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Enhanced Luminescence and Mechanistic Studies on Mn-doped Double Layered Perovskite Phosphors: Cs4Mn1−xCdxBi2Cl12

preprint
submitted on 29.07.2020 and posted on 31.07.2020 by Brenda Vargas, Diana T. Reyes-Castillo, Eduardo Coutino-Gonzalez, Citlali Sánchez-Aké, Carlos Ramos, Ciro Falcony, Diego Solis-Ibarra
Halide perovskites offer great promise for optoelectronic applications, but stability issues continue to hinder its implementation and long-term stability. The stability of all-inorganic halide perovskites and the inherent quantum confinement of low dimensional perovskites can be harnessed to synthesize materials with high PL efficiency. An example of such materials is the recently reported new family of layered double perovskites, Cs4Mn1−xCdxBi2Cl12. Herein, we report a new synthetic procedure that enhances the maximum PLQY of this family materials to up 79.5%, a 20% enhancement from previous reports and the highest reported for a Mn-doped halide perovskite. Importantly, stability tests demonstrate that these materials are very stable towards humidity, UV irradiation, and temperature. Finally, we investigated the photophysics, the effects of magnetic coupling and temperature in the PL efficiency and proposed a mechanism for the emission process. Our results highlight the potential of this family of materials and related layered all-inorganic perovskites for solid-state lighting and optoelectronic applications

Funding

PAPIIT IA202418

CONACYT CB-A1-S-8729

History

Email Address of Submitting Author

diego.solis@unam.mx

Institution

UNAM

Country

Mexico

ORCID For Submitting Author

0000-0002-2486-0967

Declaration of Conflict of Interest

No conflict of interest

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