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ix, 188p. : 24 cm
Topic: Solar cells
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ix, 188p. : 24 cm
Topic: Solar cells
This thesis describes the development of a working thermal model of the Naval Postgraduate School's first CubeSat called NPS-SCAT and the accomplishment of environmental testing that has been completed to date in preparation for space launch. The primary mission of NPS-SCAT is to act as a Solar Cell Array Tester (SCAT), providing data on solar cell performance of various solar cells in Low Earth Orbit (LEO). As part of the satellite development process, a detailed test plan was developed and...
Topics: Solar cells, Satellites
390
390
Jun 10, 2014
06/14
by
onderkoffer
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Homemade Solar Cells
Topics: Homemade, Solar Cells
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159
Nov 18, 2014
11/14
by
seyedeh maryam vasei
texts
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this is my paper
Topics: solar cells, electrolyte
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326
Nov 19, 2015
11/15
by
onderkoffer
texts
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Homemade Solar Cells
Topic: Homemade Solar Cells
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53
Sep 13, 2018
09/18
by
Komp, Richard J
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xix, 196 pages : 23 cm
Topics: Solar cells, Photovoltaic power generation, Photovoltaic power generation, Solar cells,...
This thesis investigates the potential use of wurtzite Indium Gallium Nitride as photovoltaic material. Silvaco Atlas was used to simulate a quad-junction solar cell. Each of the junctions was made up of Indium Gallium Nitride. The band gap of each junction was dependent on the composition percentage of Indium Nitride and Gallium Nitride within Indium Gallium Nitride. The findings of this research show that Indium Gallium Nitride is a promising semiconductor for solar cell use.
Topics: Solar cells, Gallium nitride
A quantitative, contact-free method for extracting minority carrier diffusion length is used to measure the relatively small variations in diffusion length associated with dislocation bands in mismatched epitaxy in the p-type region of a two dimensional heterostructure of a triple junction (InGaP/GaAs/Ge) solar cell sample. These measurements are taken using the line scan mode of a Scanning Electron Microscope coupled with an optical microscope. This technique allowed the variations in...
Topics: Solar cells, Cathodoluminescence, Dislocations
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26
Nov 15, 2013
11/13
by
Kaufman, Allan (Allan H.)
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Includes bibliographical references (p. [90]-91) and index
Topics: Solar energy, Solar cells
In this thesis, a new method for developing realistic simulation models of advanced solar cells is presented. Several electrical and optical properties of exotic materials, used in such designs, are researched and calculated. Additional software has been developed to facilitate and enhance the modeling process. Furthermore, specific models of an InGaP/GaAs and of an InGaP/GaAs/Ge multi-junction solar cells are prepared and are fully simulated. The major stages of the process are explained and...
Topics: Solar cells, Photovoltaic cells
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Aug 18, 2020
08/20
by
Hantula, Richard
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32 p. : 24 cm
Topics: Solar energy -- Juvenile literature, Solar cells -- Juvenile literature, Solar energy, Solar cells
The Naval Postgraduate School Spacecraft Architecture and Technology Demonstration Satellite, NPSAT1, launching in the fall of 2006, will include a system to measure the performance of new experimental triplejunction solar cells. The measuring circuit in the Solar Cell Measurement System (SMS) is based on a circuit developed at the Naval Postgraduate School many years ago. It will trace the cells' current-voltage (I-V) curves while in orbit. The SMS consists of a radiation-hardened...
Topics: Solar cells, Measurement, Artificial satellites
347
347
Jun 26, 2011
06/11
by
King, RUdolph A.; Berry, Scott A.; Kegerise, Michael A
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This document describes an experimental study conducted to examine the effects of protuberances on hypersonic boundary-layer transition. The experiment was conducted in the Langley 20-Inch Mach 6 Tunnel on a series of 0.9-scale Shuttle Orbiter models. The data were acquired to complement the existing ground-based boundary-layer transition database that was used to develop Version 1.0 of the boundary-layer transition RTF (return-to-flight) tool. The existing ground-based data were all acquired...
