Essays Tagged: "Solar cell"


Solar cells today are mostly made of silicon, one of the most common elements onEarth.The crystallin ... ehind noharmfulwaste products. Photovoltaic cells work effectively even in cloudy weather and unlikesolarheaters, are more efficient at low temperatures. They do their job silently and there are nomov ... o wear out. It is no wonder that one marvels on how such a device wouldfunction.To understand how a solar cell works, it is necessary to go back to some basic atomicconcepts. In the simplest model of ...

(4 pages) 61 0 4.0 May/1996

Subjects: Science Essays > Physics

Our Solar System

12th grade essay on chemical bonds in our solar system. Well Researched!Solar cells today are mostly made of silicon, one of the most common e ... today are mostly made of silicon, one of the most common elements on Earth.The crystalline silicon solar cell was one of the first types to be developed and it is still the mostcommon type in use tod ... ind no harmfulwaste products. Photovoltaic cells work effectively even in cloudy weather and unlike solarheaters, are more efficient at low temperatures. They do their job silently and there are nomov ...

(4 pages) 101 0 5.0 Nov/1996

Subjects: Science Essays > Space

Detailed information on SOLAR ENERGY in essay form.

re is light, warmth and food on the earth. Many kinds of energy on earth originate from and through solar radiation.Since the sun doesn't have the same strength at all places and all times, the earth ... not to mortgage the future of the coming generations, but also for economic and ecological reasons.Solar energy?·Solar energy today?The direct use of solar energy will very probably not be abl ...

(8 pages) 276 0 4.6 Nov/2002

Subjects: Science Essays > Earth Sciences

Solar power: photovoltaics The journey from photons to electrons

IntroductionSolar power is obtained mainly by the use of solar cells. The photovoltaic (PV) effect is the basic ... light, voltaic = electricity), convert sunlight directly into electricity.It is one of the forms of solar cells, in which light falling on a two-layer semi-conductor device produces a photo voltage or ... pable of driving a current through an external circuit and thereby producing useful work.Silicon in solar cellsPhotovoltaic (PV) cells are made of special materials called semiconductors such as silic ...

(6 pages) 45 0 3.0 Sep/2003

Subjects: Science Essays

Solar cell technology.

Solar cell technology dates back to 1839, when the French physicist Antoine-Cesar Bequerel observed ... solution would create an electric current. Later in 1877, Charles Fritts constructed the first true solar cell by using junctions formed by coating the semiconductor selenium with an ultra thin layer ... One device was the photometer, used in photography. These cells were still very inefficient though. Solar cell efficiency finally saw substantial progress with the development of the first silicon cel ...

(10 pages) 119 2 4.2 Nov/2003

Subjects: Science Essays

Solar Energy

Tran 1 Solar Energy About 47 percent of the energy that the sun releases to the earth actually reaches the ... he ground. About a third is reflected directly back into space by the atmosphere. The time in which solar energy is available, is also the time we least need it least - daytime. Because the sun's ener ... e need to convert the suns energy into an energy that can be stored. One possible method of storing solar energy is by heating water that can be insulated. The water is heated by passing it through ho ...

(6 pages) 137 1 1.0 Nov/2003

Subjects: Science Essays > Physics

Photovoltaics (Solar Cells).

Photovoltaics (solar cells) are semiconductor devices that convert sunlight into direct current (DC) electricity. G ... ventional appliances, and operate in parallel with and interconnected to the utility grid.A typical solar cell is composed of an ultra-thin layer of phosphorus-doped silicon, on top of a thicker layer ... vides momentum and direction to light-stimulated electrons, resulting in a flow of current when the solar cell is connected to an electrical load.Batteries are often used in PV systems for the purpose ...

(1 pages) 42 0 3.5 Jan/2004

Subjects: Science Essays > Technology

Solar energy

are funning out of these fuels. Pretty soon we will have run out of fuels for our houses and cars. Solar energy is a good alterative energy source. Solar energy can be found in Texas.It's a very clea ... od alterative energy source. Solar energy can be found in Texas.It's a very clean source of energy. Solar energy works by letting the panels take in the sun and heat up water which makes steam and tur ...

(2 pages) 90 0 3.0 Jun/2004

Subjects: Science Essays

Photovoltaic Cells.

hich a PV cell converts sunlight into electricity. Sunlight is composed of photons, or particles of solar energy. These photons contain various amounts of energy corresponding to the different wavelen ... . These photons contain various amounts of energy corresponding to the different wavelengths of the solar spectrum. When photons strike a PV cell, they may be reflected or absorbed, or they may pass r ...

(2 pages) 19 0 3.0 Sep/2005

Subjects: Science Essays > Physics

The History of the Radio.

that can be harnessed and converted to a useable form. One great source of renewable energy is the Solar Energy for our sun. This energy can be converted to a usable form in a variety of ways. I will ...

