Publications by authors named "Vladimir I Korepanov"
As we know, defects caused in the synthetic process of metal halide perovskite are the most difficult to overcome, and greatly limit their photoelectric performances. Herein, a post-doped strategy was utilized to achieve an interesting morphology evolution from a standard octahedron to a snowflake-like sheet during the Mn-doped CsNaBiCl process, which realizes the obvious photoluminescence quantum efficiency (PLQY) enhancement of the CsNaBiCl:Mn phosphor. This surprising evolution is ascribed to the morphology collapse and reconstruction induced by Mn exchange.
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- Tuning crystal phase transformations is essential for developing ideal phosphor polymorphs, which impact their optical properties and stability.
- The study investigates the phase transformation of Mn-doped KGeF, revealing that introducing HF solution and Si ions can create different KGF forms.
- Si-doped hexagonal KGF exhibits the best stability and photoluminescence, with phase transformation linked to a precipitation-dissolution balance and ionic exchange mechanisms.
(Tb Mn )Al(Al Si )O:Ce solid solution phosphors were synthesized by introducing the isostructural MnAl(SiO) (MAS) into TbAlO:Ce (TbAG). Under 456 nm excitation, (Tb Mn )Al(Al Si )O:Ce shows energy transfers (ET) in the host, which can be obtained from the red emission components to enhance color rendering. Moreover, (Tb Mn )Al(Al Si )O:Ce ( = 0-0.
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