Fabrication and characterization of porous Si/CuO film for visible light MSM photodetector: The effect of post-processing temperature

Salih, Ethar Yahya; Bashir, Mohamed Bashir Ali; Rajpar, Altaf Hussain; Badruddin, Irfan Anjum

doi:10.1016/j.ceramint.2021.12.203

Cited by 26 publications

(7 citation statements)

References 33 publications

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“…The I-V characteristic under dark condition of the fabricated visible light CdO/porous Si photodetector is illustrated in figure 4(a) wherein devices fabricated at different laser energy exhibited relatively well-organized rectification behavior [13]. In such a geometry, the attained dark current is mainly due to the trapping of free electrons onto the surface of the deposited CdO film (inset in figure 4(a)) [16]; this can in turn be attributed to the adsorption of oxygen molecules as a result of the surface dangling bond phenomenon (O 2 (g) + e − → O 2− ). Upon exposure to light (inset in figure 4(b)), a number of electron-hole pairs are generated onto the surface of the deposited CdO film after which a boosted electron injection number is acquired within the conduction band (CB) of the utilized semiconductor [25,26].…”

Section: Characteristics Of the Deposited Filmsmentioning

confidence: 99%

“…Porous silicon is also used as a host for metal oxide nanomaterials due to the postoccurred excellent optical behavior, flexible structure, and relatively high surface-to-volume ratio [11,12]. Hence, the optoelectronic behavior of porous silicon could be potentially enhanced through the deposition of metal oxide semiconductors layer such as copper oxide (CuO), zinc oxide (ZnO), nickel oxide (NiO) and cadmium oxide (CdO) [13][14][15][16]. CdO is an n-type semiconductor which possesses direct and indirect optical band gaps of 2.5 eV and 1.98 eV, respectively [17].…”

Section: Introductionmentioning

confidence: 99%

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The impact of laser energy on the photoresponsive characteristics of CdO/Si visible light photodetector

Bashir¹,

Salih²,

Rajpar³

et al. 2022

J. Micromech. Microeng.

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In this article, cadmium oxide (CdO) was deposited using pulsed laser deposition approach on porous silicon (Si) wafer for visible light photodetector application, through which a series of devices were proposed as a function of the deposition energy. The microstructural as well as optical characteristics of the prepared film/s were demonstrated, respectively, using x-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and ultraviolet visible light spectroscopy (UV-Vis) analysis. In details, the UV-Vis analysis revealed the occurrence of optical band gaps within the range of 2.38 -2.42 eV, while an average nanoparticle diameter was found to be 45 nm using FE-SEM technique. This in turn demonstrated a sound relation with the photoresponsive behavior of the attained photodetectors. A photoresponsivity and specific detectivity of 1.9 μA/mW and 1.21×10^9 Jones were attained using 700 mJ laser energy. In the meanwhile, the estimated response/recover time of the addressed laser energy was found to be 300 sec. and 340 sec., respectively. The photo-responsive characteristics of the fabricated devices were found to be in positive linear correlation with the applied laser energy.

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Section: Characteristics Of the Deposited Filmsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The impact of laser energy on the photoresponsive characteristics of CdO/Si visible light photodetector

Bashir¹,

Salih²,

Rajpar³

et al. 2022

J. Micromech. Microeng.

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“…Metal and metal oxide NPs have shown a wide-range of applications such as solar cells, sensors, thermoelectric, catalysis…etc. [3][4][5][6][7] . In the field of nanotechnology, nanomedicine in particular, metal and metal oxide have revealed promising properties as antimicrobial agents 8,9 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Evaluation of Platinum Nanoparticles Using F. Carica Fruit Extract and Their Antimicrobial Activities

2023

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In this manuscript, a simple new method for the green synthesis of platinum nanoparticles (Pt NPs) utilizing F. carica Fig extract as reducing agent for antimicrobial activities was reported. Simultaneously, the microstructural and morphological features of the synthesized Pt NPs were thoroughly investigated. In particular, the attained Pt NPs exhibited spherical shape with diameter range of 5-30 nm and root mean square of 9.48 nm using Transmission Electron Microscopy (TEM) and Atomic Force Microscopy (AFM), respectively. Additionally, the final product (Pt NPs) was screened as antifungal and antibacterial agent against Candida and Aspergillus species as well as Gram-positive Staphyllococcus aureus and Gram-negative Acinetobacter species, respectively. Accordingly, the synthesized NPs demonstrated inhibition zones of 36 and 28 mm against fungal and bacterial species, respectively. The presented Pt NPs play an active role in both antifungal and antibacterial activities which indicates the presence of a well-regulated nano-materials system for biomedical application.

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“…In addition, thermal calcination of LDH results in the 2D layers' diminishment and the continuous formation of MMO structure, which consists of metal oxide and spinel phases [20]. The MMO formation has demonstrated a great attraction within research societies in many applications such as dye-sensitized solar cell [21], photodetector [22,23], and gas sensor [24,25], etc. The calcination temperature has great influence on the acquired MMO's properties, wherein its optical behavior was found to be potentially affected [26].…”

Section: Introductionmentioning

confidence: 99%

In-Depth Optical Analysis of Zn(Al)O Mixed Metal Oxide Film-Based Zn/Al-Layered Double Hydroxide for TCO Application

Salih¹,

Ramizy

Aldaghri

et al. 2022

Crystals

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In this article, an in-depth optical investigation of Zn(Al)O-mixed metal oxide (MMO) film using Zn/Al-layered double hydroxide (LDH) was elucidated through co-precipitation and spin coating techniques. The field emission scanning electron microscopy (FE-SEM) analysis revealed the occurrence of a vertically aligned sheet-like structure with a thickness of 60 nm for pristine LDH, which further reduced to 45 nm after calcination at 300 °C. Additionally, pristine LDH showed multiple optical bandgaps of 5.18, 3.6, and 3.2 eV. Moreover, a good agreement of the obtained optical bandgaps was attained between both utilized methods, ultraviolet-visible light (UV-Vis), and photoluminescence (PL) spectroscopies. The optical bandgap decreased at higher calcination temperatures, which indicates the active role of the applied post-fabrication process on the optical profile of the deposited MMO film/s. The demonstrated transmittance spectra of the deposited MMO films exhibited a transparency between 85% and 95%; this indicates the usefulness and consistency of the proposed film for transparent conductive oxide (TCO) based optoelectronic applications.

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Fabrication and characterization of porous Si/CuO film for visible light MSM photodetector: The effect of post-processing temperature

Cited by 26 publications

References 33 publications

The impact of laser energy on the photoresponsive characteristics of CdO/Si visible light photodetector

The impact of laser energy on the photoresponsive characteristics of CdO/Si visible light photodetector

Synthesis and Evaluation of Platinum Nanoparticles Using F. Carica Fruit Extract and Their Antimicrobial Activities

In-Depth Optical Analysis of Zn(Al)O Mixed Metal Oxide Film-Based Zn/Al-Layered Double Hydroxide for TCO Application

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