Ossila Solar Cell I-V Test System User Manual page 26

Solar Cell I-V Test System (Manual)
Figure 9.18. Resistor test device configurations (colours may vary).
9.11.1 Taking a Measurement
1. Plug in and switch on the system.
2. Allow at least 30 minutes for the system to warm up.
3. Place the test device in the device holder with the resistors facing upwards.
4. Start the Solar Cell I-V software and enter the settings in Figure 9.19.
I. These settings can be used with any current range except for the 20 μA range. For
this range the start and end voltages must be lowered to -2 V and 2 V respectively.
II. The 'Pixels to Measure' checkboxes should match the device configuration you
have. Ensure that only one pixel at a time is activated on the test board.
Figure 9.19. Measurement settings for the resistor test device.
5. Click the 'Measure' button.
6. The system should measure straight line resistor responses from -100 μA.cm
μA.cm (or -20 μA.cm
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7. To check the calibration of the system, use the I-V data to calculate the measured
resistance at -10 and 10 V (-2 and 2 V for the 20 μA current range).
I. Resistance can be calculated using: R = V / I
II. For the 200 mA current range the calculated resistance should be between 98 and
102 kΩ (within 2% of the resistor value).
III. For all other ranges the calculated resistance should be between 99 and 101 kΩ
(within 1% of the resistor value).
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to 20 μA.cm for the 20 μA current range) as shown in Figure 9.20.
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