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Papers by Dr. ALOKE VERMA

Research paper thumbnail of Physics Education: The Role and Benefits of Cutting-Edge Technology

Pahale Pahal Prakashan, 2023

The integration of modern technology into the teaching-learning process has revolutionized educat... more The integration of modern technology into the teaching-learning process has revolutionized education across various disciplines, including physics. This article explores the application and utility of modern technology in enhancing the teaching and learning of physics. We discuss how technologies such as simulations, virtual laboratories, and interactive multimedia, and online platforms have transformed the traditional pedagogical approaches. By leveraging these advancements, educators can create more engaging, interactive, and personalized learning experiences for students, fostering deeper understanding and critical thinking skills. Moreover, the article highlights the potential challenges and considerations associated with the implementation of technology in physics education. The insights presented here emphasize the importance of a balanced and strategic incorporation of technology to maximize its benefits in the physics classroom.

Research paper thumbnail of CsPbX3 PEROVSKITES, A TWO-TIER MATERIAL FOR HIGH-PERFORMANCE, STABLE PHOTOVOLTAICS

Chinese Physical Society, 2023

The inorganic CsPbX3 perovskite has received a lot of attention due to its high carrier transport... more The inorganic CsPbX3 perovskite has received a lot of attention due to its high carrier transport efficiency and high thermal stability. However, solution-processed CsPbX3 perovskite solar cells' PCE is still significantly lower than that of their hybrid counterparts. Their devices' functionality is hampered by two main factors: insufficient film thickness and unwanted phase transition. Here, we demonstrate that the well-known solubility limitation for Cs precursors may be circumvented for the production of high-quality CsPbX3 perovskite films of considerable film thickness by using a novel precursor pair consisting of cesium acetate (CsAc) and hydrogen lead trihalide (HPbX3) (500 nm). To further encourage reduced-dimensional perovskite production, we added a small quantity of phenylethylammonium iodide (PEAI) to the solution. The resulting quasi-2D perovskites greatly lowered the trap density in the film by inhibiting unwanted phase transition. Using this method, we reported a 12.4 percent PCE for reduced-dimensional a-CsPbI3 perovskite photovoltaics, which is the best to date and has significantly longer performance lifetime than previous methods.

Research paper thumbnail of Futuristic Energy Source Of CTB (Cs 2 TiBr 6 ) Thin Films Based Lead-Free Perovskite Solar Cells: Synthesis And Characterization

Solid State Technology , 2020

This work is based on the Lead-free Perovskites Solar Cells (LFPSCs) for the application of photo... more This work is based on the Lead-free Perovskites Solar Cells (LFPSCs) for the application of photovoltaic (PV). Here, the selection of Lead-free Perovskites Halide, it gives the magnificent properties of optoelectronics, synthesis, most favorable bandgap, and ecofriendly nature. Therefore, we select the CTB for this work and promise to the synthesis of Cesium (Cs) based on highly efficient thin-film solar cells (TFSCs). It having a stable energy level and most promising bandgap of ⁓ 1.8 eV, large carrier-diffusion on the balanced term. First reported CTB thin-film based LFPSCs efficiency up to 3.3%. This work is dedicated to green environmental-based solar cell manufacturing for low cast highly efficient.

Research paper thumbnail of Characterization of CH3CH2NH3SnI3/TiO2 Heterojunction

Advances in Wireless Technologies and Telecommunication

In this chapter, CH3CH2NH3SnI3/TiO2 heterojunction lead-free perovskite solar cell (HLFPSCs) is p... more In this chapter, CH3CH2NH3SnI3/TiO2 heterojunction lead-free perovskite solar cell (HLFPSCs) is produced by the deposition of perovskite nanoparticles from a solution of CH3CH2NH3I and SnI3 in γ-hydroxyl butyric acid lactone on a 400 nm nanolayers of TiO2 showing (001) planes. The CH3CH2NH3SnI3 /TiO2 HLFSCs shows remarkable PV performance, with Jsc= 17.05 mA/cm2, Voc = 0.71 V, and FF = 0.61; resultant PCE of 6.5% in standard AM 1.5 G one-sun light intensity and PCE of 7.5% in lower light intensity was reported in this work. The beginning of such a simple solution treated HLFPSCs paves the way to appreciate low-cost, high-efficiency LFPSCs.

