Types of photovoltaic cells ppt

What is a photovoltaic or solar cell?

The document discusses photovoltaic or solar cells. It defines solar cells as semiconductor devices that convert light into electrical energy. The construction of a basic silicon solar cell is described, involving a p-type and n-type semiconductor material forming a PN junction.

What are the components of a photovoltaic system?

It discusses the components of a photovoltaic system including solar arrays, mounting systems, inverters, and batteries. It also describes different types of solar cell technologies like thin film and crystalline silicon, and provides background on the growth of photovoltaics over time in India and worldwide.

What is the difference between a solar panel and a photovoltaic array?

Despite this difference, they all perform the same task of harvesting solar energy and converting it to useful electricity. The most common material for solar panel construction is silicon which has semiconducting properties. Several of these solar cells are required to construct a solar panel and many panels make up a photovoltaic array.

What are the advantages of solar photovoltaic (PV)?

Advantages of Solar photovoltaic (PV) Benefit from the Governments feed‑in tariff. The feed-in tariff is guaranteed by the Government for 20 years. Panels designed for European countries generate power even on cloudy days. Clean energy means carbon emissions can be reduced. Producing your own power protects against rising energy prices.

What are the disadvantages of solar photovoltaic (PV)?

Disadvantages of Solar photovoltaic (PV) A large area of unshaded south, south-west or south-east facing roof is required to maximise payback. Smaller systems can be installed but payback will be longer. Panels degrade over time by approximately 20% over 25 years; this however is taken into account in most reputable suppliers calculations.

How did photovoltaics get its name?

First used in about 1890, the word has two parts: photo, a stem derived from the Greek phos, which means light, and volt, a measurement unit named for Alessandro Volta (1745-1827), a pioneer in the study of electricity. So, photovoltaics could literally be translated as light-electricity.