Charge generation understanding in dilute non-fullerene organic solar cells (D-NOSCs)
Yuxuan Li a, Rui Zhang a, Huotian Zhang a, Feng Gao a
a Linköping University, Sweden, SE-581 83, Linköping, Sweden
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
London, United Kingdom, 2023 June 12th - 14th
Organizers: Tracey Clarke, James Durrant and Trystan Watson
Poster, Yuxuan Li, 276
Publication date: 30th March 2023

With the help of increasingly exquisite materials synthesis and improved understanding of device physics, non-fullerene organic solar cells developed rapidly and made a lot of progress in the recent years. These days the energy loss ( Voc loss) mechanism understanding is almost complete. However, when we try to use small offset systems to decrease the Voc loss and get better efficiency, there will be an expected lack of driving force for the charge splitting. Specially, in dilute systems, the 90% Y6, 10% PM6 device could still have a very good performance which might be a potential candidate for semitransparent windows, but in large amount of PM6 and small amount Y6, the device act bad. We are to understand the charge generation ( dissociation) in dilute non-fullerene organic solar cells, on the one hand help dilute devices develop, on the other hand using dilute systems might help us understand more in charge generation.

Here we choose different ratio of Y6 and PM6 devices, related the device performance with their CT and LE peaks varying in the temperature depending PL spectrum. To show the relationship between the blend D/A composition and the CT, LE energy level distribution tendency which could be highly corresponded to the charge generation process.

We use our own and third party cookies for analysing and measuring usage of our website to improve our services. If you continue browsing, we consider accepting its use. You can check our Cookies Policy in which you will also find how to configure your web browser for the use of cookies. More info