Research paper thumbnail of Characterization CH3NH3PbI3/TiO2 nano-based new generation heterojunction organometallic perovskite solar cell using thin-film technology

NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020

CH3NH3PbI3/TiO2 nano-based heterojunction organometallic perovskite solar cells (HOPSCs) have fas... more CH3NH3PbI3/TiO2 nano-based heterojunction organometallic perovskite solar cells (HOPSCs) have fascinated a great deal of responsiveness due to their collective advantages of high efficiency and have shown a lightning future as a photovoltaic semiconductor in next era solar cells having noble and auspicious photochemical nature. In the last decay, we have observed great progress in the perovskite solar cells (PSCs) efficiency recorded and presently recorded maximum efficiency of PSCs has reached 28.0% (Oxford PV) and it was reported at a very microdevice range of fewer than 1 mm 2. That way, the power conversion area increasing to a micro level, the efficiency record has unexpected changes. The characteristic causes are mainly credited to poor quality management mechanism of huge-surface HOPSCs using thin-film technology and lacking optimization of solar module design. In the current stage we all facing tow major obstacles like commercialization and new technology of PSCs research and development. That work, we observed magnificence development of huge-surface HOPSCs using thin-film technology solar modules and characterization based on standard solar cell parameters.

Research paper thumbnail of Re: Homology in Phylogenetic Analysis: Alignment of Transfer RNA Genes and the Phylogenetic Position of Snakes

Molecular Phylogenetics and Evolution, 1997

UK PubMed Central is a service of the UKPMC Funders Group working in partnership with the British... more UK PubMed Central is a service of the UKPMC Funders Group working in partnership with the British Library, University of Manchester and the European Bioinformatics Institute in cooperation with the National Center for Biotechnology Information at the US National ...

Research paper thumbnail of Study of Temperature Dependent Dialectical Properties of One System Ceramics using BNT-BZ

In this paper, Study of temperature dependent dialectical properties of one system ceramics like ... more In this paper, Study of temperature dependent dialectical properties of one system ceramics like BNT-BZ. Lead-free BNT-BZ ceramics were successfully prepared using the conventional mixed-oxide method. The samples were sintered for 2 hrs at temperatures lower than 1,000°C. The density of the BNT-BZ samples was at least 95% of the theoretical values. The scanning electron microscopy micrographs showed that small grains were embedded between large grains, causing a relatively wide grain size distribution. The density and grain size increased with increasing Zr concentration. A peak shift in X-ray diffraction patterns as well as the disappearance of several hkl reflections indicated some significant crystal-structure changes in these materials. Preliminary crystal-structure analysis indicated the existence of phase transition from a rhombohedral to an orthorhombic structure. The dielectric and ferroelectric properties were also found to correlate well with the observed phase transition.

Research paper thumbnail of Introduction to Group Theory with Applications in Molecular and Solid State Physics

Books by Dr. ALOKE VERMA

Research paper thumbnail of Research Trends in Material Science

Bhumi Publishing, 2023

In the vast landscape of scientific inquiry, the realm of Material Science stands as a dynamic cr... more In the vast landscape of scientific inquiry, the realm of Material Science stands as a dynamic crucible where innovation and discovery converge. As we embark on this journey through the pages of "Research Trends in Material Science," we find ourselves at the crossroads of tradition and cutting-edge exploration. This preface serves as a portal, inviting you to traverse the ever-evolving terrain of materials research-a discipline that has ceaselessly pushed the boundaries of human understanding. From the elemental building blocks to the intricacies of nanomaterials, this book encapsulates the diverse facets of material science that have captured the imaginations of researchers and engineers alike. As we delve into the chapters that follow, you'll witness the seamless interplay between theory and experimentation, where scientists unravel the secrets held within the molecular tapestry of materials. From the inception of innovative synthesis techniques to the application of advanced characterization methods, each page unfolds a narrative of progress and possibility. The landscape of material science is not merely confined to laboratories and academic institutions; it extends its tendrils into industries and everyday applications. The discoveries documented here bear the potential to revolutionize fields as diverse as electronics, healthcare, energy, and beyond. In the spirit of collaborative exploration, this compilation not only outlines current research trends but also beckons researchers, students, and enthusiasts to join the ongoing conversation. As we stand on the precipice of new breakthroughs, the collective pursuit of knowledge is paramount. May this book serve as both a testament to the achievements of the past and a compass guiding us toward the uncharted territories of tomorrow. Welcome to the forefront of Research Trends in Material Science, where curiosity knows no bounds, and the journey is as exhilarating as the destination.

