Series resistance of amorphous silicon solar cells, how to calculate parallel resistance

The series resistance of amorphous silicon solar cells is directly added

The parallel resistance of two amorphous silicon solar cells is 1/2 of one, which is half the resistance of one

The parallel resistance of 4 amorphous silicon solar cells is 1/4 of one

n amorphous The parallel resistance of silicon solar cells is 1/n

The series resistance of amorphous silicon solar cells is too large and the parallel resistance is too small?

The internal resistance of the battery. is r=

"2.0V, 0.04W" rated current I1 of electrical appliances=

Suppose a total of n such batteries are required.

Then nE=I1?nr+U,

Substitute the solution and get n=8

Answer: 8 of these solar cells are needed to make electrical appliances work correctly. .

A 5W solar panel, 10K ohm resistor was connected to the circuit, and it was found that the resistor was blown? what happened? Is it because the resistor power setting is too small?

The series resistance of amorphous silicon solar cells is too large and the parallel resistance is too small. Why?

The series resistance is large, the parallel resistance is small and the resistance parallele is weak. Open circuit voltage is normal. This may be due to the intermediate manufacturing process of the panel. There is pollution;

The parallel resistance is low, the possible reason is that there is a problem with the gas purity and the panel edge insulation is not good;

The series resistance is large,The possible cause is a problem with the back electrode, such as exposure to oxidation in air or excessive burning during rolling.

It is recommended to check each section of the entire line one by one.

What are the main sources of resistance when solar cell devices are operating

Determine first the output voltage of your solar panel. Generally, the output is 17-18V DC, 10K resistance and 1000V output voltage. 100MA current. This resistor The power consumption above is 100W, it would be weird if itdon't burn! To charge a 3.6V battery, it is best to use 7812 plus 7805 to produce 5V to charge the battery Sunlight.

The operating principle of solar cells is based on the photovoltaic effect of the PN junction of the semiconductor. The so-called photovoltaic effect is an effect in which when an object is exposed to light, the state of charge distribution in the object changes to generate an electromotive force and a current. When sunlight or other light irradiates the PN junction of a semiconductor, a voltage appears on both sides of the PN junction, called photovoltage.

The photogenerated voltage from the battery is consumed by the series resistance, causing a drop in the output voltage. The parallel resistance mainly comes from the leakage of the battery PN junction, including the drain electrode inside the PN junction (crystal defectsand external doped deposits) and the leakage current at the edge of the junction.