Nanotechnology World Conference 2026

Abstract

Semiconductor nanocomposites based on ZnO and spinel type phases were developed to investigate the role of interfacial structure and defect states in controlling the functional properties of advanced materials. The formation of multiphase heterostructures enables modulation of charge transfer behavior through engineered interfaces, which significantly influence the overall physicochemical performance. Structural and morphological characteristics were found to strongly depend on composition, affecting particle distribution, surface accessibility, and heterointerface density. Optical analysis indicates that moderate incorporation of the secondary phase preserves the intrinsic absorption properties of ZnO while promoting interfacial electronic interactions. In contrast, excessive incorporation leads to the formation of defect related states that act as recombination centers and negatively impact charge carrier dynamics. Photoluminescence investigations demonstrate that optimized nanocomposites exhibit reduced radiative recombination, reflecting improved charge separation efficiency at the interface. These properties contribute to enhanced utilization of solar irradiation in semiconductor systems.

Overall, the results highlight that the performance of semiconductor nanocomposites is governed by a balance between interfacial architecture and defect regulation rather than composition alone. This work provides insights into the design of advanced nanostructured materials for solar driven environmental and energy related applications