Practical Optimization of Highly Sensitive AZO Photoconductor With Circular Electrode Scheme

Mousavi, Seyedeh Soraya; Sajad, Batool; Efafi, Babak; Alaibakhsh, Hamzeh; Jahromi, Khalil Eslami; Majlesara, Mohamad Hossein; Ghafary, Bijan

doi:10.1109/jlt.2018.2871628

Cited by 10 publications

(3 citation statements)

References 30 publications

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“…This property is very useful to detect the pH-level and was used extensively by researchers in various fields; it is employed in biological research to determine the acidity of the living media [4] and in analytical chemistry to detect the end point in acid-base titration. [5] Furthermore, azo compounds were studied extensively because of their excellent thermal and optical properties in applications such as optical recording medium, inkjet printing [6], oil-soluble light fast dyes [7], organic photoconductors [8] and molecular memory storage [9].…”

Section: Al-majidi and Al-khuzaiementioning

confidence: 99%

Synthesis and Characterization of New Azo Compounds Linked to 1, 8-Naphthalimide and Studying Their Ability as Acid-Base Indicators

Al-Majidi

Al-Khuzaie

2019

eijs

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New Azo compounds containing an 1,8-naphthalimide moiety were synthesized from 1, 8-naphthalic anhydride by a reaction with p-phenylenediamine or benzidine to produce 1,8-naphthalimide derivatives (1 or 2), which were converted to diazonium salt derivatives by using sodium nitrite and acetic acid at 0-5 áµ’C. The diazonium salt was subjected to a coupling reaction with different substituted phenol in alkaline media at 0-5 áµ’c to produce azo compound derivatives (3-14). The New Azo compound derivatives (3-14) were identified by 1H-NMR, 13C-NMR, and FTIR and by measuring characteristic physical properties and specific reactions. Also, the ability of the prepared azo compounds to work as acid-base indicator was investigated, since azo dyes have different and sharp colors in acidic or basic solutions.

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Section: Al-majidi and Al-khuzaiementioning

confidence: 99%

Synthesis and Characterization of New Azo Compounds Linked to 1, 8-Naphthalimide and Studying Their Ability as Acid-Base Indicators

Al-Majidi

Al-Khuzaie

2019

eijs

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“…Researchers in many different domains have extensively exploited this property for detecting pH levels; in analytical chemistry, it is employed to establish the end point of an acid-base titration [3] and calculate the acidity of the living medium for biological research [4]. Additionally, azo compounds have been thoroughly studied in applications like inkjet printing and optical recording mediums due to their superior thermal and optical properties, oil-soluble light-fast dyes [5], organic photoconductors [6], and molecular memory storage [7]. Recent studies have found a tremendous increase in interest in identifying the most extensively used azo compounds as markers due to the existence of delocalization and hues, especially yellow, red, and orange.…”

Section: Introductionmentioning

confidence: 99%

Novel Nano Zn+2-Compound from LA Ligand as an Acid-Base Indicator: Synthesis, Characterization, pH Sensor, and Fluorescent Study

AL-Qaysi,

Abbas

2023

Iraqi Journal of Science

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The main goal of our research is to synthesize novel nano Zn2+ complex with the 8-(2-(dansyl chloride)azo) adenine (LA) ligand as a pH sensor because of its advantageous properties, obtained from a single molecule. The Zn2⁺- LA complex was based on the production of an intensely dark purple-colored substance with λmax at 552 nm. Molar ratio of Zn2⁺- LA complex is a 1:2 in aqueous buffer. The optimum concentration (0.3) mM, pH (2-5.5), and time (0-3) hr at pH=5.5, that in the studies followed Lambert-law Beer'

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“…Semiconductor materials with wide-bandgap such as ZnO, SiC, GaN, and TiO2 have been used for producing Ultraviolet (UV) PDs and solar cells [2][3][4][5][6][7][8][9][10]. Among them, ZnO has attracted researchers' attention due to its unique features, including cheapness, high chemical stability, strong radiation hardness, high charge carrier mobility, and most importantly, the 3.37 eV wide-bandgap [3,6,[11][12][13][14]. Ordinary PDs require an external power supply that increases system power consumption, costs, and system volume.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Electrode Shape on Schottky Barrier and Electric Field Distribution of Flexible ZnO Photodiode

Jezeh

Efafi

Ghafary

2021

Preprint

Self Cite

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Three metal-semiconductor-metal (MSM) ultraviolet flexible self-powered photodiode (PDs) were fabricated, which differed in the shape of the electrodes. Here, the effect of the electrode's shape on the height of the Schottky barrier and the electric field in these PDs was investigated. They were prepared based on porous Zinc Oxide (ZnO) on fiberglass. Different shapes of the electrodes affect the height of the Schottky barrier in each metal-semiconductor contact and provide the basis for the formation of self-powered PDs. It also affects the electric field generated in the PD's bias condition and affects the PD's parameter. They were fabricated using the radio frequency (RF) sputtering technique, and copper electrodes with different shapes and a sample with interdigitated electrodes were created using the printed circuit board (PCB) method. The photocurrent of the sample with circular and rectangular electrodes was equal to 470 μA in 15V bias, which was twice as good as a sample with an interdigitated MSM structure. It also had the best photocurrent at 0V, which is equal to 0.8 μA. This sample had the best response time among these three samples, which was equal to 440 ms. It is noteworthy that the simulation data confirmed the practical results.

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Practical Optimization of Highly Sensitive AZO Photoconductor With Circular Electrode Scheme

Cited by 10 publications

References 30 publications

Synthesis and Characterization of New Azo Compounds Linked to 1, 8-Naphthalimide and Studying Their Ability as Acid-Base Indicators

Synthesis and Characterization of New Azo Compounds Linked to 1, 8-Naphthalimide and Studying Their Ability as Acid-Base Indicators

Novel Nano Zn+2-Compound from LA Ligand as an Acid-Base Indicator: Synthesis, Characterization, pH Sensor, and Fluorescent Study

The Effect of Electrode Shape on Schottky Barrier and Electric Field Distribution of Flexible ZnO Photodiode

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