Abstract :

This research describes a successful fabrication process for CdO NPs using pulsed laser ablation. It also describes a photodetector with heterojunction. A rapid analysis of the morphological, structural, and optical properties was performed. The production of cadmium oxide thin films was confirmed through structural and morphological characterization. The nanofilms were 10.84 nm thick. X-ray diffraction patterns showed a match with the material used. The surface properties and shape of the cadmium oxide were analyzed using atomic force microscopy. The laser ablation process produced very small, regularly arranged, hemispherical, pointed, and uniformly distributed nanoparticles with few single columns. The detector’s response spectrum showed good selectivity for detecting visible and near-infrared light. Therefore, CdO NPs could be a promising candidate material for photovoltaic applications.

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Keywords :

CdO, heterojunction, photodetector, porous silicon

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