Research

Research activities HSC team

Our ongoing activities focus on the design, synthesis, and characterization of functional PV building blocks and their integration in hybrid 3rd generation solar cells, such as perovskite solar cells (PSCs) and organic photovoltaics (OPVs).

Novel organic and inorganic semiconductors are designed with the support of molecular modeling and machine learning techniques. The optimization of the PV activity is achieved by deep understanding of the materials structure-property relationship through characterization of the photoactive materials and interfaces.

Our multidisciplinary activities dealing with chemistry, photophysics, materials science, and device engineering are supported by state-of-the-art facilities, including clean rooms, a brand new glove box, and class AAA solar simulator.

We belong to the Chemistry and Advanced Materials (CAM) cluster at the ENS faculty

We are part of PREIN Flagship!

Research goals:

  • Lead-free bulk perovskites and perovskite nanocrystals
  • Low-cost and eco-friendly hole/electron transporters for PSCs and OPVs
  • Waterproof perovskite solar cells (PSCs)

How do we reach our goals?

1. Design and synthesis

  • Novel functional organic and inorganic semiconductors designed with support of molecular modeling and machine learning techniques
  • Synthesis of novel perovskite materials, with particular emphasysis on replacement of toxic lead

2. Photovoltaic devices

  • Hybrid third-generation solar cells with a special focus on PSCs and organic solar cells (OPVs)

3. Characterization

  • Structure-property relationship; photophysics

Ongoing projects

1. ASPIRE (Jane & Aatos Erkko foundation), 2018-2020 

Partners: Åbo Akademi (ÅA), Tampere University (TAU), Aalto University, (Aalto). PIs: Prof. R. Österbacka (Physics, ÅÅ), Dr. J-H. Smått (Physical Chemistry, ÅA), Prof. P. Lund (Aalto), Dr. P. Vivo (TAU).

Jane and Aatos Erkko Foundation has granted 997 000 € to a Finnish consortium for research in and development of tomorrow’s perovskite solar cells. The research project is titled “A novel integrated approach for highly reproducible and stable perovskite solar cells (ASPIRE)” and is coordinated by Prof. R. Österbacka from ÅA. The project is based on a novel fabrication method for scalable perovskite solar cells. The novel method enables an integrated approach to simultaneously clarify the selectivity of the contacts, the crystallization of the perovskite material, and the development of new environmentally-friendly transport materials.

2. SolarWAVE (Business Finland, Forschungszentrum Jülich), 2018-2021

Business Finland and Forschungszentrum Jülich GmbH have granted a bilateral project between TUT and Helmholtz Zentrum Berlin (HZB) for research on PSCs. The project titled ‘Waterproof perovskite solar cells’ (SolarWAVE) is coordinated and managed by Dr. P. Vivo (TUT) and Prof. A. Abate (HZB). From Finnish side, the key industrial partner of SolarWAVE is Confidex Oy. Moreover, the interest in SolarWAVE by Ruukki Oy and KONE Oy resulted in their steering and financial support for this research.

SolarWAVE aims to demonstrate a disruptive boost in PSCs stability, by proposing a new generation of printable water-stable PSCs with 10+ years lifetime. This will be obtained by passivating perovskites surface with novel organic and inorganic materials, and relying on the supramolecular halogen-bonding concept. The final goal will be to integrate the ultra-stable PSCs in flexible smart tags for communication and data processing in the IoT domains, thus having chance to dramatically change the way how IoT is implemented around us.

3. LightningSense (Academy of Finland), 2018-2021

Academy of Finland has granted close to 1 million euros to the consortium headed by Prof. D. Lupo (Laboratory for Future Electronics). Other members of the consortium are Prof. A. Priimägi (PI), Dr. P. Vivo (co-PI), Prof. K. Halonen (PI, Aalto University).

The project titled ‘Energy autonomous wireless sensor systems powered by printed light energy harvesting and storage’ (LightningSense) aims at studying the individual components of future IoE systems: enhanced OPVs/PSCs for indoor light harvesting, materials and architectures for printed supercapacitors leading to lower series resistance and self-discharge, and ultra-low power Si based circuitry for sensing, data processing, and wireless communication. Final goal is also to integrate these components together into a flexible, lightweight, compact, energy autonomous wireless IoT sensor.