Photo: Noora Lamminen
In his doctoral dissertation, Paavo Mäkinen explored how engineering the interface between the light-absorbing perovskite layer and the hole transport material can improve solar cell stability. The research showed that inexpensive organic materials with well‑designed molecular interactions can significantly extend device lifetimes while retaining good performance, without relying on degradation‑inducing additive mixtures. These findings are important because the limited lifetime of perovskite solar cells remains a major obstacle to their commercialization. The results benefit research and, in the long term, the energy industry by providing practical design principles for developing more durable, affordable, and market‑ready renewable‑energy technologies.
The doctoral dissertation of MSc (Tech) Paavo Mäkinen in the field of Chemistry titled Interfacial Engineering of Organic Hole Transport Materials in Perovskite Solar Cells for Enhanced Stability will be publicly examined at the Faculty of Engineering and Natural Sciences at Tampere University on Friday 22 May 2026.
The Opponent will be Doctor Silvia Colella from the National Research Council of Italy, Institute of Nanotechnology (CNR-NANOTEC) in Bari, Italy. The Custos will be Professor Paola Vivo from the Faculty of Engineering and Natural Sciences, Tampere University.