Topics: SEMICONDUCTOR DEVICES, SOLAR CELLS, PATENTS
An optical, contact-free method for measuring minority carrier diffusion lengths is developed and demonstrated for a range of semiconductor materials used in high efficiency triple junction solar cells. This method uses a Scanning Electron Microscope (SEM) coupled with an optical microscope. The diffusion lengths, combined with minority carrier lifetime measured via time-resolved photoluminescence, allow for the computation of minority charge carrier mobility. The technique uses images to...
Topics: Physics, Photoluminescence, Solar cells, Anisotropy
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Jun 14, 2013
06/13
by
Maycock, Paul D; Stirewalt, Edward N; Maycock, Paul D. Photovoltaics, sunlight to electricity in one step
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Rev. ed. of: Photovoltaics, sunlight to electricity in one step. c1981
Topics: Photovoltaic power generation, Solar cells
ADA177981
Topics: Aeronautics, Solar cells, Solar batteries
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48
Oct 6, 2015
10/15
by
Sengil, Nevsan.
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ADA177981
Topic: Aeronautics,Solar cells,Solar batteries
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58
Apr 6, 2012
04/12
by
Starr, Gary
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Includes bibliographical references (pages 137-138)
Topics: Photovoltaic power generation, Solar cells, Solar houses, Photovoltaic power generation, Solar...
http://uf.catalog.fcla.edu/uf.jsp?st=UF000883297&ix=nu&I=0&V=D
Topics: Semiconductors, Solar cells, Solid state electronics.
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119
Mar 3, 2014
03/14
by
Dr. José M. Campiña
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Mechanisms of Electron Transport in Oxides modified with perovskite nanocrystals: LUMO injection (left) versus Surface Transport (right).
Topics: Solar Cells, Perovskites, Electron Transport, mechanisms
"March 1986."
Topics: Solar cells, Irradiation, Photovoltaic power generation
The Naval Postgraduate School Solar Cell Array Tester (NPS-SCAT) seeks to expand the CubeSat knowledge base and provide learning possibilities at the Naval Postgraduate School. This thesis discusses the design, testing, and integration of the electrical power sub-system for NPS-SCAT. The current design will be powered by a commercial-off-the-shelf power system developed by Clyde Space systems. Solar power generation will be via Spectrolab's improved triple junction solar cells. Satellite Tool...
Topics: Satellites, Equipment, Solar cells, Solar energy
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At the time of the sun a straight line with solar cells may not necessarily produce the maximum output. Various ways continue to be done in order to get the maximum output. The maximum utilization of output from solar cells will accelerate the function of the solar cell. The use of reflectors is an excellent way to maximum output with effective time. The author will analyze solar cells with flat mirror, convex mirror, concave mirror, and without reflector. Each reflector is given varying...
Topics: Efeciency, Mirror, Polycrystalline, Reflector, Solar cells
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Aug 9, 2020
08/20
by
Chopra, Kasturi L., 1933-
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xvi, 607 pages : 24 cm
Topics: Solar cells, Thin films, Thin film devices, Dünne Schicht, Dünnschichttechnik, Solarzelle, Thin...
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80
Oct 4, 2015
10/15
by
Gold, Don William
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"March 1986."
Topic: Solar cells,Irradiation,Photovoltaic power generation
Click here to view the University of Florida catalog record
Topics: Solar cells, Silicon, Thin films, Semiconductors
The minority carrier diffusion length is a critical parameter in the development of next generation Heterostructure Bipolar Transistors (HBT) and highly efficient solar cells. A novel technique has been developed utilizing direct imaging of electron/hole recombination via an optical microscope and a high sensitivity charge coupled device coupled to a scanning electron microscope to capture spatial information about the transport behavior (diffusion lengths/drift lengths) in luminescent solid...
