Question

What is the current in A, from a PV cell if dark saturation current, I₀(I_nsat) =  1.000x10^-10A, light generated current, I_L=  0.500 A, ideality factor, n = 1, temperature, T = 300 K, and voltage, V =  0.500 V ? Express the result with 3 significant figures, include zero between the decimal point and do not write in the unit (it is already included in the question).

Answer 1

CONCEPT:

IN THE ABOVE FIGURES , 1ST FIGURE TELLS YOU ABOUT BASIC CIRCUIT OF ANY PV CELL HAVING A PHOTODIODE RECIEVING RAYS OF SUN AND POWERING UP THE LOAD AT ITS OUTPUT .

2ND FIGURE IS EXPANDED MODEL OF PV CELL HAVING A CONSTANT CURRENT SOURCE I_L WHICH SIGNIFIES ABOUT LIGHT GENERATED CURRENT , ALSO A DIODE IS IN PARALLEL CARRYING I_D DIODE CURRENT .

NOW , BY KCL AT NODE A ,

I= ( I_D - I_L )    // CURRENT FROM PV CELL(AT OUTPUT)

Where,    I= CURRENT DRAWN FROM PV CELL

   I_L= PHOTOCURRENT OR LIGHT GENRATED CURRENT

I_D = DIODE CURRENT = I₀ [e ^{(qV / nKb T)} - 1)

where further, I₀ = DARK SATURATION CURRENT

q = electric charge unit = 1.602 * 10^-19 C

V = voltage

k_b = boltzman constant = 1.381 * 10^-23 J/K

T = temprature in Kelvin

n = ideality factor

NOW COMING TO QUESTION SOLUTION ,