A prenucleation strategy for ambient fabrication of perovskite solar cells with high device performance uniformity
Open Access
- 21 February 2020
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Communications
- Vol. 11 (1), 1-11
- https://doi.org/10.1038/s41467-020-14715-0
Abstract
Humidity is known to be inimical to the halide perovskites and thus typically avoided during fabrication. The poor fundamental understanding of chemical interactions between water and the precursors hampers the further development of perovskite fabrication in ambient atmosphere. Here, we disclose a key finding that the ambient water could promote the formation of lead complexes, which when uncontrolled would make their way into large intermediate fibrillar crystallites and thus discontinuous perovskite films unfavorable for photovoltaics among others. To counter this effect, a prenucleation strategy is proposed, which embodies the controlled burst of profuse intermediate nuclei. Consequently, we are able to obtain a compact and uniform perovskite layer, which affords high efficiency perovskite solar cells. More excitingly, the solar cells show high performance uniformity, demonstrating the distinctive advantages of our prenucleation strategy. This work sheds light on developing reliable and cost-effective fabrication methods for industrial production of perovskite solar cells.Keywords
Funding Information
- National Natural Science Foundation of China (51961165105)
This publication has 30 references indexed in Scilit:
- Stabilizing halide perovskite surfaces for solar cell operation with wide-bandgap lead oxysaltsScience, 2019
- Surface passivation of perovskite film for efficient solar cellsNature Photonics, 2019
- Enhanced photovoltage for inverted planar heterojunction perovskite solar cellsScience, 2018
- Efficient and stable solution-processed planar perovskite solar cells via contact passivationScience, 2017
- Unveiling a Key Intermediate in Solvent Vapor Postannealing to Enlarge Crystalline Domains of Organometal Halide Perovskite FilmsAdvanced Functional Materials, 2017
- Perovskite-perovskite tandem photovoltaics with optimized band gapsScience, 2016
- Incorporation of rubidium cations into perovskite solar cells improves photovoltaic performanceScience, 2016
- Efficient and stable large-area perovskite solar cells with inorganic charge extraction layersScience, 2015
- All-solid-state hybrid solar cells based on a new organometal halide perovskite sensitizer and one-dimensional TiO2 nanowire arraysNanoscale, 2013
- Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9%Scientific Reports, 2012