Visible light sensitive cupric oxide metal-semiconductor-metal photodetectors

Raghavendra, P. V.; Bhat, J. S.; Deshpande, Nishad G.

doi:10.1016/j.spmi.2017.12.014

Cited by 49 publications

(11 citation statements)

References 33 publications

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“…Bending vibration of H-O-H and stretching vibration of O-H was assigned to the peaks at 1683 cm −1 and 3317 cm −1, respectively [36]. By the addition of Ag then Co in the samples S2, S3, and S4, a little shift was observed in the main absorption peaks of CuO NPs.…”

Section: Ft-ir Studiesmentioning

confidence: 95%

Study the influence of silver and cobalt on the photocatalytic activity of copper oxide nanoparticles for the degradation of methyl orange and real wastewater dyes

Zeid

Ibrahem

Mohamed

et al. 2020

Mater. Res. Express

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CuO (S1) Single pure component nanoparticles (SPCNPs), Ag/CuO (S2) binary component hybrid nanoparticles (BCHNPS), Co1/Ag/CuO (S3), and Co2/Ag/CuO (S4) ternary component hybrid nanoparticles (TCHNPS) were synthesized via co-precipitation method. Several spectroscopic methods investigated the characterization of the prepared catalysts. Based on Crystal properties, CuO exhibit a monoclinic phase (tenorite); the grain size of the prepared samples was 28.15 nm, 29.42 nm, 27.86 nm, and 26.67 nm for S1, S2, S3, and S4 respectively. The addition of different content from Co as a dopant to silver decorated CuO gives a clear change to a flake shape. The presence of the IR absorption peaks in the region 400-600 cm −1 matched to the distinctive stretching vibrations of Cu-O bonds in the monoclinic phase structure of CuO. Disappearance of the Raman peaks of CuO and appearing of the new characteristic peaks of cobalt oxide confirms the doping process. Using DRS analysis, arrange of the bandgap values were S1 > S2 > S3 > S4. For the synthetic methyl orange and raw industrial dye, the photodegradation parameters were measured. The results show the excellent activity of Co2/Ag/CuO NPS compared with other samples. Electrical studies of the catalysts show a higher value for the dielectric constant in the higher and lower frequency regions for the sample S4. The hopping process of the charge carrier's improving as a result of the increase of applied field frequency which leads to an increase in the material conductivity.

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Section: Ft-ir Studiesmentioning

confidence: 95%

Study the influence of silver and cobalt on the photocatalytic activity of copper oxide nanoparticles for the degradation of methyl orange and real wastewater dyes

Zeid

Ibrahem

Mohamed

et al. 2020

Mater. Res. Express

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“…To clearly understand the superior optoelectronic performances of the proposed device, we compared the performance of the device ( CD = 300 nm) with those of other photodetectors. To the best of our knowledge, compared to recently developed CuO-based photodetectors (Table 1 ) 17 – 28 , 30 , 42 , the proposed device exhibited state-of-the-art levels of photo-responsivity, photo-detectivity, sensitivity, and response time. One further advantage of the proposed device is its compatibility with conventional semiconductor fabrication.…”

Section: Resultsmentioning

confidence: 86%

Aligned CuO nanowire array for a high performance visible light photodetector

Song

Kim

et al. 2022

Sci Rep

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Recently, copper oxide (CuO) has drawn much attention as a promising material in visible light photodetection with its advantages in ease of nanofabrication. CuO allows a variety of nanostructures to be explored to enhance the optoelectrical performance such as photogenerated carriers scattering and bandgap engineering. However, previous researches neglect in-depth analysis of CuO’s light interaction effects, restrictively using random orientation such as randomly arranged nanowires, single nanowires, and dispersed nanoparticles. Here, we demonstrate an ultra-high performance CuO visible light photodetector utilizing perfectly-aligned nanowire array structures. CuO nanowires with 300 nm-width critical dimension suppressed carrier transport in the dark state and enhanced the conversion of photons to carriers; additionally, the aligned arrangement of the nanowires with designed geometry improved the light absorption by means of the constructive interference effect. The proposed nanostructures provide advantages in terms of dark current, photocurrent, and response time, showing unprecedentedly high (state-of-the-art) optoelectronic performance, including high values of sensitivity (S = 172.21%), photo-responsivity (R = 16.03 A/W, λ = 535 nm), photo-detectivity (D* = 7.78 × 1011 Jones), rise/decay time (τr/τd = 0.31 s/1.21 s).

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“…Therefore, it can be effectively used for the photodetector application. Previous literature shows a limited work on the copper oxide film-based photodetectors [26,[29][30][31]. Particulaly, improvement in the performance of CuO photodetectors through annealing has been rearly investigated as compared to other photodetectors [29].…”

Section: Introductionmentioning

confidence: 99%

“…Previous literature shows a limited work on the copper oxide film-based photodetectors [26,[29][30][31]. Particulaly, improvement in the performance of CuO photodetectors through annealing has been rearly investigated as compared to other photodetectors [29]. In this work, thin film of CuO has been deposited and characterized for the fabrication of a metal-emicondcutor-metal photodetector and its performance has been improved through the annealing process.…”

Section: Introductionmentioning

confidence: 99%

Enhanced photodetection performance of sputtered cupric oxide thin film through annealing process

Tariq¹,

Afzal²,

Rafique³

2021

Preprint

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This study demonstrates an improvement in the photodetection response of a Cupric Oxide (CuO) thin film through the annealing process. The CuO thin film (400 nm thickness) was deposited on a silicon substrate using DC magnetron sputtering system. Annealing of the as-deposited film was carried out in a muffle furnace at 400 and 500 oC for two hours. X-ray diffraction pattern revealed the formation of a single phase CuO film whose crystallinity improved with increase of the annealing temperature. The field emission scanning electron microscopy indicated a compact and fine granular strcutre of the as-seposited film whereas the segregation and agglomeration of grains was observed after the film’s annealing. The photodetection performance of CuO film with Al contacts was investigated under the exposure of visible light (λ = 460 nm). The current-voltage graphs of as-deposited and annealed films displayed Schottky contact formation between the metal and semiconductor, owing to a lower work function of Al than that of the CuO. The photo-to-dark current ratio of the device was significantly enhanced after the film’s annealing. The increase in photocurrent became more pronounced upon increasing the light intensity from 58.4 to 511 µW/cm2. The maximum current gain and sensitivity values were found to be 66 and 7086.8 % respectively at 10V bias for the film annealed at 500 oC. The rise and fall time of the Al/CuO/Al photodetector was decreased after the film’s annealing.

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Visible light sensitive cupric oxide metal-semiconductor-metal photodetectors

Cited by 49 publications

References 33 publications

Study the influence of silver and cobalt on the photocatalytic activity of copper oxide nanoparticles for the degradation of methyl orange and real wastewater dyes

Study the influence of silver and cobalt on the photocatalytic activity of copper oxide nanoparticles for the degradation of methyl orange and real wastewater dyes

Aligned CuO nanowire array for a high performance visible light photodetector

Enhanced photodetection performance of sputtered cupric oxide thin film through annealing process

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