity at 590nm with increase deposition time from 3to12h has been observed single crystalline indium oxide octahedron structures grown by vapor-phase evaporation method. Electron paramagnetic resonance and energy dispersive x-ray analysis confirm that the concentration of oxygen vacancies increases time. These results are contrary to previous reports where were shown be responsible for structures. Our indicate interstitials their associated...
The increased usage of hydrogen as a next generation clean fuel strongly demands the parallel development room temperature and low power sensors for their safety operation. In this work, we report strong evidence preferential adsorption at edge-sites in an edge oriented vertically aligned 3-D network MoS2 flakes temperature. edge-oriented were synthesised by modified CVD process on SiO2/Si substrate confirmed Scanning Electron Microscopy. Raman spectroscopy PL reveal signature few-layer...