Topics: Electron microscopes, Mathematical models, Solar cells, Physics
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3.0
Aug 4, 2020
08/20
by
Green, Martin A
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93 p. : 24 cm
Topics: Solar cells, Solar batteries, Photovoltaic power generation
"NPS-67-85-006."
Topics: Solar cells, Testing, Solar energy, laboratory manuals
The purpose of this thesis is to consider PhotoVoltaic Power Converter (PVPC) technology, developed by Atira Technologiesʼ, and its prospects for military and space applications. This research will validate the hypothesis that PVPC technology enables a solar power system to produce usable power during low- and no-light conditions which standard solar power systems fail to provide. Solar cell panels are exposed to sunlight at different angles and with variable intensity, therefore the...
Topics: Solar energy, Solar cells, Sunshine, Electrical engineering
The goal of this thesis is to explore the utility of in-situ optical imaging of charge transport imaging in multi junction solar cells. An in-situ measurement of a manufactured solar cell's key material parameters is difficult. Many sophisticated models may be used to predict performance of new cell arrangements and suggest next generation improvements. In parallel, an experimental view into a complex, multi layered, alloyed semiconductor device can provide important feedback for material...
Topics: Solar cells, Photovoltaic cells, Semiconductors, Junctions, Materials
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2.0
Oct 30, 2020
10/20
by
Starr, Gary
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140 pages : 23 cm
Topics: Photovoltaic power generation, Solar cells, Solar houses
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79
Oct 5, 2015
10/15
by
Mabie, Kevin T.
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"NPS-67-85-006."
Topic: Solar cells,Testing,Solar energy,laboratory manuals
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Feb 6, 2018
02/18
by
*K. Munindra Reddy1 1 Assistant Professor, Department of EEE, Vaagdevi Institute of Technology & Science, Proddatur, A.P.
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ABSTRACT Design of the products based on nanotechnology for renewable energy generation has increased due to an increased efficiency of lighting and heating, increased electrical storage capacity. Just like geothermal energy Nanotechnologies provide essential improvement potentials for the development of both conventional energy sources and renewable energy sources. Nanotechnologies could contribute to the optimization of the layer design and the morphology of organic semiconductor mixtures in...
Topics: Pervoskites, Quantum dots, Dye-sensitized solar cells
Click here to view the University of Florida catalog record
Topics: Solar cells, Thin films, Photovoltaic power generation
Many improvements have been made in the design and manufacture of high efficiency solar cells. The need to understand the behavior of these new types of solar cells is crucial to the procurement of future space systems, both commercial and military. This thesis studies the results of irradiating three commonly used solar cells with 30 MeV electrons using the Naval Postgraduate School Linear Accelerator. A comparison of the performance characteristics of the three cells is made using commonly...
Topics: Solar cells, Effect of radiation on, Radiation
1,222
1.2K
Jul 12, 2010
07/10
by
Malkin, M. S
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Test firings and launches will release air pollutants causing a temporary localized small degradation in air quality near the tests or launch site. Areas adjacent to the site will also be subjected to moderate sound levels of predominantly low frequencies for short durations. During the launch phase, hydrogen chloride will be introduced into the stratosphere causing a small decrease in ozone. Temporary perturbations to the ionosphere will occur during orbital maneuvers and entry will have no...
Topics: CZOCHRALSKI METHOD, PRODUCTION COSTS, SILICON, SOLAR CELLS
The evaluation focused on the following subjects: (1) the relative merits of alternative solar cell materials, based on performance and availability, (2) the best manufacturing methods for various solar cell options and the effects of extremely large production volumes on their ultimate costs and operational characteristics, (3) the areas of uncertainty in achieving large solar cell production volumes, (4) the effects of concentration ratios on solar array mass and system performance, (5) the...
Topics: NASA Technical Reports Server (NTRS), ARTIFICIAL SATELLITES, EVALUATION, POWER SUPPLY CIRCUITS,...
