Both the fingers and the busbars are electrical conductors. The fingers, or finger-like contacts, are thin, metallic lines that collect and deliver energy from the solar cell to the busbars.
What is the role of metal contact in solar cell?
Currently, there are many approaches for producing photovoltaic cells and thus many types of metallic contacts allowing current to flow from the cell to the external electric circuit where the cell works. The most popular and still the most commonly produced type of cell is a cell based on crystalline silicon.
What is contact resistance in solar cell?
Contact resistance losses occur at the interface between the silicon solar cell and the metal contact. To keep top contact losses low, the top N+ layer must be as heavily doped as possible. Points of contact resistance losses at the interface between grid lines and semiconductor. …
What is the function of solar cell?
A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.
What is front contact solar cell?
Fluorine-doped tin oxide (FTO) with high work function (5.45 eV) has been used as the front contact to the proposed solar cell. Zinc (Zn) metal which has a work function of 4.3 eV has been used as the back contact of the proposed model.
What is the structure of a 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 is the efficiency of a solar cell?
For solar photovoltaic (PV) cells, this means the ratio of useful electrical energy they produce to the amount of solar energy incident on the cell under standardized testing conditions. Although some experimental solar cells have achieved efficiencies of close to 50%, most commercial cells are below 30%.
What is the symbol of solar cell?
The symbol is shown below. As shown in the given diagram the Solar cell is like an ordinary diode. It consist of silicon, germanium PN junction with a glass windows on the top surface layer of P-Type, the P-Type material is made very thin and wide so that the incident light photon may easily reach to PN junction.
What is solar cell short answer?
Solar cell, also called photovoltaic cell, any device that directly converts the energy of light into electrical energy through the photovoltaic effect.
What are the key components of a solar cell?
The four major components of a solar energy system are the panels, inverter(s), racking and solar battery storage unit(s) (if desired). Solar panels are the most visible element of your system, which is why you’re likely the most familiar with it. They are, in essence, the “face” of solar.
What is PERC technology in solar?
PERC stands for “passivated emitter and rear contact” or “rear cell”. Solar panels built with PERC cells have an additional layer on the back of the traditional solar cells. This additional layer allows more sunlight to be captured and turned into electricity, making PERC cells more efficient than traditional cells.
WHAT IS HIT solar cell?
A HIT solar cell is composed of a mono thin crystalline silicon wafer surrounded by ultra-thin amorphous silicon layers. The acronym HIT stands for “heterojunction with intrinsic thin layer”.