Frisenda, Riccardo and Island, Joshua O. and Lado, Jose L. and Giovanelli, Emerson and Gant, Patricia and Nagler, Philipp and Bange, Sebastian and Lupton, John M. and Schueller, Christian and Molina-Mendoza, Aday J. and Aballe, Lucia and Foerster, Michael and Korn, Tobias and Angel Nino, Miguel and Perez de lara, David and Perez, Emilio M. and Fernandez-Rossier, Joaquin and Castellanos-Gomez, Andres (2017) Characterization of highly crystalline lead iodide nanosheets prepared by room-temperature solution processing. NANOTECHNOLOGY, 28 (45): 455703. ISSN 0957-4484, 1361-6528
Full text not available from this repository. (Request a copy)Abstract
Two-dimensional (2D) semiconducting materials are particularly appealing for many applications. Although theory predicts a large number of 2D materials, experimentally only a few of these materials have been identified and characterized comprehensively in the ultrathin limit. Lead iodide, which belongs to the transition metal halides family and has a direct bandgap in the visible spectrum, has been known for a long time and has been well characterized in its bulk form. Nevertheless, studies of this material in the nanometer thickness regime are rather scarce. In this article we demonstrate an easy way to synthesize ultrathin, highly crystalline flakes of PbI2 by precipitation from a solution in water. We thoroughly characterize the produced thin flakes with different techniques ranging from optical and Raman spectroscopy to temperature-dependent photoluminescence and electron microscopy. We compare the results to ab initio calculations of the band structure of the material. Finally, we fabricate photodetectors based on PbI2 and study their optoelectronic properties.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 2-DIMENSIONAL MATERIALS; SINGLE-LAYER; STRUCTURAL-PROPERTIES; RAMAN-SPECTROSCOPY; OPTICAL-PROPERTIES; PBI2; GRAPHENE; PHOTOLUMINESCENCE; MOS2; SEMICONDUCTORS; two-dimensional materials; PbI2; lead iodide; transition metal halides; optoelectronics; ab initio calculations; direct bandgap |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Lupton > Group Christian Schüller Physics > Institute of Experimental and Applied Physics > Chair Professor Lupton > Group John Lupton |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:19 |
| Last Modified: | 01 Mar 2019 07:43 |
| URI: | https://pred.uni-regensburg.de/id/eprint/1855 |
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