PerovSAMs · Molecular glues for perovskite materials
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2018-01-01 → 2020-02-25
- EU contribution
- €170,122
- Participants
- 1
- Scheme
- MSCA-IF-EF-ST
Lines connect the coordinator with its partners.
Results in brief
Molecular glues for perovskite materials
Halide perovskites represent a broad family of materials with high potential for solar energy production (photovoltaics) as well as high-efficiency lighting applications (light-emitting diodes, LEDs). As such, the development of these materials could mean a major impulse for a more sustainable future based on renewable electricity sources and low-consumption devices. This project is encompassed within the global effort to boost the development of emerging halide perovskite technology. In particular, PerovSAMs has focussed on developing different strategies to overcome some of the bottlenecks that still prevent the widespread use of halide perovskites. First, we have worked on enhancing the stability of these materials by coating them with ultrathin layers (self-assembled monolayers) of different moisture-resistant organic molecules. Second, we have developed low-toxicity alternatives to the most commonly used lead-based perovskites. Furthermore, these low-toxicity alternatives have been synthesized through green chemistry solvent-free approaches. Third, we have worked on understading in-depth the fundamental structural and optoelectronic properties of the so-formed materials. Fourth, we have implemented these materials in high efficiency devices: in particular a single-junction solar cell with power conversion efficiency approaching 20% and a red-emitting LED with external quantum efficiency exceeding 3%.
Data: CORDIS, © European Union
Project objective
This project aims at optimizing the interface between halide perovskites and different semiconductors through the use of self-assembled monolayers (SAMs). Such interface engineering will be applied to perovskite solar cells where SAMs will play the role of “molecular glues” between the active perovskite layer and charge transport layers (n- and p-type metal oxides as well as organic semiconductors). Through the grafting and self-assembly of short bifunctional molecules, PerovSAMs will ensure a smooth and close contact at the interfaces, favouring charge transfer in the cell, thus minimizing losses and enhancing the power conversion efficiency (PCE). Furthermore, this versatile methodology will also be applied to perovskite nanocrystals (NCs). Surface functionalization of the NCs with SAMs will allow the formation of a perovskite shell with a different chemical composition creating core-shell quantum dots with superior photovoltaic properties, boosting the incipient field of perovskite NC-based solar cells.
Original text from CORDIS.
Participants
- UNIVERSITAT DE VALENCIA · ValenciaCoordinatorSpain
Links
Data: CORDIS, © European Union