Characterization and Standardization
Characterization and Standardization
The VIPERLAB Characterization and Standardization team aims to strengthen and improve the quality of European research on perovskite cells. It focuses on finding the best performance measurement methods, aging protocols, encapsulation protocols and characterization methods.
Results and best practices are/will be shared with teams in charge of standardization and harmonization. This joint research is divided in several topics, and involves 11 partners.
- A first research group examines the measurement challenges in both perovskite single junctions and tandem cells, taking into account the origin of measurement instabilities. The goal is to develop a common approach and ensure results comparability. This is performed through round robins, i.e. cells exchanges between institutions.
- A second research group focuses on the aging protocols, with both outdoor and accelerated aging in dedicated climatic chambers. In order to extract reliable information, they incorporate the best measurement practices highlighted by the first group and can add valuable characterization. Special attention will be given to the impact of electrical bias and to light/dark cycling. Comparison between accelerated and outdoor aging may allow extracting accelerated aging factors and lifetime prediction in operation.
- A third group is dedicated to the encapsulation characterization, and aims to highlight the best practices to evaluate the encapsulation materials and/or processes. The partners in this group pool their measurement capabilities to obtain detailed information on the encapsulation materials properties, and their evolution over time. The best practices will be communicated to the aging group.
Lastly, HZB and CEA study the device degradation pathways under simulated operating conditions in a specific spectroscopic equipment. They aim to establish protocols that mimic standard testing procedures and improve device understanding.
This will require comparison with external tests, and finding of optimal test conditions.
Members : CEA – HZB – AIT – CENER – CSEM – – EPFL– FRAUNHOFER – FZJ – UNITOV – TNO - ENEA
