A practical silicon-based solar cell is constructed from a n+p junction. a)  Explain briefly the meaning of the notation n+? b)  Draw a sketch showing the device structure of this solar cell. c)  This cell shows a photocurrent IL = 10.9 A under AM1.5G illumination. If the temperature is 25 oC, what is VOC? Assume that the saturated current IS = 1×10−9 A.

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Solar Cell

A solar cell, or photovoltaic cell, is a device that converts light into electricity directly through a photovoltaic effect, i.e., a physical and chemical event. It is a type of electromagnetic cell, defined as being used for its electrical properties, current, voltage, or resistance, which vary when exposed to light. Everyday cellular gadgets are usually the building blocks of photovoltaic modules, collectively known as solar panels. Single junction silicon solar cell can generate an open circuit of about 0.5 to 0.6 volts.