Photo: Arttu Ruusiala
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 doctoral dissertation of MSc (Tech) Noora Lamminen in the field of Chemistry titled Multi-Site Engineering of Pnictogen-Based Perovskite-Inspired Materials for Photovoltaic Applications will be publicly examined at the Faculty of Engineering and Natural Sciences at Tampere University on 27 May 2026.
The Opponent will be Professor Doctor Alexander Colsmann from Karlsruhe Institute of Technology, Germany. The Custos will be Professor Paola Vivo from the Faculty of Engineering and Natural Sciences, Tampere University.