Browsing by Advisor "Sarma, D D"
Now showing items 1-18 of 18
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Doping And photophysical Properties Of II-VI Semiconductor Nanocrystals
(2010-06-03)Semiconductor nanocrystals with sizes comparable to the corresponding bulk excitonic diameter exhibit unique size-dependent electronic and optical properties resulting from quantum confinement effect. Such nanocrystals not ... -
Effects Of Disorder On Physical Properties Of Selected Transition Metal Oxides
(2013-02-14)Disorder in materials often brings in new and exotic physical properties along with it. It is thus very important to study different kinds of disorder and their implications on various material properties. In this thesis, ... -
Electronic and Magnetic Structures of Some Selected Strongly Correlated Systems
(2018-01-04)Transition metal oxides and chalcogenides are an ideal platform for demonstrating and investigating many interesting electronic phases of matter. These phases emerge as a result of collective many body interactions among ... -
Electronic, Magnetic and Local structure of Some Selected Strongly Correlated Systems
According to independent electron band structure theories, transition metal oxides (TMOs) with partially filled 3d valence band are predicted to be metallic in nature. Though in reality, most of them are insulators. Mott ... -
Internal Structure and Self-Assembly of Low Dimensional Materials
(2018-05-01)The properties of bulk 3D materials of metals or semiconductors are manifested with various length scales(e.g., Bohr excitonic radius, magnetic correlation length, mean free path etc.) and are important in controlling their ... -
Investigation Of A Novel Class Of Conducting Polyaniline And Related Systems
(2007-10-25)The interest in conjugated polymers has been two-fold. A rich variety of intriguing physical phenomena, combined with its immense technological implications in the area of molecular electronics, sensors etc. has inspired ... -
Investigation of Dielectric and Magnetic Properties of Some Selected Transition Metal Oxide Systems
(2018-07-23)High dielectric constant materials have tremendous impact on miniaturization of devices that are used in various applications like wireless communication systems, microelectronics, global positioning systems, etc. To store ... -
Investigation Of Electronic And Magnetic Structure Of Transition Metal Oxides With Emphasis On Magnetoresistive Systems
(2009-09-10)Electronic structure of transition metal oxides has been a subject of intense research since decades due to the wide spectrum of properties that they exhibit, like high temperature superconductivity, metal-insulator ... -
Investigation Of Electronic Structure Of Transition Metal Oxides Exhibiting Metal-insulator Transitions And Related Phenomena
(2010-07-26)Transition metal oxides have proven to be a fertile research area for condensed matter physicists due to the fascinating array of superconducting, magnetic and electronic properties they exhibit. A particular resurgence ... -
Investigation of strongly correlated paramagnetic state at sub-Kelvin regime for S ≥ 1/2 systems: Role of disorder and dimensionality
A magnetic system usually orders ferro- or anti-ferromagnetically at temperatures comparable to interaction strength between the spins. Moreover, an interacting spin system tends to order with the increase of dimensionality ... -
Local Structural Investigations of Composition-driven Changes in Inorganic Solid Solutions
A smaller sized dopant replacing a larger sized element in a compound creates chemical pressure, resulting in a contraction of the lattice parameter and likewise a “negative” pressure is created by substitution of larger ... -
Materials Chemistry in Search of Energy Materials : Photovoltaics and Photoluminescence
(2017-11-28)One third of world’s total energy is used in production of electricity and one fifth of the total electricity produced in the world is used in lighting. Hence, the materials that have high potential in the field of ... -
Opto-electronic Properties of a Few Dimensionally Controlled Hybrid Halides and Related Systems
To mitigate the adverse environmental effects of burning fossil fuels, it became necessary to explore alternative ‘clean’ renewable energy sources to meet the ever-increasing energy demands. While silicon-based solar cell ... -
Optoelectronic and Magnetic Properties of 2D Layered Organic-Inorganic Hybrids and Selected Transition Metal Oxides
Perovskites with the general chemical formula ABX3 can be categorized into oxides and halides depending on the nature of the X anion. 3D organic-inorganic halide perovskites are extensively studied in the context of solar ... -
Photoemission Studies Of Metal-Insulator Transition In Some Oxide Bronzes
(2013-06-21)Metal-insulator transition is one of the most important properties observed in certain materials which has been studied widely using a wide range of experimental techniques as well as theoretical models. This kind of a ... -
Photophysical Properties of Manganese Doped Semiconductor Nanocrystals
(2018-06-08)Electronic and optical properties of semiconducting nanocrystals, that can be engineered and manipulated by various ways like varying size, shape, composition, structure, has been a subject of intense research for more ... -
Structure - Property Correlation in MA1-yFAyPbX3 (X = I, Br) Perovskites
Hybrid Organic-Inorganic Lead Halide Perovskites (HOIP) are represented by APbX3, where A is the methylammonium cation (MA: (CH3NH3)+) or the formamidinium cation (FA: (CH(NH2)2)+), X is halide anion. HOIP have emerged as ... -
Structure, Dynamics and Optical Properties of Organic-Inorganic Hybrid Perovskites
Organic-inorganic hybrid perovskites have emerged as promising photovoltaic materials in the last few years, with the possibility of easy, solution synthesis. In this thesis, we have investigated some intrinsic material ...