Doping Mn(II) in All-Inorganic Ruddlesden-Popper Phase of Tetragonal Cs2PbCl2I2 Perovskite Nanoplatelets

Anirban Dutta; Rakesh Kumar Behera; Sourav Deb; Sujoy Baitalik; Narayan Pradhan

doi:10.1021/acs.jpclett.9b00738

Doping Mn(II) in All-Inorganic Ruddlesden-Popper Phase of Tetragonal Cs₂PbCl₂I₂ Perovskite Nanoplatelets

J Phys Chem Lett. 2019 Apr 18;10(8):1954-1959. doi: 10.1021/acs.jpclett.9b00738. Epub 2019 Apr 8.

Authors

Anirban Dutta¹, Rakesh Kumar Behera¹, Sourav Deb², Sujoy Baitalik², Narayan Pradhan¹

Affiliations

¹ School of Materials Sciences , Indian Association for the Cultivation of Science , Kolkata 700032 , India.
² Inorganic Chemistry Section, Department of Chemistry , Jadavpur University , Kolkata 700032 , India.

PMID: 30943721
DOI: 10.1021/acs.jpclett.9b00738

Abstract

Doping Mn(II) in inorganic Ruddlesden-Popper phase Cs₂PbCl₂I₂ perovskite nanoplatelets is reported. The host nanostructures were prepared with a calculative protocol taking the exact required composition of Cs(I) and Pb(II) and injecting the preformed mixed oleylammonium chlorides and iodides at optimized reaction temperature. Reactions were optimized with various halides and their mixtures, but the stable phase of the Cs₂PbX₄ system was obtained only for the chloride-iodide mixed-halide system. Introduction of Mn(II) along with Pb(II), resulted in successful light-emitting doped nanocrystals. Measuring the photoluminescence and the decay lifetimes at room and liquid nitrogen temperatures, the variations in the excitonic, self-trapped, and Mn dopant emission properties were compared with those of the chalcogenide and perovskite nanocrystals.