Research paper thumbnail of CVD Graphene-1

Research paper thumbnail of Physics Education: The Role and Benefits of Cutting-Edge Technology

Pahale Pahal Prakashan, 2023

The integration of modern technology into the teaching-learning process has revolutionized educat... more The integration of modern technology into the teaching-learning process has revolutionized education across various disciplines, including physics. This article explores the application and utility of modern technology in enhancing the teaching and learning of physics. We discuss how technologies such as simulations, virtual laboratories, and interactive multimedia, and online platforms have transformed the traditional pedagogical approaches. By leveraging these advancements, educators can create more engaging, interactive, and personalized learning experiences for students, fostering deeper understanding and critical thinking skills. Moreover, the article highlights the potential challenges and considerations associated with the implementation of technology in physics education. The insights presented here emphasize the importance of a balanced and strategic incorporation of technology to maximize its benefits in the physics classroom.

Research paper thumbnail of CsPbX3 PEROVSKITES, A TWO-TIER MATERIAL FOR HIGH-PERFORMANCE, STABLE PHOTOVOLTAICS

Chinese Physical Society, 2023

The inorganic CsPbX3 perovskite has received a lot of attention due to its high carrier transport... more The inorganic CsPbX3 perovskite has received a lot of attention due to its high carrier transport efficiency and high thermal stability. However, solution-processed CsPbX3 perovskite solar cells' PCE is still significantly lower than that of their hybrid counterparts. Their devices' functionality is hampered by two main factors: insufficient film thickness and unwanted phase transition. Here, we demonstrate that the well-known solubility limitation for Cs precursors may be circumvented for the production of high-quality CsPbX3 perovskite films of considerable film thickness by using a novel precursor pair consisting of cesium acetate (CsAc) and hydrogen lead trihalide (HPbX3) (500 nm). To further encourage reduced-dimensional perovskite production, we added a small quantity of phenylethylammonium iodide (PEAI) to the solution. The resulting quasi-2D perovskites greatly lowered the trap density in the film by inhibiting unwanted phase transition. Using this method, we reported a 12.4 percent PCE for reduced-dimensional a-CsPbI3 perovskite photovoltaics, which is the best to date and has significantly longer performance lifetime than previous methods.

Research paper thumbnail of Futuristic Energy Source Of CTB (Cs 2 TiBr 6 ) Thin Films Based Lead-Free Perovskite Solar Cells: Synthesis And Characterization

Solid State Technology , 2020

This work is based on the Lead-free Perovskites Solar Cells (LFPSCs) for the application of photo... more This work is based on the Lead-free Perovskites Solar Cells (LFPSCs) for the application of photovoltaic (PV). Here, the selection of Lead-free Perovskites Halide, it gives the magnificent properties of optoelectronics, synthesis, most favorable bandgap, and ecofriendly nature. Therefore, we select the CTB for this work and promise to the synthesis of Cesium (Cs) based on highly efficient thin-film solar cells (TFSCs). It having a stable energy level and most promising bandgap of ⁓ 1.8 eV, large carrier-diffusion on the balanced term. First reported CTB thin-film based LFPSCs efficiency up to 3.3%. This work is dedicated to green environmental-based solar cell manufacturing for low cast highly efficient.

Research paper thumbnail of Characterization of CH3CH2NH3SnI3/TiO2 Heterojunction

Advances in Wireless Technologies and Telecommunication

In this chapter, CH3CH2NH3SnI3/TiO2 heterojunction lead-free perovskite solar cell (HLFPSCs) is p... more In this chapter, CH3CH2NH3SnI3/TiO2 heterojunction lead-free perovskite solar cell (HLFPSCs) is produced by the deposition of perovskite nanoparticles from a solution of CH3CH2NH3I and SnI3 in γ-hydroxyl butyric acid lactone on a 400 nm nanolayers of TiO2 showing (001) planes. The CH3CH2NH3SnI3 /TiO2 HLFSCs shows remarkable PV performance, with Jsc= 17.05 mA/cm2, Voc = 0.71 V, and FF = 0.61; resultant PCE of 6.5% in standard AM 1.5 G one-sun light intensity and PCE of 7.5% in lower light intensity was reported in this work. The beginning of such a simple solution treated HLFPSCs paves the way to appreciate low-cost, high-efficiency LFPSCs.

