AI Article Synopsis
- Metal halide perovskite solar cells (PSCs) have great potential for converting light into electricity, but defects at grain boundaries limit their efficiency and stability.
- A new post-treatment method using 2-aminoterephthalic acid enhances PSC performance, achieving a power conversion efficiency of 21.09% and better stability.
- The acid works by preventing ion migration and reducing defects at grain boundaries, offering a promising approach for improving PSC technology.
Article Abstract
Metal halide perovskite solar cells (PSCs), with their exceptional properties, show promise as photoelectric converters. However, defects in the perovskite layer, particularly at the grain boundaries (GBs), seriously restrict the performance and stability of PSCs. Now, a simple post-treatment procedure involves applying 2-aminoterephthalic acid to the perovskite to produce efficient and stable PSCs. By optimizing the post-treatment conditions, we created a device that achieved a remarkable power conversion efficiency (PCE) of 21.09 % and demonstrated improved stability. This improvement was attributed to the fact that the 2-aminoterephthalic acid acted as a cross-linking agent that inhibited the migration of ions and passivated the trap states at GBs. These findings provide a potential strategy for designing efficient and stable PSCs regarding the aspects of defect passivation and crystal growth.
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| http://dx.doi.org/10.1002/anie.201915422 | DOI Listing |
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