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Title: Monitoring the doping and diffusion characteristics of Mn dopants in cesium lead halide perovskites
Authors: Güner, Tuğrul
Akbalı, Barış
Özcan, Mehmet
Topçu, Gökhan
Demir, Mustafa Muammer
Şahin, Hasan
Keywords: Cesium compounds
Manganese oxide
Halide perovskites
Theoretical points
Publisher: American Chemical Society
Source: Güner, T., Akbalı, B., Özcan, M., Topçu, G., Demir, M. M., and Şahin, H. (2018). Monitoring the doping and diffusion characteristics of Mn dopants in cesium lead halide perovskites. Journal of Physical Chemistry C, 122(21), 11543-11549. doi:10.1021/acs.jpcc.8b02580
Abstract: Cesium lead perovskites, in the form of CsPbX3 or Cs4PbX6, have been widely used for various optoelectronic applications due to their exceptionally good optical properties. In this study, the effect of Mn doping on the structural and optical properties of cesium lead halide perovskite crystals are investigated from both experimental and theoretical points of view. It is found that adding MnCl2 during the synthesis not only leads to a Mn-driven structural phase transition from Cs4PbBr6 to CsPbCl3 but also triggers the Br- to Cl- halide exchange. On the other hand, it is observed that, under UV illumination, the color of Mn-doped crystals changes from orange to blue in approximately 195 h. While the intensity of Mn-originated photoluminescence emission exponentially decays in time, the intensity of CsPbCl3-originated emission remains unchanged. In addition, diffusive motion of Mn ions results in both a growing population of MnO2 at the surface and transition of the host into a cesium-rich Cs4PbCl6 phase.
ISSN: 1932-7447
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Photonics / Fotonik
Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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