Highly Uniform Spherical MoO2-MoO3/Polypyrrole Core-Shell Nanocomposite as an Optoelectronic Photodetector in UV, Vis, and IR Domains

Abstract

A highly uniform spherical MoO2-MoO3/polypyrrole core-shell nanocomposite has been successfully synthesized as an optoelectronic photon sensing material, capable of detecting light in the UV, Vis, and IR domains. The nanocomposite is prepared through the oxidation of pyrrole using Na2MoO4, resulting in a uniform spherical morphology that has been confirmed by TEM, theoretical modeling, and SEM analyses. This morphology contributes to its promising optical behavior, characterized by a small bandgap of 1.36 eV. The optoelectronic photosensing capability of the nanocomposite has been evaluated across the UV, Vis, and IR spectra, demonstrating high efficiency. The photoresponsivity R values indicate the ability of the nanocomposite to generate hot electrons in response to incident photons. With an R value of 4.15 mA·W−1 at 440 nm, this optoelectronic device exhibits considerable promise for integration into an advanced technological apparatus. The detection (D) value of 9.30 × 108 Jones at 440 nm further confirms the high sensitivity in the Vis region. The excellent stability of the device can be attributed to the inherent MoO2-MoO3 oxide and Ppy polymer materials. This stability has been demonstrated through reproducibility studies and current-voltage measurements under various optical conditions. The combination of stability, efficiency, and sensitivity makes this optoelectronic device well suited for light sensing applications in both industrial and commercial settings. Its promising performance opens up opportunities for advancements in various fields requiring accurate and reliable light detection.

Fabrication of thin film solar cell based on CoO-CoS/P2-Amino-1-mercaptobenzene/polypyrrole with additional promising sensitivities to photons in a broad optical region

“…In the fabrication of the solar cell device or light-sensing system, the initial steps involve the construction of n and p-type layers. The p-type layer is synthesized using polypyrrole (Ppy) through the conventional chemical oxidative polymerization technique that is performed previously through our team [12,19,20]. The synthesis utilizes a monomer-to-oxidant ratio of 1:2.5, where HCl serves as both the electrolyte and acid medium, and also functions as the solvent for the monomer.…”

Quantum Dot Supernova-like-Shaped Arsenic (III) Sulfide-Oxide/Polypyrrole Thin Film for Optoelectronic Applications in a Wide Optical Range from Ultraviolet to Infrared

“…approach combines polymers with inorganic materials to improve their photo detectivity [10,[13][14][15].…”

“…Furthermore, some polymers' photodetector synthesis could be costly compared to their low reproducibility, i.e., low R or D values detected in a single spectral domain (UV, Vis, or near IR). This approach combines polymers with inorganic materials to improve their photo detectivity [10,[13][14][15].…”