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Showing 1 to 20 of 27 for “"Photovoltaic cell"”.
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Photovoltaic cell efficiency at elevated temperatures
In order to determine what type of photovoltaic solar cell could best be used in a thermoelectric photovoltaic hybrid power generator, we tested the change in efficiency due to higher temperatures of three types of solar cells: a polymer cell, an amorphous silicon cell and a CIS cell. Using an …
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Radiation Study of the Organic Photovoltaic Cell P3HT:PCBM
… inexpensive, dependable, radiation hard solar cells for use in space applications has led to attention being focused on organic semiconductor based solar cells. Such cells are lightweight, flexible and are potentially useful in conformal coverage applications. While these solar cells are less …
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Spectral Conversion of Light Using Cadmium Selenium Zinc Sulfide Core Shell Quantum Dots to Increase the Efficiency of Photovoltaic Cells
Photovoltaics harness energy emitted from the sun. When the sun's energy is absorbed by a photovoltaic cell array, photons of light are converted into current. The amount of current produced by a photovoltaic cell is calculated by the difference between the energy of the incoming photon and the …
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Full spectrum utilization for high-efficiency solar energy conversion
… solar energy harvesting exist: solar thermal and photovoltaic. Solar thermal energy harvesting offers the distinct ability to both utilize the full solar spectrum and provide dispatchable electrical power to the grid. By contrast, the generation of power via the photovoltaic effect can reduce the …
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Conceptual design and multidisciplinary optimisation of power device for solar powered aircraft
Solar-powered aircraft is propelled by a photovoltaic cell that converts solar energy into electrical energy. The extra energy is stored in a rechargeable battery for later use when solar energy is not available. The performance of solar-powered aircraft is limited to solar radiation availability, …
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Quantum efficiency and fission rate in tetracene
Using singlet fission in a photovoltaic cell, the theoretical energy conversion efficiency limit is larger than the Shockley-Queisser limit due to two excitons produced with one incident photon. In a singlet fission material, an absorbed photon excites a singlet exciton and then split into two …
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High-performance metallo-dielectric photonic crystals: Design, fabrication, and testing of a practical emitter for portable thermophotovoltaic generators
Hydrocarbon thermophotovoltaic (TPV) systems, a concept first proposed in the 1950s, are emerging as a viable power source for small, portable generators for a spectrum of applications such as UAVs and robotic platforms. In a TPV system, an emitter is heated to above 1000 K, producing thermal …
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A practical high temperature photonic crystal for high performance thermophotovoltaics
… selective emitter for high performance thermophotovoltaics (TPV) that offers high optical performance, high temperature stability, and the ability to be fabricated in large area samples. In a TPV system, a heat source brings the photonic crystal emitter to incandescence, and the resulting …
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Quantum dot polymer composite materials for light management in optoelectronic devices
… efficiency of optoelectronic devices, including photovoltaic concentrators and LED display modules. Semiconductor nanocrystals, also known as quantum dots (QDs), serve as the pivotal luminescent materials in these devices. A quantum dots encapsulation method was developed here to homogeneously …
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Integrated Tandem Dye Sensitized Solar Cell (DSSC)-Lithium Ion Battery
… less space consumptions. Herein, a sustainable photovoltaic cell integrated with an energy storage device was developed that addresses short term photovoltaic (PV) power variability using dye sensitized solar cell (DSSC) in a tandem structure with thin film based lithium-ion battery. As lithium …
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Surface plasmon polariton mediated energy transfer from external antennas into organic photovoltaic cells
… improvements in the performance of organic photovoltaic devices in recent years, the tradeoff between light absorption and charge separation efficiency remains pervasive; increasing light absorption by increasing the device thickness leads to a decrease in exciton diffusion efficiency and …
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Off-Metal Synthesis of Some Aryl Substituted Rhenium n5-Cyclopenta [C] Pyridazyl Complexes
… Light Emitting Diodes (OLEDs) and Organic Photovoltaic Cell (OPVs). Our recent efforts has been focused on the synthesis of a variety of 5,6-fused ring pyridazines. These fused heterocycles will serve as synthetic models and building blocks for potential organic or organometallic conducting …
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Application of Pulsed D.C. Magnetron sputtering deposition for the component layers of CuInSe2 thin film photovoltaic cells
… CuInSe 2 (CIS), thin film solar cells. PDMS can use high plasma densities withlong term arc free operation for the reactive sputtering of dielectric materials and can producefilms with good crystalline properties, even at low substrate temperatures. However, thetechnique has not …
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Photonic crystals for high temperature applications
… temperature applications, for instance thermophotovoltaic (TPV) energy conversion and selective solar absorption. We begin with the exploration of refractory two-dimensional (2D) MPhC slabs as selective thermal emitters that approach the emittance of a blackbody below a cutoff wavelength, and …
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Commercialization potential of dye-sensitized mesoscopic solar cells
… sun is the champion of all energy sources and photovoltaic cell production is currently the world's fastest growing energy market. Dye-sensitized solar cells (DSCs) are photoelectrochemical cells which mimic the natural photosynthesis process to generate solar electricity. Typically, a …
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Optical Antenna Photovoltaics & Making Metallic Nano-rods
… is a growing demand for cheap, high efficiency photovoltaic cells. Of the many emerging solar harvesting technologies, a concept that has not been widely explored is that of optical antennas. In 1972 Bailey et al.[1] explored scaling down of antenna technology to match the solar spectrum. A …
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Inverse Design and Optimization Methods for Thermophotovoltaic Emitters made of Tungsten Gratings
… as emitters increase the efficiency of thermophotovoltaic (TPV) systems. These gratings work by altering the emittance spectrum incident on the photovoltaic cell to better match the band gap of the cell. Photons at slightly higher energies than the band gap are the most efficient as they …
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Forster Resonance Energy Transfer in materials used in Luminescent Solar Concentrators
… efficient way to concentrate sun light into a photovoltaic cell. Solar cells can be made to perform better under high illumination conditions and LSCs can be employed to perform this task. Effective utilization of space is another added advantage of coupling LSCs with solar cells. They are made …
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Microgrid Modeling, Planning and Operation
… in Matlab/Simulink including Diesel Engine, Fuel Cell, Micro Gas Turbine, Wind Turbine, Photovoltaic Cell, along with the detailed modeling of short-term storage (Battery, Pumped Hydro Storage, Flywheel, and Supercapacitor). In addition to steady-state study, the thesis will also discuss the …
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Computer simulation of stand-alone photovoltaic systems with battery storage
… accurately the performance of stand alone photovoltaic systems with battery storage on an hourly basis for one simulated year. The program incorporates models of the POA irradiance, the photovoltaic cell · temperature and the battery temperature to simulate the environmental conditions of …
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