A5064598588- Perovskite Materials and Applications
- Solid State Laser Technologies
- Photorefractive and Nonlinear Optics
- Advanced Fiber Laser Technologies
- Chalcogenide Semiconductor Thin Films
- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Organic Electronics and Photovoltaics
- Magnetic Field Sensors Techniques
- Quantum Dots Synthesis And Properties
- Scientific Research and Discoveries
- Optical properties and cooling technologies in crystalline materials
- Electrohydrodynamics and Fluid Dynamics
- Metal and Thin Film Mechanics
- Magnetic properties of thin films
- ZnO doping and properties
- Orbital Angular Momentum in Optics
- Solid-state spectroscopy and crystallography
- Nanomaterials and Printing Technologies
- Organic and Molecular Conductors Research
- 2D Materials and Applications
- Carbon Nanotubes in Composites
- Thermal Radiation and Cooling Technologies
- Organic Light-Emitting Diodes Research
- Magnetic Properties and Applications
Texas State University
2020-2024
University of Manitoba
2017-2019
Khulna University of Engineering and Technology
2012
A conical refraction (CR) laser based on an a-cut Nd:YVO4 was demonstrated. By using a KGW crystal as CR element, typical with Gaussian intensity output profile transformed into conically refracted output. The delivered 220 mW of power for 500 pump power. separation the gain medium and element reduced complexity pumping scheme, resulted in generation well-behaved beams outstanding quality. presented approach is scalable offers unique possibility studying transformation mode one cavity.
Polyvinyl Alcohol (PVA) is a promising polymer due to its high solubility with water, availability in low molecular weight, having short chain, and cost-effectiveness processing. Printed technology gaining popularity utilize processible solution materials at low/room temperature. This work demonstrates the synthesis of PVA for 2.5% w/w, 4.5% 6.5% 8.5% w/w 10.5% aqueous was formulated. Then properties ink, such as viscosity, contact angle, surface tension, printability by inkjet aerosol jet...
Magnetic anisotropy (MA) is a basic and crucial magnetic property which describes how the properties change with field angle in composite. Torque measurements are normally used to measure sample’s constant can be determined directly using torque magnetometer (TM) or indirectly vibrating sample (VSM). Most TM only operate at room temperature. However, biaxial VSM allows straightforward varying temperatures. curves comprise 2θ background caused by small misalignments of on rod, and/or...
We have demonstrated the highest conical refraction (CR) laser output power to date by placing a CR crystal inside of diode-pumped Nd:YVO cavity. The did not significant influence on as well efficiency. produced maximum 3.68 W with slope efficiency 42 % and opticalto- optical 34 %. Therefore, this approach could be an attractive pathway for further scaling lasers.
Anti-solvent-free one-step deposition of perovskite thin film shows promising potential for application in slot-die or roll-to-roll mass-fabrication processes solar cells. The continuous coverage was confirmed by PV response devices made using the process. In this work, we have developed a process to deposit MAPb<sub>0.75</sub>Sn<sub>0.25</sub>(I<sub>0.5</sub>Br<sub>0.5</sub>)<sub>3</sub> films without anti-solvent adding MAAc ink. By varying Br content precursor, were able tune bandgap....
The availability of printable dielectric materials and their printability is one the major roadblocks to printed flexible electronics. Here, we report performance fully field-effect transistors using polyvinyl alcohol (PVA) as carbon nanotube (CNT) a semiconducting layer. As fewer numbers research are available on PVA films, here investigate ink formulation printing parameters for effects device performances. Aerosol jet Printer was used obtain highly dense CNT network pinhole-free thin...
In recent years, PPDT2FBT is getting researchers' attention due to its applications in solar cells and optoelectronic devices. Although the main of this material are based on optical properties. However, dispersion has not been studied yet over UV visible spectral range. We report properties for wavelength range 300 nm 900 using a variable angle spectroscopic ellipsometry (SE). The refractive index (n) extinction coefficient (k) spin coated thin films were determined at room temperature....
Hole transport layers (HTLs) have a significant role in the performance of organic and organic-inorganic solar cells. In this experiment, we investigated HTLs for Pb-Sn binary perovskite cells (PSCs) to maximize power conversion efficiency (PCE). CuI, PTAA, PEDOT:PSS were chosen as fabricate MAPb0.75Sn0.25(I0.50Br0.50)3 The fabricated using an inverted p-i-n structure where used ITO/HTL/Perovskite/C60/BCP/Al materials stack. For PSCs containing PTAA HTL, obtained PCE 3.81%, 3.11 6.5%,...
A new heterostructure based on Al<sub>x</sub>In<sub>1-x</sub>N/GaN high electron mobility transistor (HEMT) SiC substrate has been proposed for frequency, where it offers the best performance in comparison to other two heterostructures like Al<sub>x</sub>Ga<sub>1-x</sub>N/GaN and In<sub>x</sub>Ga<sub>1-x</sub>N/GaN. We have investigated effect of different higher output characteristics conventional In<sub>x</sub>Ga<sub>1-x</sub>N/GaN with heterostructure, drain current is maximum HEMT...
We have demonstrated an in-band pumped conical refraction (CR) Nd: KGW laser. The CR laser was diode-pumped at 910 nm and produced output power of 1.15 W 1069 nm.
A conical refraction (CR) laser based on a separate gain medium (Nd:YVO<sub>4</sub>) and an intracavity CR element (KGW) was demonstrated. The decoupling of the media enabled to produce well-behaved beam with excellent quality, while reducing complexity pumping scheme. proposed setup has potential for power scaling using efficient diode approach properties generated are independent from medium.
The generation of a conical refraction (CR) laser output with excellent quality directly from the oscillator based on separate gain medium (Nd:YVO4) and an intracavity CR element (KGW) was demonstrated. decoupling media reduced complexity setup has potential for power scaling using diode pumping.