Photocurrent production basics of silicon solar cells

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Doc ID 019041 Rev 1

Figure 2.

Silicon solar cell equivalent diagram

The circuit model shown on Figure 2 gives the solar cell current (I(V)) versus the solar cell

output voltage (V)

Equation 1

Where:

T is the temperature in K

1.3

Main parameters of solar cells

1.3.1

voltage of the cell or panel is set to 0 V.

Equation 2

generated by the cell and is the maximum possible current generated by the cell for a fixed

illumination.

Solar cell equivalent diagram

V

I(V)

Rp

Rs

)

(V

I

I

I

I

Rp

d

L

+

+

=

()

p

s

s

0

L

R

)

)

R

)·

V

(

I

V

(

(

1

KT

R

)·

V

(

I

V

q

exp

I

I

)

V

(

I

+

−

⎥⎦

⎤

⎢⎣

⎡

−

+

−

=

IL = Isc + Isc ·

+ Io · (exp

Rs

Rp

q

KT

· Isc · Rs)

- 1)

(