Bulk nanocomposite made of ZnO lamellae embedded in the ZnWO4 matrix: growth from the melt

Abstract Zinc oxide (ZnO) nanostructures exhibiting high exciton binding energy and efficient radiative recombination, even at the room temperature, are of increasing interest due to their prospective exploitation in optoelectronic laser applications. However, attempts synthesize well-ordered structures through simple fast process have faced many difficulties. Here, we demonstrate a novel manufacturing method ZnO lamellae embedded crystalline wide band gap dielectric matrix zinc tungstate, ZnWO 4 . The is based on directional solidification eutectic composite, directly from melt, resulting nanostructured bulk material. Electron microscopy studies revealed clear phase separation between phases, cathodoluminescence confirmed emission temperature thus quality crystallinity lamellae, without defect emission. Hence, utilization eutectics may enable cost-efficient composites use optical devices. Graphical abstract