Wavelength Converting Material Oxygen-Filled Lattice Efficiency

The patent applies parameter changes by systematically varying the substitution parameters (x, y, z, w1, w2) in the crystal lattice formula to optimize the balance between structural complexity and conversion efficiency. Specifically, it adjusts the ratios of rare-earth elements (R), metal elements (M), and bivalent metal elements (A) along with their substitution levels to achieve maximum photometric efficiency while maintaining a manageable crystal structure.

The patent employs composite materials by creating a multi-element doped crystal lattice that combines rare-earth elements (for luminescence), metal elements (for structural stability), and bivalent metal elements (for charge compensation). This composite approach within the host lattice enables simultaneous optimization of bonding strength, charge balance, and light conversion efficiency that single-element doping cannot achieve.

The patent applies local quality by creating specific substitution sites within the crystal lattice where bivalent metal elements (A) replace trivalent rare-earth elements (R) at defined positions (indicated by parameter x). This localized substitution strategy allows charge compensation to occur at specific lattice locations without requiring uniform expansion of the entire host lattice volume, thus accommodating charge balance needs within existing spatial constraints.

The patent utilizes another dimension by introducing multiple substitution parameters (x, y, z, w1, w2) that operate independently along different compositional dimensions. This multi-dimensional parameter space allows the formulation to achieve charge compensation through coordinated substitutions across different element positions and types, effectively using compositional complexity in multiple dimensions rather than requiring increased physical volume.

The patent applies preliminary action by incorporating oxygen into the host lattice during the epitaxial growth process itself, rather than requiring subsequent post-processing steps. The oxygen is introduced in controlled amounts during MOCVD or MBE growth to fill vacancies and form stable oxide bonds, ensuring proper stoichiometry is achieved during the primary manufacturing process and eliminating the need for complex secondary oxygen treatment steps.

The patent replaces mechanical/physical post-processing methods with a chemical approach during epitaxial growth. Instead of using mechanical mixing or physical diffusion to incorporate oxygen after growth, the method uses chemical vapor deposition to directly incorporate oxygen atoms into the lattice during growth, substituting a chemical process for what would otherwise require complex mechanical or thermal post-treatment operations.