English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Methylammonium lead triiodide (MAPbI3) perovskite solar cells have gained significant attention with an\udimpressive certified power conversion efficiency of 22.1%. Suppression of recombination at the interface\udand grain boundaries is critical to achieve high performance perovskite solar cells (PSCs). Here, we report\uda simple method to improve the performance of PSCs by incorporating a lead chloride (PbCl2) material into\udthe MAPbI3 perovskite precursor through a Lewis acid–base adduct. The optimal concentration of PbCl2\udthat helps increase the grain size of MAPbI3 with introduction of the ideal amount secondary phases (lead\udiodide and methylammonium lead tri-chloride) is 2.5% (molar ratio, relative to lead iodide). Examination by\udsteady-state photoluminescence and time-resolved photoluminescence has shown that devices based on\udMAPbI3-2.5% of PbCl2 facilitated longer charge carrier lifetime and electron–hole collection efficiency\udwhich is ascribed to reduced defects and concurrent improved material crystallinity. Electrochemical\udimpedance spectra (EIS) of the corresponding PSCs have revealed that, compared to the pristine MAPbI3\udperovskite film, the 2.5% PbCl2-additive increased the recombination resistance of the PSCs by 2.4-fold.\udMeanwhile, measurement of the surface potential of the perovskite films has indicated that the PbCl2-\udadditive modifies the electronic properties of the film, shifting the fermi-level of the MAPbI3 film by 90\udmeV, leading to a more favourable energetic band matching for charge transfer. As a result, the\udperformance of PSCs is enhanced from an average efficiency of 16.5% to an average efficiency of 18.1%\udwith maximum efficiency reaching 19% due to the significantly improved fill-facto

journal of materials chemistry. a

Enhanced perovskite electronic properties via a modified lead(<scp>ii</scp>) chloride Lewis acid–base adduct and their effect in high-efficiency perovskite solar cells

Enhanced perovskite electronic properties via a modified lead(ii) chloride Lewis acid–base adduct and their effect in high-efficiency perovskite solar cells