Essays Tagged: "solar cells"

SolarSystem

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

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

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

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

ICP Industry

consists of two main components: a photo sensing, processing, and stimulus driving chip powered by solar cells and simple electrode array. The chip is placed in front of the damaged retina where it c ...

(2 pages) 467 0 0.0 Feb/2008

Subjects: Science Essays > Biology > Human Biology

Artificial Retina

consists of two main components: a photo sensing, processing, and stimulus driving chip powered by solar cells and simple electrode array. The chip is placed in front of the damaged retina where it c ...

(2 pages) 1249 0 0.0 Feb/2008

Subjects: Science Essays > Biology > Human Biology

Space

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) 401 0 3.0 Feb/2008

Subjects: Science Essays > Chemistry

Energy Resource Challenges

sented in the video.1. Wind power- the use of large wind turbines are used to create electricity.2. Solar power- solar panels (cells) are used to collect energy from the suns rays.3. Biomass fermentat ... er big challenge is obtaining the turbines and associated equipment to build and operate wind farms.Solar power challenges include; does not work at night, expensive to build solar power stations and ...

(2 pages) 27 0 3.0 Jan/2009

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