Outdoor operational stability of perovskite solar cells
We have built two identical experimental outdoor systems to monitor our lab-made perovskite solar cells (PSCs) under different and real environmental conditions. The system consists of an angled stand for eight solar cells, a broad-spectrum pyranometer with a DIN EN 60068-2-9 certified calibration, and sensors for local temperature and relative humidity measurements, as shown in the Figure below. On a subholder coupled in the same plane as the sample holder, a thermocouple directly measures the temperature at the substrate used for the solar cells, and a spectrometer connected via an optical fiber with a cosine corrector measures the solar spectrum passing through it. One system is installed at Lac-de-Toules, near the Grand-St-Bernard pass in Switzerland, and the second is installed outside the Institute of Materials Sciences at the University of Valencia, Spain. The stand is positioned at the optimal tilt angle for each location, with a wired control system to monitor the devices via a sensor interface. In turn, a remote control of the system is used for data acquisition. The objective of the project is to study how different environmental conditions affect the performance and operational stability of encapsulated PSCs.
Contact person : Dr. Sandy Sanchez-Alonso “[email protected]“
[The system is in beta testing, and new cells with higher performance will be installed next spring]
Angled stand with sample holder and sensor interface