Browsing by Advisor "Avasthi, Sushobhan"
Now showing items 1-10 of 10
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Band-matched transport layers and intrinsically stable perovskite solar cells for application to perovskite Si tandem cells
Hybrid perovskite/silicon tandem solar cells offer low-cost alternatives to the commercially established silicon solar cells. In this thesis, we present the material and device optimizations of the subcells that can be ... -
Gallium Oxide Vertical Power Devices - Modeling, Material Growth, and Hetero-epitaxial Integration with Silicon
𝛽-Ga2O3 is a candidate for a new generation of power semiconductors that can significantly lower the conduction losses and increase power density in the power converters. PFOM or power figure of merit (V2Br/Ron) is a ratio ... -
Growth of hole-conducting Cu2O & CuO semiconductors using CVD for next-generation electronic devices: Thin Films Transistors, Memristors, and Gas Sensors
Semiconducting oxides with visible-range transparency and high electrical conductivity have tremendous potential for transparent CMOS devices. Oxide semiconducting materials are a good choice for emerging transparent ... -
Heterogeneous Integration of Device Grade Epitaxial Germanium on Silicon Platform using Laser-Induced Crystallization for Optoelectronic Applications
Integration of germanium on silicon platform has applications in III-V photovoltaics, integrated silicon photonics, high-speed transistors, etc. In this work, we have used laser-induced crystallization (LIC) to obtain ... -
Heterogeneous Integration of Thin-film Germanium on Silicon and Steel
Integration of germanium (Ge) on low cost substrates such as silicon and steel open several applications such as low cost III-V photovoltaics, beyond silicon CMOS and optoelectronics applications. However, growth of germanium ... -
Improving Efficiency of Perovskite and Silicon Solar Cells by Reducing Surface Recombination, Bulk Recombination, and Thermalization Losses
Solar photovoltaic (PV) technology stands at the forefront of renewable energy solutions, driven by the urgent need to mitigate climate change and secure sustainable energy sources. As the demand for cleaner energy ... -
Organic-Inorganic Heterojunctions for Application in Perovskite Based Photovoltaics
Organic-inorganic lead halide perovskite solar cells (PSC’s) research has seen most notable progress in the field of photovoltaics (PV). The very first PSC was reported in the year 2009 with efficiency of 3.8%, which rapidly ... -
Oxide Semiconductors for Silicon Tandem Solar Cells
In tandem solar cells two or more solar cells share the solar spectrum. The structure consists of two sub-cells on top of each other, with the top cell absorbing the blue photons and the bottom cells absorbing the red ... -
Structural and Electrical Properties of Epitaxial Functional Oxides on Silicon
Functional oxides hold immense potential for revolutionizing electronics due to their diverse applications, from energy storage and actuation to electro-optics, sensors, and memory. However, their integration with Si CMOS ... -
Transition metal oxide absorbers for photovoltaics
Several oxides are non-toxic, stable, and can be deposited using inexpensive techniques on a variety of substrates. There is a compelling case for use of oxide in photovoltaics, referred to as “all-oxide photovoltaics”. ...