We are proud to announce that M.Sc. Noora Lamminen has successfully defended his doctoral dissertation titled “Multi-Site Engineering of Pnictogen-Based Perovskite-Inspired Materials for Photovoltaic Applications.” The public examination took place on 27th May, 2026, at Tampere University, Tampere, Finland.
In her doctoral dissertation, MSc (Tech) Noora Lamminen investigated how lead‑free, pnictogen‑based perovskite‑inspired materials can be engineered for efficient and stable indoor photovoltaics that harvest energy from indoor light. By tailoring the chemical composition, processing conditions, and device interfaces, she demonstrated record indoor power‑conversion efficiencies of up to 10%, the highest reported for this material class, together with markedly improved stability. These results are significant because they show that environmentally friendly alternatives to lead‑based perovskites can meet the power requirements of low‑power Internet‑of‑Things (IoT) sensors and smart electronics under everyday indoor lighting, reducing the need for frequent battery replacement.
The Opponent for the defense was Professor Dr. Alexander Colsmann from Karlsruhe Institute of Technology, Germany. Professor Paola Vivo from Tampere University served as the Custos.
The dissertation is available online.
We extend our heartfelt congratulations to Dr. Noora Lamminen on this significant academic achievement!