Researchers at the Aalto University in Finland have proposed a new simplified method for testing perovskite and dye-sensitized solar cells.
The researchers explained that their fast low-threshold photographic methods can even detect slightly ageing sites in perovskite batteries, are more reliable than optical measurements, and are simpler than the more commonly used X-ray crystallographic inspection procedures. The sensitization of the color change of iodide and perovskite in the solar cell is used to judge the aging of the battery. The longer the battery is used, the longer the iodine ion will become transparent from bright yellow, and the perovskite will become yellow and darker. .
However, current battery aging test methods still have some drawbacks. More rigorous aging test methods are critical to prolonging battery life. The team has proposed several methods to extend the battery life.
Professor Kati Miettunen said: 'Understanding the mechanism of battery aging is very important. We managed to extend the life of solar cells by more than ten times by changing the structure of the battery and the electrolyte.'
Aalto University's previous research due to the small sample size and lack of detailed information on environmental conditions such as temperature, humidity, etc., most aging test of perovskite solar cells can not provide accurate data. The research team stated that a series of The meeting, in collaboration with other experts, establish clear criteria for aging testing. 'High quality, standardized testing will enhance investor confidence in the solar cell industry.'
