How to switch your solar cells
Before you switch your solar cells, please watch our instruction video carefully. When preparing for and when switching, please take care and do not touch the free ends of the cords and avoid any contact between yourself and any metallic parts in the setup.
You will need a power supply and three electrical cords arranged as shown to the left. The procedure is as follows:
- Connect the positive pole of the power supply to the negative terminal of the solar cell via cord A.
- Connect cord B to the power supply’s negative pole while leaving the other end of the cord free/unconnected.
- Connect cord C to the positive terminal of the solar cell while leaving the other end of the cord free/unconnected
- Set the power supply to the required switching power for you specific solar cell.
- Briefly connect the free end of cord B and C in an instant stroke – see video - and by this create a short electrical pulse through the solar cell.
Your solar cell is now switched!
How to find the right switching power
The switching power depends on your device; the size, the stack, the thickness and the materials used. The right power is found by trial and error. The general advice is to start “gently”, i.e. by applying a low switching power. If the switching is not completed at this low power, the device can be switched again, while “overdoing” the switching will result in burning of the device. Check the result of the switching by IV characterization. When the optimum power is found, stick to this as the best performance is achieved for cells that are fully switched in one single pulse.
We apply a voltage in the range 20-30 V and a current in the range 50-100 mA per cm2 active area. These settings are indicative and are based on experiences with cells produced in our laboratory.