What is the operating principle of a solar cell?

Conceptually, the operating principle of a solar cell can be summarized as follows. Sunlight is absorbed in a material in which electrons can have two energy levels, one low and one high. When light is absorbed, electrons transit from the low-energy level to the high-energy level.

What is the working principle of a photovoltaic cell?

Working principle of Photovoltaic Cell is similar to that of a diode. In PV cell, when light whose energy (hv) is greater than the band gap of the semiconductor used, the light get trapped and used to produce current.

Are solar cells eco-friendly?

They are a sustainable and eco-friendly energy source that is becoming increasingly popular today. A solar cell is made up of semiconductor materials, usually silicon, and functions by absorbing solar photons and jarring the semiconductor material’s electrons loose to produce an electric current.

How efficient are organic solar cells?

The efficiency of organic solar cells is catching up with traditional solar cells and they can convert about 20 percent of the sun's rays into electricity. The high efficiency is the result of several years of intensive materials research and studies of the interaction between the molecules in the material, the so-called morphology.

What is solar cell efficiency?

It is a key performance that indicates how effectively the solar cell can convert sunlight into electricity. Solar cell efficiency is typically expressed as a percentage and is calculated by dividing the electrical power output of the solar cell by the total solar power input.

How do solar cells work?

Working Principle: The working of solar cells involves light photons creating electron-hole pairs at the p-n junction, generating a voltage capable of driving a current across a connected load.