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e segregation in Mn 2 +-and Co 2 +-doped lead halide perovskites from 133 Cs and 1 H 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 Mn and Co has recently been reported to substantially enhance luminescence and stability of these materials. However, so far atomiclevel 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 Cs and H solid-state MAS NMR relaxation measurements we provide for the first time direct evidence that, consistent with current understanding, Mn is incorporated into the perovskite lattice of CsPbCl3 and CsPbBr3 and does not form clusters. We also show that, contrary to current conviction, Co is not incorporated into the perovskite lattice of MAPbI3. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://pubs.rsc.org/en/content/articlepdf/2019/ta/c8ta11457a?page=search |
| Alternate Webpage(s) | https://infoscience.epfl.ch/record/263918/files/Doping%20and%20phase%20segregation%20in%20Mn2+-%20and%20Co2+-doped%20lead%20halide%20perovskites%20from%20133Cs%20and%201H%20NMR%20relaxation%20enhancement%20.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
