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Iodide management in formamidinium-lead-halide–based perovskite layers for efficient solar cells
| Content Provider | Semantic Scholar |
|---|---|
| Author | Yang, Woon Seok Park, Byung-Wook Jung, Eui Hyuk Jeon, Nam Joong Kim, Young Chan Lee, Dong Uk Shin, Seong Sik Seo, Jangwon Noh, Jun Hong Seok, Sang Il |
| Copyright Year | 2017 |
| Abstract | The formation of a dense and uniform thin layer on the substrates is crucial for the fabrication of high-performance perovskite solar cells (PSCs) containing formamidinium with multiple cations and mixed halide anions. The concentration of defect states, which reduce a cell’s performance by decreasing the open-circuit voltage and short-circuit current density, needs to be as low as possible. We show that the introduction of additional iodide ions into the organic cation solution, which are used to form the perovskite layers through an intramolecular exchanging process, decreases the concentration of deep-level defects. The defect-engineered thin perovskite layers enable the fabrication of PSCs with a certified power conversion efficiency of 22.1% in small cells and 19.7% in 1-square-centimeter cells. |
| Starting Page | 1376 |
| Ending Page | 1379 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| PubMed reference number | 28663498 |
| Journal | Medline |
| Volume Number | 356 |
| Alternate Webpage(s) | https://d2ufo47lrtsv5s.cloudfront.net/content/sci/356/6345/1376.full.pdf |
| Alternate Webpage(s) | https://doi.org/10.1126/science.aan2301 |
| Journal | Science |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
