GoKawiilPreventing the detachment of self-assembled molecules (SAMs) and enhancing their passivation effect on perovskites are critical challenges for improving the performance and stability of perovskite solar cells (PSCs)1–3. Electrodeposited SAMs provide a route to improve coverage uniformity and anchoring robustness on conductive substrates beyond the limitations of conventional solution processing. Here, we use potential-cycled electrodeposition to promote molecular rearrangement and re-anchoring of SAMs, resulting in a uniform and dense layer on an indium tin oxide (ITO) substrate with enhanced anchoring capability. Building on this base SAM, functional units are grown via electrochemical oxidative coupling to form tailored coupled carbazole phosphonic SAMs, yielding power conversion efficiencies of 26.8% for lab-scale solar cells and 21.3% for solar modules (65 cm2).
Electrodeposited self-assembled molecules for perovskite photovoltaics
Why This Matters
This research highlights a novel electrodeposition method to enhance the stability and efficiency of perovskite solar cells by creating more robust and uniform self-assembled molecule layers. Improved SAM anchoring and passivation directly contribute to higher power conversion efficiencies and longer-lasting devices, which are crucial for advancing commercial perovskite photovoltaics. These developments could significantly impact the solar industry by enabling more durable and cost-effective solar energy solutions for consumers.
Key Takeaways
- Electrodeposited SAMs improve coverage and stability on conductive substrates.
- Potential-cycled electrodeposition promotes better molecular rearrangement and anchoring.
- Achieved high efficiencies of up to 26.8% in lab-scale perovskite solar cells.
Explore topics:
perovskite solar cells
electrodeposited sams
indium tin oxide
carbazole phosphonic
power conversion efficiency
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