(7 pages) 22 0 5.0 Sep/2005

Subjects: Science Essays > Technology

Solar PanelsS

What are the benefits of a Solar Panel and how does it work?My hypothesis for the question was:I thought the benefits of a sola ... e to save money and have something that worked without electricity when I went camping. I thought a solar panel worked when it heated up from the sun causing pressure to make a motor turn.Materials:Fo ... n it heated up from the sun causing pressure to make a motor turn.Materials:For my project I used a solar panel, two stands, a motor, and a propeller.Procedure:1. I placed the propeller on the axle of ...

(2 pages) 31 0 3.0 Apr/2006

Subjects: Science Essays > Physics

Renewable Energy (Solar and Hydro) Research Assignment

, how they produce electricity, facts and stats, environmental impact, advantages and disadvantages.Solar and hydro power are advantageous, easy to acquire and eco-friendly sources of power. They are ... itted over a grid system like the energy produced by using fossil fuels. You can create just enough solar electricity to power your house or just enough hydroelectricity to power a small community. So ...

(10 pages) 143 0 3.0 Mar/2007

Subjects: Science Essays > Environmental Science


t most of them are abundant and are used in their natural form as they found in the biosphere (e.g. Solar power, wind power and biomass energy) where as in the case of petroleum and nuclear there are ... re continuously available and will never be depleted (at least in the near future as in the case of solar energy). Third, the use of natural renewable resources have fewer impact on the environment as ...

(9 pages) 71 0 0.0 Nov/2001

Subjects: Businesss Research Papers

The Sun

could convert light into electricity with 1-2% efficiency (“the efficiency of a solar cell is the percentage of available sunlight converted by the photovoltaic cell into electrici ... igh exertion of energy resources and also effect the environment. Energy conversion process between solar energy to electricity energy is clean and it does not cause any impact on the natural environm ...

(13 pages) 34 0 3.0 Feb/2008

Subjects: Science Essays > Chemistry


How Solar Panels Work How do solar panels work? Do people just take a sheet of metal and point i ... etal and point it to the sun and get energy? That's not how it works. It takes a lot of work to get solar panels going. How are solar panels made, how do solar concentrates work, and how do solar pane ... ntrates work, and how do solar panels convert electricity? Those are the main questions asked about solar panels. First, how do people put together solar panels? Solar panels are made out of ga ...

(2 pages) 567 0 3.0 Feb/2008

Subjects: Science Essays > Chemistry

Renewable Energy

abors intensive providing a wide range of employment opportunities, from high-tech manufacturing of solar cell components to maintains jobs at wind power plants. According to Wisconsin energy bureau ? ... _) from?... (Industrial revaluation). Carbon dioxide which tunes to stay in the earth surface traps solar heat by this the average global temperature increase. Resulting in change is amount and patter ...

(3 pages) 60 0 0.0 Feb/2008

Subjects: Science Essays > Environmental Science

Solar Panels

In this article, we will examine solar cells to learn how they convert the sun's energy directly into electricity. In the process, yo ... ily basis, and why we still have more research to do before the process becomes cost effective. The solar cells that you see on calculators and satellites are photovoltaic cells or modules (modules ar ... oltage produced by the electric fields, helps us figure out how much power or wattage that a single solar cell can produce.What kind of batteries are used in PV systems? Although several different kin ...

(3 pages) 16 0 2.3 Mar/2009

Subjects: Science Essays > Technology

Role Of Engineers

om renewable sources over the conventional non renewable sources." The cleanest supply of energy is solar, this energy is in endless supply from the sun, however the solar cells that are used today ar ... red to energy used by the cell, the other 85% is lost. Engineers will need to design more efficient solar cells and the technology is getting better every year, today solar cell can get up to a 40% ef ...

(8 pages) 1 0 0.0 Oct/2012

Subjects: Science Essays > Engineering

The Energy Crisis

le consume energy for their luxury and comfort.The available technologies for energy production are solar panel, windmill, hydroelectric power, nuclear power plant and biomass. These are all renewable ... and biomass. These are all renewable energies and the most preferred one in developed countries is solar panel. There are two types of solar panels, they are: thin film and silicon. Silicon is the mo ...

(4 pages) 0 0 0.0 Mar/2014

Subjects: Science Essays > Physics

Scenario Analysis-A Solar Panel Manufacturer

Executive SummaryNews articlesArticle 1New Solar Cell is completely hybrid material and record efficiencyABC news, 1/6/2013The big brains at th ... fficiencyABC news, 1/6/2013The big brains at the Monash University have developed a ground breaking solar cell that has three desirable featuresVery high light absorption and efficiencyMostly made of ... fficiencyMostly made of cheap plastic and uses minimal semiconductor materialFlexible texture"These solar cells surpass the usual light-trapping capability for absorbing materials," says Howard Walowi ...

(8 pages) 0 0 0.0 Oct/2014

Subjects: Businesss Research Papers