Growth Control of II-VI Epilayer on III-V Nanocrystals

III-V/II-VI core/shell heterostructured nanocrystals (<i>h</i>-NCs) are promising photonic materials for various light-emitting applications. The photophysical properties and stability of III-V/II-VI <i>h</i>-NCs and the performance of photonic applications are governed by the morphology that determine their optoelectronic properties and photochemical stability. However, unlike conventional <i>h</i>-NC synthesis system, III-V/II-V core/shell <i>h</i>-NCs has been relatively difficult because of hetrerovalent surface polarity.<br/> Herein, we unveil the growth rate of each facet to make anisotropic growth. Specifically, we design III-V/II-V core/shell <i>h</i>-NCs that control the surface dependent growth. We conduct a comprehensive study across synthesis, spectroscopic analysis, and calculation to identify the growth mechanism and photophysical properties according to the shape. Following the guidelines for structure engineering, we discuss the impact of engineered structure and reveal optical and optoelectronic properties across III-V/II-V core/shell <i>h</i>-NCs.