5) Equations for calculation:

1. PD load resistance:

;

where R_sh – shunt resistance , R_V = 2000 kΩ – voltmeter input resistance.

2. PD photocurrent:

;

where U –photovoltage, R_LOAD – PD load resistance.

3. Power generated on the load:

;

where I_PD - PD photocurrent; U - photovoltage.

4. PD efficiency:

.

where P - power generated on the load, P_LIGHT – LED light emission power.

6) Table of measurements

R_V = 2000 kΩ.

№	ILED, mА	PLIGHT, mW	Rsh, kΩ	RLOAD, kΩ	U, mV	IPD, μА	P, mW	η
1.	10		0,88
2.			1,28
3.			1,86
4.			3,26
5.			5,5
6.			7,97
7.			10
8.			99,99
9.	30		0,2
10.			0,37
11.			0,62
12.			0,88
13.			1,28
14.			1,86
15.			3,26
16.			7,97
17.			99,99

7) Quantities calculation:

V_OC1 = … V; I_SC­₁ = … μА; R_OPT1 = … kΩ;

V_OC2 = … V; I_SC­₂ = … μА; R_OPT2 = … kΩ;

8) Graphs:

8.1 Light CVCs of photodiode	8.2 Efficiency vs photocurrent

9) Final results:

V_OC1 = … V; I_SC­₁ = … μА; R_OPT1 = … kΩ;

V_OC2 = … V; I_SC­₂ = … μА; R_OPT2 = … kΩ;

10) Conclusions:

11) Work done by: Work checked by: