tandemPV Stability Contest
Dear tandemPV Workshop participants,
After the success of the first edition of the tandemPV Stability Contest, we are pleased to announce the 2025 edition of the Emerging PV Stability Contest to the PV community. New efficiency records have been achieved this year with perovskite/silicon tandem devices. As a result, it is becoming increasingly evident that in addition to efficiency and upscaling potential, the reliability and long-term stability of these devices are of critical relevance. To further inspire the research community, we are reintroducing this contest, which evaluates not only efficiency but also device area and endurance under stringent stress tests.
It is now clear that stability under humidity exposure or damp-heat conditions can be achieved through a combination of optimized device properties and excellent encapsulation. However, perovskite devices face their next challenge under realistic operating conditions involving temperature and illumination. While these parameters do not encompass the full range of stress and reliability tests, they represent a critical milestone before moving on to more comprehensive stability, reliability, and outdoor testing.
The contest aims to identify both state-of-the-art tandem and single-junction devices based on their endurance against performance degradation under one-sun illumination at a constant temperature of up to 85 °C. Due to the success, contest winners will be announced twice a year: at the tandemPV workshop (May 13th-15th, 2025 Hasselt, Belgium).
While the contest is not a scientifically exhaustive method, its purpose is to draw attention to a critical degradation mechanism in perovskite devices and in general new emerging materials. Efficiency is no longer the sole determining parameter of a new material success.
We are once again employing a point system:
- 50% of the points are awarded for stability
- 25% for efficiency, and
- 25% for device area.
This means a stable device with a large area and acceptable efficiency will outperform one that achieves the highest efficiency alone.
We encourage you to submit your most stable device for consideration in the Emerging PV Stability Contest using this link:
Looking forward to meeting you at tandemPV first and ISOS conference.
The Emerging PV Stability Contest steering committee,
Gianluca Coletti (UNSW),
Erkan Aydin (LMU Munich),
Daniel Tune (ISC),
Valerio Zardetto (TNO),
Stefan Glunz (Fraunhofer ISE),
Solenn Berson (CEA),
Monica Lira-Cantu (ICN2)
Aranzazu Aguirre (imec),
Mark Khenkin (HZB)