Highly Porous NiO Nanoflower based Humidity Sensor Grown on Seedless Glass Substrate via One Step Simplistic Immersion Method

Parimon, Norfarariyanti; Mamat, M. H.; Ahmad, Mohd Rozi; Banu, I. B. Shameem; Rusop, M.

doi:10.35940/ijeat.a3052.109119

Cited by 6 publications

(3 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The growth of CR is scattered and not uniform.Both undoped and doped samples have similar nanostructures with no significant differences. This structure is observed as in the previous study, where the same immersion method was used[12]. The only difference between the two samples is their nanosheet and CR thickness.…”

supporting

confidence: 82%

See 1 more Smart Citation

Undoped and Li-Doped NiO Coral Reef-like Structures Fabricated using Immersion Method

Ladjahirin,

Parimon,

Mamat

et al. 2024

MATEC Web Conf.

View full text Add to dashboard Cite

Nickel oxide (NiO) is one of the p-type semiconductors with unique properties suitable for nanosensor applications. It has a wide range band gap and can be fabricated in various methods, leading to different nanostructures and results. In this study, undoped and lithium (Li)-doped NiO were fabricated using the immersion method to investigate their properties. The field emission scanning electron microscopy analysis revealed that both samples produced two layers of nanosheet and nano coral reef-like (CR) structures. X-ray diffraction patterns confirmed the average crystallite sizes for undoped and Li-doped NiO are 24.70 nm and 31.19 nm, respectively. According to ultraviolet-visible spectroscopy, Li-doped NiO has a higher average transmittance percentage of 53% compared to undoped NiO, which has 40%. The estimated optical band gap values are not much different, with 3.94 eV for undoped and 3.95 eV for Li-doped. Electrical measurements also indicated that Li-doped NiO has a higher conductivity value of 7.9 x 10-2 S.m-1, whereas undoped NiO has 7.71 x 10-2 S.m-1.

show abstract

supporting

confidence: 82%

“…In this study, besides undoped NiO, lithium (Li) is used as a dopant element to be incorporated with NiO. The immersion method is employed to deposit undoped and Li-doped NiO nanostructures, with a NiO thin film (TF) used to enhance the adhesion between the nanostructures and glass substrates, as previous research has confirmed [12].…”

Section: Introductionmentioning

confidence: 99%

Undoped and Li-Doped NiO Coral Reef-like Structures Fabricated using Immersion Method

Ladjahirin,

Parimon,

Mamat

et al. 2024

MATEC Web Conf.

View full text Add to dashboard Cite

show abstract

“…Moreover,  -Fe2O3 is abundant, nontoxic, low cost, and suitable for use in sensors, catalysts pigments, and anode materials [17,18]. Besides  -Fe2O3, NiO exhibits a broader bandgap, usually reported within 3.6-4.0 eV at room temperature [19,20]. In addition to being considered transparent in the visible light region [21], NiO also possesses good electrical conductivity and a high surface to volume ratio [22].…”

Section: Introductionmentioning

confidence: 99%

PHYSICAL PROPERTIES OF NOVEL α-Fe2O3/NiO HETEROSTRUCTURES THROUGH IMMERSION/ SOL–GEL SPIN COATING METHOD: DIFFERENT DEPOSITION NUMBERS OF NiO LAYER

et al. 2021

Self Cite

View full text Add to dashboard Cite

The novel hematite (α-Fe2O3)/nickel oxide (NiO) heterostructures were grown on fluorine-doped tin oxide (FTO) coated glass substrates at various deposited NiO of 3, 5, and 7 layers. The heterostructures were successfully synthesized using the immersion and sol–gel spin coating methods for α-Fe2O3 and NiO films, respectively. The field emission scanning electron microscopy analysis showed that each sample of α-Fe2O3/NiO heterostructures has a unique surface morphology when deposited with different NiO layers. The X-ray diffraction pattern shows that the number of NiO layers affected the diffraction peaks. The NiO diffraction peak intensity at (111) plane increased when the deposition number of NiO layer was increased. The crystallite sizes of NiO were 35.4, 33.6, and 38.0 nm for 3-, 5-, and 7-layer NiO, respectively. The interplanar spacing, lattice parameter, and unit cell volume indicate NiO with 3-layer as the highest, while 5- and 7-layer had the same values. Meanwhile, the strain and stress values show the compressive strain and tensile stress, respectively. The optical properties reveal that the highest transmittance and the lowest absorbance percentages were recorded for a 3-layer NiO sample. In contrast, the lowest transmittance and the highest absorbance percentages were obtained for the sample with 5-layer NiO. Different thicknesses and morphologies of heterostructures explained these situations. In addition, each unique heterostructure of α-Fe2O3/NiO with high visible light absorption nature is perceived to reduce the bandgap energy and has the potential to be used in sensor and solar cell applications.

show abstract

Synthesis and Properties of NiO Nanosheet Array Films on Glass Substrates via Immersion Technique

Parimon

Mamat

Rusop

2021

Lecture Notes in Mechanical Engineering

View full text Add to dashboard Cite

Highly Porous NiO Nanoflower based Humidity Sensor Grown on Seedless Glass Substrate via One Step Simplistic Immersion Method

Cited by 6 publications

References 13 publications

Undoped and Li-Doped NiO Coral Reef-like Structures Fabricated using Immersion Method

Undoped and Li-Doped NiO Coral Reef-like Structures Fabricated using Immersion Method

PHYSICAL PROPERTIES OF NOVEL α-Fe2O3/NiO HETEROSTRUCTURES THROUGH IMMERSION/ SOL–GEL SPIN COATING METHOD: DIFFERENT DEPOSITION NUMBERS OF NiO LAYER

Synthesis and Properties of NiO Nanosheet Array Films on Glass Substrates via Immersion Technique

Contact Info

Product

Resources

About