A universal co-solvent dilution strategy enables facile and cost-effective fabrication of perovskite photovoltaics
Abstract
Cost management and toxic waste generation are two key issues that must be addressed before the commercialization of perovskite optoelectronic devices. We report a groundbreaking strategy for eco-friendly and cost-effective fabrication of highly efficient perovskite solar cells. This strategy involves the usage of a high volatility co-solvent, which dilutes perovskite precursors to a lower concentration (1.4 M) solution. More than 70% of toxic waste and material cost can be reduced. Mechanistic insights reveal ultra-rapid evaporation of the co-solvent together with beneficial alteration of the precursor colloidal chemistry upon dilution with co-solvent, which in-situ studies and theoretical simulations confirm. The co-solvent tuned precursor colloidal properties also contribute to the enhancement of the stability of precursor solution, which extends its processing window thus minimizing the waste. This strategy is universally successful across different perovskite compositions, and scales from small devices to large-scale modules using industrial spin-coating, potentially easing the lab-to-fab translation of perovskite technologies.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 10, 2022
- Source ID
- 10.1038/s41467-021-27740-4
Entities
People
- Aldo Di Carlo
- Anders Hagfeldt
- Anurag Krishna
- Aram Amassian
- Boyu Guo
- Dan Ren
- Hong Zhang
- Kasra Darabi
- Linfeng Pan
- Luigi A Castriotta
- Mahmoud Zendehdel
- Masaud Hassan S. Almalki
- Michael Grätzel
- Narges Yaghoobi Nia
- Paramvir Ahlawat
- Ruipeng Li
- Sandy Sanchez Alonso
- Shaik M. Zakeeruddin
- Tzu-sen Su
- Ursula Röthlisberger
- Viacheslav Bolnykh
Organizations
- Horizon 2020
- Office of Naval Research
- Swiss National Science Foundation