Design, synthesis, and investigation of energy transfer mechanisms in YXO₄ compounds (X = V⁵⁺, P⁵⁺, As⁵⁺) doped with transition metal ions and rare earth ions
Auxillary supervisor: dr Adam Watras
Description:
The main goal of the PhD thesis is to design, synthesize, and investigate, how the composition of the host material influences the Metal-Metal Charge Transfer (MMCT) process in mixed compounds of the form YV1-x-yPxAsyO4 (0 ≤ x + y ≤ 1) doped with s² ions (Bi³⁺, Sb³⁺, Pb²⁺), transition metals (Mn²⁺, Ti³⁺, Cr⁵⁺), and rare earth metal ions (Ce³⁺, Eu³⁺, Tb³⁺, Pr³⁺).
This PhD thesis will focus on mixed compounds to investigate the role of d0-ion content (V5+, P5+, As5+) in determining the mechanisms and nature of charge-transfer processes between dopant ions and matrix ions. The composition of the matrix alters the strength of the crystal field, a key factor in determining the position of the absorption bands of s2-type ions and transition-metal ions. This research will lead to a better understanding of MMCT processes and other charge transfer mechanisms.
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