Modified Perovskite Quantum Dots Stabilizing Polar Solvent Decomposition

The patent introduces surface ligands (such as oleic acid, oleylamine) as intermediary substances that coat the perovskite quantum dot surface. These ligands act as a protective barrier between the perovskite core and the polar solvent environment, preventing direct contact and decomposition while maintaining the quantum dots' optical properties. The ligands mediate the interaction between the hydrophobic perovskite and hydrophilic environments.

The patent creates a composite structure where perovskite quantum dots are combined with organic ligands and encapsulated in protective shells. This composite approach integrates the high-performance perovskite core with stable organic materials, resulting in a hybrid structure that maintains the optical advantages of perovskite while gaining the stability of organic encapsulation materials.

The patent performs surface ligand modification during the quantum dot synthesis process itself, rather than as a separate post-synthesis step. The ligands are introduced in the precursor solution before the quantum dots form, allowing the surface modification to occur simultaneously with crystal growth. This preliminary action integrates multiple functions into a single process step.

The patent combines the quantum dot synthesis and surface modification steps into a single integrated process. The ligand addition, heating, stirring, and quantum dot formation occur together in one reaction vessel, merging what could be separate operations into a unified manufacturing step, thereby reducing overall process complexity.