What is the working of solar cell?
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A solar cell is a sandwich of n-type silicon (blue) and p-type silicon (red). It generates electricity by using sunlight to make electrons hop across the junction between the different flavors of silicon: When sunlight shines on the cell, photons (light particles) bombard the upper surface.
What are the types of solar cell?
Solar cells can be divided into three broad types, crystalline silicon-based, thin-film solar cells, and a newer development that is a mixture of the other two.
How a solar cell is constructed and works?
All silicon crystalline solar cells are made using a very thin wafer of base silicon with the two main types being P-type and N-type. These are made when the silicon is ‘doped’ with specific chemical elements to create a positive (p-type) or negative (n-type) charge.
What are the three main types of solar cells?
Which metal is used in solar cell?
Silver. Silver is an excellent conductor of electric current and is used on the front and back of crystalline solar cells. NSW is a major producer of silver, particularly at Broken Hill, which has over 20,000 tonnes of the metal.
How pn junction works in solar cell?
Working Principle of Solar Cell. When light reaches the p-n junction, the light photons can easily enter in the junction, through very thin p-type layer. The light energy, in the form of photons, supplies sufficient energy to the junction to create a number of electron-hole pairs.
What is the structure of solar cell?
A solar cell consists of a layer of p-type silicon placed next to a layer of n-type silicon (Fig. 1). In the n-type layer, there is an excess of electrons, and in the p-type layer, there is an excess of positively charged holes (which are vacancies due to the lack of valence electrons).
What are 3 types of solar energy?
There are three primary technologies by which solar energy is harnessed: photovoltaics (PV), which directly convert light to electricity; concentrating solar power (CSP), which uses heat from the sun (thermal energy) to drive utility-scale, electric turbines; and solar heating and cooling (SHC) systems, which collect …
What is solar cell electrical model PV?
Solar Cell Electrical Model PV is modeled as a current source because it supplies a constant current over a wide range of voltages It has p-n junction diode that supplies a potential It has internal resistors that impede the flow of the electrons
What is the working principle of solar cell?
All the aspects presented in this chapter will be discussed in greater detail in the following chapters. The working principle of solar cells is based on the photovoltaic effect, i.e. the generation of a potential difference at the junction of two different materials in response to electromag- netic radiation.
What is a solar cell?
A solar cell (also known as a photovoltaic cell or PV cell) is defined as an electrical device that converts light energy into electrical energy through the photovoltaic effect. A solar cell is basically a p-n junction diode. Solar cells are a form of photoelectric cell, defined as a device whose electrical characteristics – such as current,
How do you model a solar cell?
An ideal solar cell may be modelled by a current source in parallel with a diode; in practice no solar cell is ideal, so a shunt resistance and a series resistance component are added to the model. The resulting equivalent circuit of a solar cell is shown on the left.