The Naval Postgraduate School's next satellite to be launched will be the technology demonstration experiment NPSAT1 in 2006. This satellite will be laden with some of the school's top research projects including on orbit solar cell I-V curve testing. The designers of this satellite were presented with three types of solar cells with which to power their satellite: silicon, gallium arsenide, and triple junction cells. This thesis evaluates those three types of cells on the merits of their...
Topics: Solar cells, Artificial satellites, NPSAT1, Solar simulator, LINAC
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Jul 11, 2010
07/10
by
NON
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No Abstract Available
Topics: ELECTROCHEMISTRY, SILICON, SOLAR CELLS, EMISSION SPECTRA, VAPOR PRESSURE
Click here to view the University of Florida catalog record
Topics: Solar cells, Bipolar transistors, Drift mobility, Grain boundaries
Prior thesis work has demonstrated the possibility of extending the flight time of military Small Unmanned Aerial Vehicles (SUAV) by 200% with the implementation of thinfilm photovoltaic (TFPV) cells. In this thesis, we investigate how thin-film photovoltaic cells, made out of Copper Indium Gallium Di-Selenide (CIGS) semiconductor materials and mounted on the wings of the Raven RQ-11B SUAV, provide sufficient electrical power to fully operate the UAV for extended periods of time. This research...
Topics: Drone aircraft, Lithium ions, Photovoltaic cells, Solar cells
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xix, 228 p. : 25 cm
Topics: Photovoltaic power systems, Photovoltaic power generation, Solar cells
A genetic algorithm was used to optimize the power output of multi-junction solar cells. Solar cell operation was modeled using the Silvaco ATLASTM software. The output of the ATLASTM simulation runs served as the input to the genetic algorithm. The genetic algorithm was run as a diffusing computation on a network of eighteen dual processor nodes. Results showed that the genetic algorithm produced better power output optimizations when compared with the results obtained using the hill...
Topics: Electrical engineering, Genetics, Algorithms, Solar cells, Computer programs
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4.0
Nov 5, 2020
11/20
by
Bulletin of Electrical Engineering and Informatics
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Organo-halide Perovskite Solar Cells (PSC) have been reported to achieve remarkably high power conversion efficiency (PCE). A thorough understanding of the role of each component in solar cells and their effect as a whole is still required for further improvement in PCE. In this paper, the effect of Molybdenum Disulfide (MoS2 ) in PSC with mesoporous structure configuration was analyzed using Solar Cell Capacitance Simulator (SCAPS). With the MoS2 layer which having two-fold function, acting as...
Topics: Active layer, Device simulation, MoS2, Perovskite, Solar cells
The inefficiency of solar cells due to high operating temperatures presents a growing issue for the spacecraft industry. Currently, the problem is solved by accepting the manufactured designs and compensating for losses with larger solar arrays. Building upon prior thesis work at the Naval Postgraduate School, this thesis utilizes Silvaco's ATLAS software as a tool to simulate the performance of a typical InGaP/GaAs/Ge multi-junction solar cell at various temperatures. Additional optimization...
Topics: Electrical engineering, Industries, Computer programs, Solar cells, Space vehicles
Thermophotovoltaic cells are a good candidate for use in high efficiency radioisotope thermoelectric generator (RTG) power devices for deep space missions. This thesis examines the use of Silvaco Virtual Wafer Fabrication Software as a tool for designing and optimizing TPV cells for different possible spectra. It gives results for GaSb and InGaAs cells optimized to the AM0 spectrum which closely match published data as well as hypothetical cells optimized to the spectrum of a 1300K blackbody.
Topics: Radioisotopes in aeronautics, Thermoelectric generators, Photovoltaic effect, Solar cells
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Jan 28, 2020
01/20
by
Mazer, Jeffrey A., 1948-
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xv, 216 p. : 25 cm
Topics: Solar cells, Diodes, Semiconductor, Photovoltaic power generation, Silicon crystals
Journal of Research of the National Bureau of Standards
Topics: gamma rays, photovoltaic effect, silicon solar cells, x rays.
