Electronic Properties of Free-Standing Surfactant-Capped Lead Halide Perovskite Nanocrystals Isolated in Vacuo
We report an investigation of lead halide perovskite CH3NH3PbBr3 nanocrystals and associated ligand molecules by combining several different state-of-the-art experimental techniques, including synchrotron radiation-based XPS and VUV PES of free-standing nanocrystals isolated in vacuum. By using this...
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| Veröffentlicht in: | The journal of physical chemistry letters 2018-07, Vol.9 (13) |
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| container_title | The journal of physical chemistry letters |
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| creator | Milosavljević, Aleksandar R. Božanić, Dušan K. Sadhu, Subha Vukmirović, Nenad Dojčilović, Radovan others, and |
| description | We report an investigation of lead halide perovskite CH3NH3PbBr3 nanocrystals and associated ligand molecules by combining several different state-of-the-art experimental techniques, including synchrotron radiation-based XPS and VUV PES of free-standing nanocrystals isolated in vacuum. By using this novel approach for perovskite materials, we could directly obtain complete band alignment to vacuum of both CH3NH3PbBr3 nanocrystals and the ligands widely used in their preparation. We discuss the possible influence of the ligand molecules to apparent perovskite properties, and we compare the electronic properties of nanocrystals to those of bulk material. The experimental results were supported by DFT calculations. |
| format | Article |
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By using this novel approach for perovskite materials, we could directly obtain complete band alignment to vacuum of both CH3NH3PbBr3 nanocrystals and the ligands widely used in their preparation. We discuss the possible influence of the ligand molecules to apparent perovskite properties, and we compare the electronic properties of nanocrystals to those of bulk material. 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By using this novel approach for perovskite materials, we could directly obtain complete band alignment to vacuum of both CH3NH3PbBr3 nanocrystals and the ligands widely used in their preparation. We discuss the possible influence of the ligand molecules to apparent perovskite properties, and we compare the electronic properties of nanocrystals to those of bulk material. 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By using this novel approach for perovskite materials, we could directly obtain complete band alignment to vacuum of both CH3NH3PbBr3 nanocrystals and the ligands widely used in their preparation. We discuss the possible influence of the ligand molecules to apparent perovskite properties, and we compare the electronic properties of nanocrystals to those of bulk material. The experimental results were supported by DFT calculations.</abstract><cop>United States</cop></addata></record> |
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| identifier | ISSN: 1948-7185 |
| ispartof | The journal of physical chemistry letters, 2018-07, Vol.9 (13) |
| issn | 1948-7185 1948-7185 |
| language | eng |
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| source | ACS Publications |
| subjects | CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY FAR ULTRAVIOLET RADIATION LEAD HALIDES LIGANDS NANOCRYSTALS NANOSCIENCE AND NANOTECHNOLOGY PEROVSKITE SYNCHROTRON RADIATION X-RAY PHOTOELECTRON SPECTROSCOPY |
| title | Electronic Properties of Free-Standing Surfactant-Capped Lead Halide Perovskite Nanocrystals Isolated in Vacuo |
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