What are the criteria for the material to be used in solar cell?
Ideal semiconducting material for DSC application must possess the following properties:(i)wide band gap,(ii)high electron injection rate,(iii)low cost,(iv)high carrier concentration,(v)low static dielectric constant,(vi)high electron mobility.
What should be the band gap of the semiconductor to be used as solar cell?
Physics of Silicon Solar Cells
An ideal solar cell has a direct band gap of 1.4 eV to absorb the maximum number of photons from the sun’s radiation. Silicon, on the other hand, has an indirect band gap of 1.1 eV.
What is a band gap in a solar cell?
The band gap is the minimum amount of energy required for an electron to break free of its bound state. When the band gap energy is met, the electron is excited into a free state, and can therefore participate in conduction.
How much voltage does a single solar cell produce Mcq?
The common single-junction silicon solar cell can produce a maximum open-circuit voltage of approximately 0.5 – 0.6 V.
Is higher or lower band gap better?
A low band gap implies higher intrinsic conduction, and a high band gap implies a larger possible photon energy associated with a transition across the gap in light emitting diodes.
What are the materials used for preparing the 4 junction solar cells and why?
Multi-junction cells have materials tuned to specific wavelengths that absorb different solar wavelengths, thus maximizing how much sunlight it harvests. … The four material junctions are: gallium indium phosphide, a gallium arsenide, and two of gallium indium arsenide.
Why silicon is used in solar cell?
Silicon is one of the optimum semiconductors that is used for solar cell production because of its superior electronic properties, optical properties, thermal properties and mechanical as well as environmental properties. In addition to its availability, manufactureability, and cost.
What is a BOS component?
The balance of system (BOS) encompasses all components of a photovoltaic system other than the photovoltaic panels. This includes wiring, switches, a mounting system, one or many solar inverters, a battery bank and battery charger. … Land is sometimes included as part of the BOS as well.
Which has greatest energy gap?
This means that the electrons are readily available for conduction in superconductors. Therefore, by comparing the energy gaps of all the four insulators have a maximum energy band gap. Therefore Option (C) is the correct answer.