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Tracking the dimensional conversion process of semiconducting lead bromide perovskites by mass spectroscopy, powder X-ray diffraction, microcalorimetry and crystallography.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hu, Yue-Qiao Hui, Hong-Yan Wen, Hong-Qiang Wang, Yanyan Yang, De-Suo Feng, Guo-Dong |
| Copyright Year | 2019 |
| Abstract | The structural information of a material in both the solid state and solution state is essential to the in-depth understanding of the properties of inorganic-organic hybrid materials. A one-dimensional (1D) lead bromide formulated as [H][NH3(CH2)2SS(CH2)2NH3][H2O][PbBr5] (1) could be converted into a new two-dimensional (2D) complex, [NH3(CH2)2SS(CH2)2NH3][PbBr4] (2), by soaking the crystals in water. The isolated 2D compound showed single-layer lead-halide perovskite structures. Electrospray ionization mass spectrometry (ESI-MS) analyses of the reaction solution revealed that the [PbBr3]- fragments are initially formed from the rapid decomposition of the 1D [PbBr5]3- chains and subsequently reassemble into 2D [PbBr4]2- layers, which was verified by powder X-ray diffraction (PXRD) and microcalorimetry. Because of the decomposition and reassembly process, complex 1 could be used as a precursor to synthesize M2+-doped 2D lead bromide perovskites, namely, Mn@2, Ni@2 and Cd@2. In addition, preliminary tests indicated that complex 2 exhibited a lower optical band gap (3.25 eV) and higher electrical conductivity (3.2 × 10-11 S cm-1) than complex 1 (3.38 eV, 5.4 × 10-12 S cm-1). |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/c9dt02068c |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/c9/dt/c9dt02068c/c9dt02068c1.pdf |
| PubMed reference number | 31389455 |
| Alternate Webpage(s) | https://doi.org/10.1039/c9dt02068c |
| Journal | Medline |
| Journal | Dalton transactions |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
