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Novel tandem, high efficiency photovoltaic technologies targeting low cost production with earth abundant materials

Perovskites are a new development with photovoltaics, offering high power conversion effi-ciency and low cost. In so-called "tandem perovskites", the perovskite cell is placed on top of a regular silicon solar cell. Through this, the power conversion efficiency limit of conventional silicon photovoltaics can be overcome, resulting in further reductions in electricity generation costs and resource consumption.
NEXUS aims to accelerate Europe’s transition to clean energy by development of perovskite-Si tandem photovoltaics. NEXUS follows a global eco-design approach based on efficiency, cost, sustainability, circularity and social aspects of the whole value chain. NEXUS will develop sta-ble, 2-terminal perovskite-silicon tandem solar cells with power conversion efficiencies >33% (modules >30%) and stabilities like state-of-the-art single junction Silicon PV modules.
NEXUS is a multi-disciplinary consortium with 12 partners from 9 European countries. Five industrial partners and seven Research & Technology organizations cover the whole value chain from research to end-users and markets.
FHNW leads the work package on resource efficiency and sustainability. The FHNW also con-ducts life-cycle assessments, develops recycling schemes, and ensures the safe deployment of tandem perovskites through outdoor leaching tests.

Key Figures

    Projectduration:2022– 2025
    Funding agency:
    This project is funded under the European Union's Horizon 2020 research and innovation programme. (GA Nr. 101075330). This work is supported by the State Secretariat for Education, Research and Innovation (SERI) under contract number 22.00314. The opinions and arguments expressed herein do not necessarily reflect the official views of the Swiss government.


    Dr. Markus Lenz
    Dr. Markus Lenz

    Arbeitsgruppenleiter und Dozent, Angewandte Kreislaufwirtschaft

    Telefon +41 61 228 56 86 (Direkt)


    Dirk Hengevoss
    Dirk Hengevoss

    Wissenschaftlicher Mitarbeiter

    Telefon +41 61 228 55 98 (Direkt)
    Prof. Dr. Christoph Hugi
    Prof. Dr. Christoph Hugi

    Institutsleiter a.i., Institut für Ecopreneurship

    Telefon +41 61 228 55 84 (Direkt)
    Victor Misev
    Victor Misev

    Wissenschaftlicher Assistent

    Telefon +41 61 228 60 48 (Direkt)
    Anika Sidler
    Anika Sidler


    Telefon +41 61 228 52 24 (Direkt)

    Institut für Ecopreneurship

    Fachhochschule Nordwestschweiz FHNW Hochschule für Life Sciences Institut für Ecopreneurship Hofackerstrasse 30 4132 Muttenz
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