Abhijit Hazarika
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View article: A-site composition tuning in methylammonium-based metal halide perovskite colloidal nanocrystals
A-site composition tuning in methylammonium-based metal halide perovskite colloidal nanocrystals Open
Methylammonium-based A-site composition tuning in lead halide perovskites via post-synthetic cross-ion exchange to generate phase-stable colloidal nanocrystals of FA x MA 1− x PbI 3 and Cs x FA y MA 1− x − y PbI 3 (TCPbI 3 ).
View article: Photon Ring Dimming as a Signature of Photon-Axion Conversion in Janis-Newman-Winicour Naked Singularity
Photon Ring Dimming as a Signature of Photon-Axion Conversion in Janis-Newman-Winicour Naked Singularity Open
The possible existence of axions in the universe introduces the intriguing possibility of photon-axion conversion in strong magnetic fields, particularly near compact objects like supermassive black holes or even naked singularity. In this…
View article: Orientational Order in Spin-Cast Lead-Iodide Perovskite Nanocrystal Solids
Orientational Order in Spin-Cast Lead-Iodide Perovskite Nanocrystal Solids Open
Combined synthetic control over size and composition renders colloidal lead-halide perovskite nanocrystals a tunable platform for high-efficiency optoelectronic applications. However, the properties and operational stability of devices bas…
View article: Advantageous properties of halide perovskite quantum dots towards energy-efficient sustainable applications
Advantageous properties of halide perovskite quantum dots towards energy-efficient sustainable applications Open
As lead halide perovskite (LHP) semiconductors have shown tremendous promise in many application fields, and particularly made strong impact in the solar photovoltaic area, low dimensional quantum dot forms of these perovskites are showing…
View article: Perovskite nanocrystals and methods of making the same
Perovskite nanocrystals and methods of making the same Open
The present disclosure relates to a perovskite that includes A1-xA′xBX3, where A is a first cation, A′ is a second cation, B is a third cation, X is a first anion, and 0<1−x≤1. In some embodiments of the present disclosure, the perovskite …
View article: Colloidal Quantum Dot Solar Cells: Progressive Deposition Techniques and Future Prospects on Large‐Area Fabrication
Colloidal Quantum Dot Solar Cells: Progressive Deposition Techniques and Future Prospects on Large‐Area Fabrication Open
Colloidally grown nanosized semiconductors yield extremely high‐quality optoelectronic materials. Many examples have pointed to near perfect photoluminescence quantum yields, allowing for technology‐leading materials such as high purity co…
View article: Room temperature single-photon superfluorescence from a single epitaxial cuboid nano-heterostructure
Room temperature single-photon superfluorescence from a single epitaxial cuboid nano-heterostructure Open
Single-photon superradiance can emerge when a collection of identical emitters are spatially separated by distances much less than the wavelength of the light they emit, and is characterized by the formation of a superradiant state that sp…
View article: COMPARISON BETWEEN YOUNGS DOUBLE SLIT AND ⋀ - 𝛅 AND ⋁ - 𝛅 TYPE THREE LEVEL ATOMS PRODUCING QUANTUM INTERFERENCE
COMPARISON BETWEEN YOUNGS DOUBLE SLIT AND ⋀ - 𝛅 AND ⋁ - 𝛅 TYPE THREE LEVEL ATOMS PRODUCING QUANTUM INTERFERENCE Open
We make a comparison between the concepts and physics behind Youngs double slit experiment and ⋀-δ and ⋁-δ type three level atoms producing quantum interference.
View article: Issue Information
Issue Information Open
The central blood volume as measured by thoracic electrical impedance and plasma proANP is not compromised by donation of 900 mL of blood in men
View article: Polaron and Spin Dynamics in Organic–Inorganic Lead Halide Perovskite Nanocrystals
Polaron and Spin Dynamics in Organic–Inorganic Lead Halide Perovskite Nanocrystals Open
Long‐lived carrier population and spin‐based behavior in lead halide perovskite nanocrystals (NCs) are extremely interesting for implementing photovoltaic devices with efficiencies exceeding the Shockley–Queisser limit and quantum informat…
View article: Beyond Strain: Controlling the Surface Chemistry of CsPbI<sub>3</sub> Nanocrystal Films for Improved Stability against Ambient Reactive Oxygen Species
Beyond Strain: Controlling the Surface Chemistry of CsPbI<sub>3</sub> Nanocrystal Films for Improved Stability against Ambient Reactive Oxygen Species Open
Colloidal halide perovskite nanocrystals (NCs) have the possibility of easy scale-up due to their batch synthesis and have demonstrated excellent optoelectronic properties. In particular, perovskite NCs have remarkably high photoluminescen…
View article: Strategies to Achieve High Circularly Polarized Luminescence from Colloidal Organic–Inorganic Hybrid Perovskite Nanocrystals
Strategies to Achieve High Circularly Polarized Luminescence from Colloidal Organic–Inorganic Hybrid Perovskite Nanocrystals Open
