Textured Perovskite Tandem Solar Cells

Informazioni relative al progetto

TEXTA

ID dell’accordo di sovvenzione: 101033077

DOI

10.3030/101033077

Progetto chiuso

Data della firma CE 11 Marzo 2021

Data di avvio 1 Aprile 2021

Data di completamento 31 Marzo 2023

Finanziato da

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Costo totale

€ 191 149,44

Contributo UE

€ 191 149,44

Coordinato da

ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE
Switzerland

Periodic Reporting for period 1 - TEXTA (Textured Perovskite Tandem Solar Cells)

Periodo di rendicontazione: 2021-04-01 al 2023-03-31

Sintesi del contesto e degli obiettivi generali del progetto

Silicon solar cells are approaching their theoretical efficiency limits, yet we need to produce more solar energy in the next decades, ideally with less material usage but even higher efficiency, to ensure energy security with minimal ecological impact.
To this end tandem solar cells based on halide perovskites are an attractive option, but need to further improve efficiency and stability. Ideally, the solar cells furthermore feature texturization for optimal light harvesting.
Ths is the core objective of TEXTA, creating novel perovskite-based tandem solar cells with texturization. Their development is pivotal in transitioning to a net-zero society. Furthermore, simple and low-cost technologies such as the one presented provide the opportunity to rapidly develop new production capacities in Europe without worries about supply chains outside of Europe.

Lavoro eseguito dall’inizio del progetto fino alla fine del periodo coperto dalla relazione e principali risultati finora ottenuti

Overall, there were three main lines of work:

1. Optimizing the perovskite crystallization and adapting passivation methods to ensure peak performance of perovskite single junction solar cells, ideally atop of random light-trapping textures.
2. Implementation of the newly developed methods in perovskite-based tandem solar cells
3. Identifying means to upscale these cells

In all three objectives, significant progress was made, where the project progressed in the outlined order: improving the perovskite subcells via crystallization control and passivation => implementing them into tandem devices => upscaling the processes.
The results were disseminated in journal articles, conference presentations, public outreach activities and (social) media content.

Progressi oltre lo stato dell’arte e potenziale impatto previsto (incluso l’impatto socioeconomico e le implicazioni sociali più ampie del progetto fino ad ora)

The research resulted in a dual world record for perovskite-Si tandem solar cells in mid-2022, being the first to exceed 30% (https://actu.epfl.ch/news/new-world-records-perovskite-on-silicon-tandem-sol/) which provoked widespread scientific and non-scientific interest and communication (social media, TV, radio, newspapers). Several follow-up projects emerged based in part on these results, e.g. PEPPERONI (https://pepperoni-project.eu/) where our long-standing research partner (CSEM) is contributing to the development of a first perovskite-based tandem production pilot line, hence paving the way for a renaissance of a strong PV industry In Europe. Consequently, the results of TEXTA and the follow-up projects raised widespread interest among European company stakeholders and policymakers (several visits to the lab).

electron microscopy image, photograph, schematic of perovskite-based tandem cells