Research paper thumbnail of Characterization CH3NH3PbI3/TiO2 nano-based new generation heterojunction organometallic perovskite solar cell using thin-film technology

NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020

CH3NH3PbI3/TiO2 nano-based heterojunction organometallic perovskite solar cells (HOPSCs) have fas... more CH3NH3PbI3/TiO2 nano-based heterojunction organometallic perovskite solar cells (HOPSCs) have fascinated a great deal of responsiveness due to their collective advantages of high efficiency and have shown a lightning future as a photovoltaic semiconductor in next era solar cells having noble and auspicious photochemical nature. In the last decay, we have observed great progress in the perovskite solar cells (PSCs) efficiency recorded and presently recorded maximum efficiency of PSCs has reached 28.0% (Oxford PV) and it was reported at a very microdevice range of fewer than 1 mm 2. That way, the power conversion area increasing to a micro level, the efficiency record has unexpected changes. The characteristic causes are mainly credited to poor quality management mechanism of huge-surface HOPSCs using thin-film technology and lacking optimization of solar module design. In the current stage we all facing tow major obstacles like commercialization and new technology of PSCs research and development. That work, we observed magnificence development of huge-surface HOPSCs using thin-film technology solar modules and characterization based on standard solar cell parameters.

Research paper thumbnail of Re: Homology in Phylogenetic Analysis: Alignment of Transfer RNA Genes and the Phylogenetic Position of Snakes

Molecular Phylogenetics and Evolution, 1997

UK PubMed Central is a service of the UKPMC Funders Group working in partnership with the British... more UK PubMed Central is a service of the UKPMC Funders Group working in partnership with the British Library, University of Manchester and the European Bioinformatics Institute in cooperation with the National Center for Biotechnology Information at the US National ...

Research paper thumbnail of Study of Temperature Dependent Dialectical Properties of One System Ceramics using BNT-BZ

In this paper, Study of temperature dependent dialectical properties of one system ceramics like ... more In this paper, Study of temperature dependent dialectical properties of one system ceramics like BNT-BZ. Lead-free BNT-BZ ceramics were successfully prepared using the conventional mixed-oxide method. The samples were sintered for 2 hrs at temperatures lower than 1,000°C. The density of the BNT-BZ samples was at least 95% of the theoretical values. The scanning electron microscopy micrographs showed that small grains were embedded between large grains, causing a relatively wide grain size distribution. The density and grain size increased with increasing Zr concentration. A peak shift in X-ray diffraction patterns as well as the disappearance of several hkl reflections indicated some significant crystal-structure changes in these materials. Preliminary crystal-structure analysis indicated the existence of phase transition from a rhombohedral to an orthorhombic structure. The dielectric and ferroelectric properties were also found to correlate well with the observed phase transition.

Research paper thumbnail of Introduction to Group Theory with Applications in Molecular and Solid State Physics

Research paper thumbnail of Research Trends in Material Science

Bhumi Publishing, 2023

In the vast landscape of scientific inquiry, the realm of Material Science stands as a dynamic cr... more In the vast landscape of scientific inquiry, the realm of Material Science stands as a dynamic crucible where innovation and discovery converge. As we embark on this journey through the pages of "Research Trends in Material Science," we find ourselves at the crossroads of tradition and cutting-edge exploration. This preface serves as a portal, inviting you to traverse the ever-evolving terrain of materials research-a discipline that has ceaselessly pushed the boundaries of human understanding. From the elemental building blocks to the intricacies of nanomaterials, this book encapsulates the diverse facets of material science that have captured the imaginations of researchers and engineers alike. As we delve into the chapters that follow, you'll witness the seamless interplay between theory and experimentation, where scientists unravel the secrets held within the molecular tapestry of materials. From the inception of innovative synthesis techniques to the application of advanced characterization methods, each page unfolds a narrative of progress and possibility. The landscape of material science is not merely confined to laboratories and academic institutions; it extends its tendrils into industries and everyday applications. The discoveries documented here bear the potential to revolutionize fields as diverse as electronics, healthcare, energy, and beyond. In the spirit of collaborative exploration, this compilation not only outlines current research trends but also beckons researchers, students, and enthusiasts to join the ongoing conversation. As we stand on the precipice of new breakthroughs, the collective pursuit of knowledge is paramount. May this book serve as both a testament to the achievements of the past and a compass guiding us toward the uncharted territories of tomorrow. Welcome to the forefront of Research Trends in Material Science, where curiosity knows no bounds, and the journey is as exhilarating as the destination.

Research paper thumbnail of CVD Graphene-1