Photoelectrochemical properties of Ni-doped CuO nanorods grown using the modified chemical bath deposition method

Jin-Wook, Ha; Oh, Jaejin; Choi, Hayoung; Ryu, Hyukhyun; Lee, Won–Jae; Bae, Jong‐Sup

doi:10.1016/j.jiec.2017.09.004

Cited by 44 publications

(7 citation statements)

References 33 publications

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“…With the increase of Ni doping amount and oxygen flow rate, the Ni2p 3/2 peak and Ni2p 1/2 peak are clearly shown in figure 4 (b). It is consistent with the result of literature[15] that Ni2p peak can be completely displayed with 20% concentration of Ni doping, which means that the integrity of core level spectra of Ni2p is closely related to the preparation process. Moreover, the complete binding energy spectrum of Ni2p indicates that the role of Ni 2+ is becoming more and more important for the infrared spectrum modulation of alloy oxide.…”

supporting

confidence: 92%

“…During the sputtering process, the CuO phase does not appear. In figure 1, the diffraction peaks of nickel oxide and silver oxide are not observed, which indicates that doped Ni and Ag does not change the crystalline structure of the oxide [15], but decreases the intensity of the peaks and crystallinity, which is probably caused by the strain.…”

Section: Phase Analysismentioning

confidence: 96%

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Composition control and selective infrared radiative properties of copper alloy oxides by DC reactive sputtering

Wang

2022

J. Phys.: Conf. Ser.

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In order to identify new selective infrared radiative materials, Cu80Ni15Ag5 and Cu70Ni25Ag5 oxides were prepared by DC reactive magnetron sputtering under atmosphere with different ratio of argon to oxygen. The composition of the copper alloy oxides was analyzed by XRD, XPS and Raman. When the ratio of argon to oxygen was 50:2, the alloy oxide is amorphous, whereas the alloy oxide prepared at the ratio of argon to oxygen from 50:4 to 50:10 is Cu4O3. The doping of Ni and Ag may impede CuO phase formation, deteriorate the crystallinity, and increase the defects. The emissivity measurement results show that Cu70Ni25Ag5 oxides prepared at the ratio of argon to oxygen of 50:10 have good selective infrared radiative properties, and the emissivity difference is more than 0.8 between 3μm band and 8-14μm band.

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supporting

confidence: 92%

Section: Phase Analysismentioning

confidence: 96%

Composition control and selective infrared radiative properties of copper alloy oxides by DC reactive sputtering

Wang

2022

J. Phys.: Conf. Ser.

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“…However, the number of surface states will be decreased for the Ni-doped CuO films. So, fewer holes will be recombined, leading to the increase of the photocurrent and conductivity . After 20% Ni doping, the small resistivity and high absorption coefficient of the Cu 0.8 Ni 0.2 O film also contribute to the high performance of the Cu 0.8 Ni 0.2 O photodetector .…”

Section: Results and Discussionmentioning

confidence: 99%

High Responsivity and External Quantum Efficiency Photodetectors Based on Solution-Processed Ni-Doped CuO Films

Yin

Yang

Zhao

et al. 2020

ACS Appl. Mater. Interfaces

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Photodetectors based on p-type metal oxides are still a challenge for optoelectronic device applications. Many effects have been paid to improve their performance and expand their detection range. Here, high-quality Cu1–x Ni x O (x = 0, 0.2, and 0.4) film photodetectors were prepared by a solution process. The crystal quality, morphology, and grain size of Cu1–x Ni x O films can be modulated by Ni doping. Among the photodetectors, the Cu0.8Ni0.2O photodetector shows the maximum photocurrent value (6 × 10–7 A) under a 635 nm laser illumination. High responsivity (26.46 A/W) and external quantum efficiency (5176%) are also achieved for the Cu0.8Ni0.2O photodetector. This is because the Cu0.8Ni0.2O photosensitive layer exhibits high photoconductivity, low surface states, and high crystallization after 20% Ni doping. Compared to the other photodetectors, the Cu0.8Ni0.2O photodetector exhibits the optimal response in the near-infrared region, owing to the high absorption coefficient. These findings provide a route to fabricate high-performance and wide-detection range p-type metal oxide photodetectors.

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“…To achieve such improvement, doping and co-doping of these films have been widely studied. Various elements, such as K [9], Na [10], Li [10,11], Ag [12], Ni [13,14], Ce [15], Mn [16], La [17], and others, were described as dopant elements.…”

Section: Introductionmentioning

confidence: 99%

Multi-Layered Sol–Gel Spin-Coated CuO Nanofilm Characteristic Enhancement by Sn Doping Concentration

et al. 2022

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CuO films, with their many features, attract special attention for applications in various optoelectronics. In their pristine form, CuO films suffer from low conductivity, which limits their application. Modification, especially by doping, is thus needed. The effects of tin (Sn) doping on the structure, morphology, and optical and, more importantly, electrical properties of multi-layered copper oxide (CuO) films deposited onto tin-doped indium oxide (ITO)/glass substrates by sol–gel spin coating are examined here. The multi-layered films were characterized with X-ray diffraction (XRD), atomic force microscopy (AFM), electronic absorption (UV-Visible) spectra, and four probe methods. The results confirmed the substitution of Cu2+ ions by Sn4+ ions in the CuO crystallites without altering their monoclinic structure. The measured crystallite size values decreased with increased doping concentration, indicating increased imperfection. This applies to both 5- and 10-layered CuO films. The doping concentration affected other film characteristics, namely, surface morphology and electrical conductivity, in each layered film. Among various systems, the 10-layered film, with 1.5 at% Sn, exhibited optimal properties in terms of higher uniformity (mean square root surface roughness 41 nm) and higher conductivity (50.3 × 10−3·Ω−1·cm−1).

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Photoelectrochemical properties of Ni-doped CuO nanorods grown using the modified chemical bath deposition method

Cited by 44 publications

References 33 publications

Composition control and selective infrared radiative properties of copper alloy oxides by DC reactive sputtering

Composition control and selective infrared radiative properties of copper alloy oxides by DC reactive sputtering

High Responsivity and External Quantum Efficiency Photodetectors Based on Solution-Processed Ni-Doped CuO Films

Multi-Layered Sol–Gel Spin-Coated CuO Nanofilm Characteristic Enhancement by Sn Doping Concentration

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