Colloidal metal halide perovskite nanocrystals (NCs) with chiral ligands are outstanding candidates as a circularly polarized luminescence (CPL) light source due to many advantages such as high photoluminescence quantum efficiency, large s…
View article: FA<sub><i>x</i></sub>Cs<sub>1–<i>x</i></sub>PbI<sub>3</sub> Nanocrystals: Tuning Crystal Symmetry by A-Site Cation Composition
FA<sub><i>x</i></sub>Cs<sub>1–<i>x</i></sub>PbI<sub>3</sub> Nanocrystals: Tuning Crystal Symmetry by A-Site Cation Composition Open
Nanoscale semiconductors show remarkably tunable properties. For metal halide perovskite (MHP) nanocrystals (NCs), surface energy and lattice strain stabilize desirable MHP compositions and crystallographic phases that are unstable in the …
View article: Bright trion emission from semiconductor nanoplatelets
Bright trion emission from semiconductor nanoplatelets Open
The trion, a quasiparticle comprising one exciton and an additional charge carrier, offers unique opportunities for generating spin-photon interfaces that can be used in developing quantum networks. Trions are also actively sought after fo…
View article: CsI‐Antisolvent Adduct Formation in All‐Inorganic Metal Halide Perovskites
CsI‐Antisolvent Adduct Formation in All‐Inorganic Metal Halide Perovskites Open
The excellent optoelectronic properties demonstrated by hybrid organic/inorganic metal halide perovskites are all predicated on precisely controlling the exact nucleation and crystallization dynamics that occur during film formation. In ge…
View article: Size-Dependent Lattice Structure and Confinement Properties in CsPbI<sub>3</sub> Perovskite Nanocrystals: Negative Surface Energy for Stabilization
Size-Dependent Lattice Structure and Confinement Properties in CsPbI<sub>3</sub> Perovskite Nanocrystals: Negative Surface Energy for Stabilization Open
CsPbI3 nanocrystals with narrow size distributions were readied to study the size-dependent properties. The nanocrystals adopt the perovskite (over the nonperovskite orthorhombic) structure with improved stability over thin-film materials.…
View article: Colloidal Atomic Layer Deposition with Stationary Reactant Phases Enables Precise Synthesis of “Digital” II–VI Nano-heterostructures with Exquisite Control of Confinement and Strain
Colloidal Atomic Layer Deposition with Stationary Reactant Phases Enables Precise Synthesis of “Digital” II–VI Nano-heterostructures with Exquisite Control of Confinement and Strain Open
In contrast to molecular systems, which are defined with atomic precision, nanomaterials generally show some heterogeneity in size, shape, and composition. The sample inhomogeneity translates into a distribution of energy levels, band gaps…
View article: Enhanced Open-Circuit Voltage of Wide-Bandgap Perovskite Photovoltaics by Using Alloyed (FA<sub>1–<i>x</i></sub>Cs<sub><i>x</i></sub>)Pb(I<sub>1–<i>x</i></sub>Br<sub><i>x</i></sub>)<sub>3</sub> Quantum Dots
Enhanced Open-Circuit Voltage of Wide-Bandgap Perovskite Photovoltaics by Using Alloyed (FA<sub>1–<i>x</i></sub>Cs<sub><i>x</i></sub>)Pb(I<sub>1–<i>x</i></sub>Br<sub><i>x</i></sub>)<sub>3</sub> Quantum Dots Open
We report a detailed study on APbX3 (A=Formamidinium (FA+), Cs+; X=I-, Br-) perovskite quantum dots (PQDs) with combined A- and X-site alloying that exhibit, both, a wide bandgap and high open circuit voltage (Voc) for the application of a…
View article: Conductivity Tuning via Doping with Electron Donating and Withdrawing Molecules in Perovskite CsPbI<sub>3</sub> Nanocrystal Films
Conductivity Tuning via Doping with Electron Donating and Withdrawing Molecules in Perovskite CsPbI<sub>3</sub> Nanocrystal Films Open
Doping of semiconductors enables fine control over the excess charge carriers, and thus the overall electronic properties, crucial to many technologies. Controlled doping in lead‐halide perovskite semiconductors has thus far proven to be d…
View article: Direct Synthesis of Six-Monolayer (1.9 nm) Thick Zinc-Blende CdSe Nanoplatelets Emitting at 585 nm
Direct Synthesis of Six-Monolayer (1.9 nm) Thick Zinc-Blende CdSe Nanoplatelets Emitting at 585 nm Open
Here, quasi-two-dimensional semiconductor nanoplatelets (NPLs) have garnered widespread interest because of their uniquely narrow emission spectra and favorable characteristics for optical gain and lasing.(1–5) Strongly quantum confined al…
View article: Perovskite Quantum Dot Photovoltaic Materials beyond the Reach of Thin Films: Full-Range Tuning of A-Site Cation Composition
Perovskite Quantum Dot Photovoltaic Materials beyond the Reach of Thin Films: Full-Range Tuning of A-Site Cation Composition Open
We present a cation-exchange approach for tunable A-site alloys of cesium (Cs+) and formamidinium (FA+) lead triiodide perovskite nanocrystals that enables the formation of compositions spanning the complete range of Cs1- xFA xPbI3, unlike…
View article: Einsteins Relativity, Simultaneity and Young’s Double Slit Experiment
Einsteins Relativity, Simultaneity and Young’s Double Slit Experiment Open
In the present work we have discussed the well known topic of simultaneous passing of photon through both the slit of Young double slit experiment. With the help of the example of Newton's sailor in the special theory of relativity we have…