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Doping and phase segregation in Mn2+- and Co2+-doped lead halide perovskites from 133Cs and 1H NMR relaxation enhancement
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kubicki, Dominik Józef Prochowicz, Daniel Pinon, Arthur C. Stevanato, Gabriele Hofstetter, Albert Zakeeruddin, Shaik Mohammed Graetzel, Michael Emsley, Lyndon |
| Copyright Year | 2019 |
| Abstract | Lead halide perovskites belong to a broad class of compounds with appealing optoelectronic and photovoltaic properties. Doping with transition metal ions such as Mn2+ and Co2+ has recently been reported to substantially enhance luminescence and stability of these materials. However, so far atomic-level evidence for incorporation of the dopants into perovskite phases has been missing. Here, we introduce a general and straightforward method for confirming the substitutional doping of bulk perovskite phases with paramagnetic dopants. Using 133Cs and 1H solid-state MAS NMR relaxation measurements we provide for the first time direct evidence that, consistent with current understanding, Mn2+ is incorporated into the perovskite lattice of CsPbCl3 and CsPbBr3 and does not form clusters. We also show that, contrary to current conviction, Co2+ is not incorporated into the perovskite lattice of MAPbI3. |
| Starting Page | 2326 |
| Ending Page | 2333 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/c8ta11457a |
| Alternate Webpage(s) | https://pubs.rsc.org/en/content/articlepdf/2019/ta/c8ta11457a?page=search |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c8/ta/c8ta11457a/c8ta11457a1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/c8ta11457a |
| Volume Number | 7 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
