The short-circuit current is the current through the solar cell when the voltage across the solar cell is zero (i.e., when the solar cell is short circuited). Usually written as I SC, the short-circuit current is shown on the IV curve below. IV curve of a solar cell showing the short-circuit current.
In organic solar cells, short-circuit current ( ISC), which is equal to the photocurrent when the voltage across solar cell is zero, is one of the key parameters of power conversion efficiency.
As discussed above, based on the flow of both majority and minority carriers, the short-circuit current in organic solar cell is mainly influenced by the temperature, free carrier generation rate, light intensity, donor and acceptor dopant concentration, and the free carrier concentration entering into the donor (acceptor) region.
The short-circuit current (I SC) is the current through the solar cell when the voltage across the solar cell is zero (i.e., when the solar cell is short circuited). Usually written as ISC, the short-circuit current is shown on the IV curve below. I is due to the generation and collection of light-generated carriers. For an ideal PV cell with
In a typical module, 36 cells are connected in series to produce a voltage sufficient to charge a 12V battery. The voltage from the PV module is determined by the number of solar cells and the current from the module depends primarily on the size of the solar cells.
Various levels of integration exist, such as on-site battery storage, in which the solar cell DC current can charge batteries directly (DC battery charging efficiency of ca. 100%). (7) For an efficient operation, both battery cell voltage and maximum power point of the solar cell as well as charging currents need to match.
OverviewWorking explanationPhotogeneration of charge carriersThe p–n junctionCharge carrier separationConnection to an external loadEquivalent circuit of a solar cellSee also
The theory of solar cells explains the process by which light energy in photons is converted into electric current when the photons strike a suitable semiconductor device. The theoretical studies are of practical use because they predict the fundamental limits of a solar cell, and give guidance on the phenomena that contribute to losses and solar cell efficiency.