I'm Dr Amir Khesro
Phd Applied Physics
As a first-generation school-going child growing up on a farm, I always looked up to the handful of educated people in our society on whom our small rural community relied – whether it was for medical emergencies, advice on agricultural practices, or planning the sewage system. My desire, therefore, was to get educated and become one of those people who could help their fellow beings through knowledge.
A Bit About Me
- Industrial Consultancy (Ceramics):
- Academic and Career Consultancy
- Online University Teaching
- Freelance Research Writing
- Peer Review and Editing Services
- Remote Research Project Management
- Ceramics
- Electroceramics
- Piezoelectrics
- Photovoltaics
- Quantum Optics
My Published Papers
Lead-free piezoceramics with the composition 0.7(Bi1-xNdx)FeO3-0.3BaTiO3+0.1 wt% MnO2 (BNxF-BT) were prepared using a conventional solid state route. X-ray diffraction and temperature dependent permittivity measurements indicated a transition from a composition lying at a morphotropic phase boundary (MPB) to a pseudocubic phase as a function of Nd concentration. The highest maximum strain (Smax ∼ 0.2% at 60 kV/cm) and effective piezoelectric coefficient (d33* = 333 pm/V) were obtained at room temperature for the composition BN0.02F-BT.
Lead‐free piezoceramics with the composition (1−x)(K1−yNay)NbO3‐x(Bi1/2Na1/2)ZrO3 (KNyN‐xBNZ) were prepared using a conventional solid‐state route. X‐ray diffraction, Raman spectroscopy, and dielectric measurements as a function of temperature indicated the coexistence of rhombohedral (R) and tetragonal (T) phase, typical of a morphotropic phase boundary (MPB) as the BNZ concentration increased and by adjusting the K/Na ratio.
Lead-free ceramics with high recoverable energy density (Wrec) and energy storage efficiency (η) are attractive for advanced pulsed power capacitors to enable greater miniaturization and integration. In this work, dense bismuth ferrite (BF)-based, lead-free 0.75(Bi1−xNdx)FeO3-0.25BaTiO3 (BNxF-BT) ceramics and multilayers were fabricated.
The relationship between the piezoelectric properties and the structure/microstructure for 0.05Bi(Mg2/3Nb1/3)O3‐(0.95‐x)BaTiO3‐xBiFeO3 (BBFT, x = 0.55, 0.60, 0.63, 0.65, 0.70, and 0.75) ceramics has been investigated. Scanning electron microscopy revealed a homogeneous microstructure for x < 0.75 but there was evidence of a core‐shell cation distribution for x = 0.75 .
Despite their facile synthesis and unprecedently increased power conversion efficiency, there is a dark side of organo-metal halide perovskites solar-cell i.e. their intrinsic environmental instability. A little moisture, harsh ultraviolet-light, and slightly higher thermal stress demolish it quickly into its constituents.
Owing to their high efficiency and extended environmental stability, hybrid 2D/3D-perovskites (HPVKs) are gaining an increasing interest in the field of organometal halide perovskite solar cells (PSCs). In HPVKs, the 3D component acts as an active material, where its 2D-counterpart provides protection against environmental factors
The remarkable optoelectronic properties and considerable performance of the organo lead‐halide perovskites (PVKs) in various optoelectronic applications grasp tremendous scientific attention. However, the existence of the toxic lead in these compounds is threatening human health and remains a major concern in the way of their commercialization
Research on perovskite materials is an emerging trend from the last decade in order to improve the precision, stability, validity, consistency and reproducibility of reported perovskite materials and structures. These efforts are very much successful in advancing the composition, solvent, interface, and structure engineering leading toward the record efficiency value of 25.4%.
In this paper, (1-x)LiWVO6-xK2MoO4 (LWVO-KMO, x = 60, 65, 70, 75, 80, 90 wt%) composite ceramics with >92% relative density were prepared by cold sintering at 160 °C under a uniaxial pressure of 300 MPa for 1 h. X-ray diffraction (XRD), Scanning electron microscopy (SEM) and Raman spectroscopy demonstrate that LWVO and KMO coexist without other impurities. (1-x)LWVO-xKMO composite ceramics exhibit relative
My Work
