Near-infrared colloidal nanocrystals (NIR-CNCs) have been widely utilized in optoelectronic applications due to their exceptional optical properties and suitability for mass production. However, their practical application is often hindered by poor chemical stability and suboptimal electronic properties. In this work, four different surface ligand systems-insulating ligands, organic molecular linkers, inorganic molecular linkers, and matrix-type ligands-were systematically investigated to evaluate their effects on the transport and recombination behavior of NIR-CNCs