in a paragraph or more, can some tell me is solar cell and how to measure a sola
ID: 2292208 • Letter: I
Question
in a paragraph or more, can some tell me is solar cell and how to measure a solar cell, and what is the information in the picture above mean
IMG 0012.JPG Repeat Timer (ms) 1 Linear Stair Run Repeated Sweeps Bias V 0.000 Source V Range Compliance I Start V Stop 2.70 Points 30 Step V Swp Delay(m 0.000 1000E-1 0.00 Meas I Range Auto Auto 0.0931034 About Data Graph o Range Y-max 016 min 0.09 Plot 0 1100E-1 1000E-1 9.000E-2- 8.000E-2 7.000E-2 6.000E-2 5.000E-2 4.000E-2- 3.000E-2 2.000E-2 1.000E-2 0.000E 0 -1.000E-21 0.00 0.25 0.50 0.75 100 1.25 150 1.75 2.00 2.25 2.50 2.75Explanation / Answer
Above three pic are VI characteristics of a solar cell lamp. The negative current is just Injection of charge at the contacts leads to excess minority carriers in forward bias. In case of pn Junction diod-Each time an electron recombines at the P-side an electron comes from the Val.Band of the P-side flows to the external circuit (J-dark-Recombination current).So whenever a recombination takes place inside the diode an electron is sent to the external circuit.
In case of solar cell-Under light, electron generated at the thick base-P to n due to illumination. Now the current flows in the wrong (opposite) direction.This results in shift of the IVcurve . in all the case its the minority carrier results current.
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