Development of polypyrrole/Ni(OH)₂‐NiOcore‐shell nanocomposite as an optoelectronic device

Abstract

Polypyrrole (Ppy) and Ppy/Ni(OH) 2 -NiO nanocomposite are prepared through the in situ polymerization oxidation reaction (on glass), in which the composite is formed through the oxidation of NiSO 4 . The prepared materials were characterized to reveal their morphology, chemical structure, and optical properties.The Ppy and Ppy/Ni(OH) 2 -NiO have average particle sizes of 160 and 250 nm, respectively. Moreover, the bandgap values are 1.70 and 1.44 eV, respectively.Through the composite, the polymer acts as a shell (40 nm), while the Ni(OH) 2 -NiO is the core. Analysis of the Ppy illustrates that the crystalline nature of the polymer increases after the composite formation, in which the pure Ppy has no sharp peaks, while the characteristic two peaks are formed after the composite formation. Moreover, a hexagonal Ni(OH) 2 is confirmed inside the composite.The applications of the glass/Ppy and glass/Ppy/Ni(OH) 2 -NiO are carried out as optoelectronic devices, in which the testing is carried out under light/dark and monochromatic wavelengths light, the J ph values are 0.12 and 0.85 mAÁcm À2 , respectively. The photoresponsivity (R) for the composite optoelectronic is 12.5 mAÁW À1 while the detectivity (D) is 2.79*1011 Jones.

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

“…Analysis of the XRD pattern revealed the presence of MoO 2 and MoO 3 inorganic materials within the polymer matrix. The peaks observed at 28.3°, 36.5°, 41.5°, and 59.4° is for the (111), (211), (212), and (031), respectively, of MoO 2 (JCBDS 65-5787) [ 27 , 28 ]. The peaks observed at 31.3°, 39.7°, 45.2°, and 48.2° correspond to the (111), (040), (200), and (220) growth directions, respectively, of MoO 3 (JCPDS-05-0508) [ 23 , 24 ].…”

“…This observation is consistent with expectations, as higher-energy photons with shorter wavelengths (such as those in the UV and blue regions) have the potential to generate a larger number of hot electrons. The higher photoresponsivity values indicate that the photoelectrode is more efficient in converting incident light into electrical signals when exposed to photons with higher energy or frequency [ 12 , 27 , 28 , 29 ]. …”

Cr2S3-Cr2O3/Poly-2-aminobenzene-1-thiol as a Highly Photocatalytic Material for Green Hydrogen Generation from Sewage Water

“…According to the FTIR analysis shown in Figure 1 a, the function groups present in both P2ABT and Cr 2 S 3 -Cr 2 O 3 /P2ABT nanocomposite are confirmed, but with small shifts due to the presence of inorganic Cr 2 S 3 -Cr 2 O 3 in the polymer matrix [ 13 ]. Table 1 summarizes the position of the function groups and their shift behavior in the nanocomposite compared to the pure P2ABT.…”