{"title":"Slot-die coating of formamidinium-cesium mixed halide perovskites in ambient conditions with FAAc additive","authors":"Nischal Khakurel, Drew Amyx, Maggie Yihong Chen, Yoichi Miyahara, Wilhelmus J. Geerts","doi":"10.1557/s43579-024-00522-x","DOIUrl":null,"url":null,"abstract":"<p>Continuous pin-hole free FA<sub>0.78</sub>Cs<sub>0.22</sub>Pb(I<sub>0.85</sub>Br<sub>0.15</sub>)<sub>3</sub> films are deposited by gas-assisted slot-die printing under ambient conditions using DMF/DMSO based ink containing Formamdinium Acetate additive. Using a binary solvent mixture of DMF and DMSO is effective in eliminating the non-perovskite phase that occurs when DMF alone is used. Print-speed, gas flow rate and chuck temperature are optimized to realize homogeneous films with constant bandgap (1.63 eV) over large substrates (2″ × 4″). The perovskite films prepared using two solvents DMF and DMF: DMSO (9:1) were incorporated in single junction devices. The resulting devices show improved fill factor with improved power conversion efficiency.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\n","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":"216 1","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"MRS Communications","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1557/s43579-024-00522-x","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Continuous pin-hole free FA0.78Cs0.22Pb(I0.85Br0.15)3 films are deposited by gas-assisted slot-die printing under ambient conditions using DMF/DMSO based ink containing Formamdinium Acetate additive. Using a binary solvent mixture of DMF and DMSO is effective in eliminating the non-perovskite phase that occurs when DMF alone is used. Print-speed, gas flow rate and chuck temperature are optimized to realize homogeneous films with constant bandgap (1.63 eV) over large substrates (2″ × 4″). The perovskite films prepared using two solvents DMF and DMF: DMSO (9:1) were incorporated in single junction devices. The resulting devices show improved fill factor with improved power conversion efficiency.
期刊介绍：
MRS Communications is a full-color, high-impact journal focused on rapid publication of completed research with broad appeal to the materials community. MRS Communications offers a rapid but rigorous peer-review process and time to publication. Leveraging its access to the far-reaching technical expertise of MRS members and leading materials researchers from around the world, the journal boasts an experienced and highly respected board of principal editors and reviewers.
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