PEG-assisted Sol-gel Synthesis of Compact Nickel Oxide Hole-Selective Layer with Modified Interfacial Properties for Organic Solar Cells

Kim, Jung Kyu

doi:10.3390/polym11010120

Cited by 36 publications

(25 citation statements)

References 42 publications

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“…K.S. Kim [30]. Overall, our XPS results strongly match with the earlier reported results and the consolidated table contains quantification of chemical states listed in Tables 3 and 4.…”

Section: Chemical Analysis (Xps)supporting

confidence: 90%

Structural, spectroscopic and electrical properties of dc magnetron sputtered NiO thin films and an insight into different defect states

2021

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In this article, we report a detailed study on the influence of sputter power on physical properties of the NiO films grown by DC magnetron sputtering. Structural studies carried out by Grazing Incidence X-ray diffraction (XRD) reveals the polycrystalline nature of the films with FCC phase. The crystallographic orientation (111) plane followed by (200), (220), and (311) plane were evident from the XRD spectra. The average crystallites sizes were estimated from the spectra, and the values were compared using three different plots such as Scherrer, Williamson–Hall and size–strain plot. The surface morphology was carried out by atomic force microscopy. The deposited samples show semitransparent behavior in the visible region and the estimated band gap increased from 2.70 to 3.34 eV with an increase in sputter power. Furthermore, X-ray photoelectron spectroscopy (XPS) core-level Ni2p spectra were deconvoluted and the observed $${\text{Ni}}2{\text{p}}_{{{\text{3/2}}}}$$ Ni 2 p 3/2 , $${\text{Ni}}2{\text{p}}_{{1/2}}$$ Ni 2 p 1 / 2 domain along with their satellite’s peaks were analyzed. Most importantly, XPS quantification data and Raman spectra confirm the presence of both $${\rm{Ni}}^{2+}$$ Ni 2 + and $${\rm{Ni}}^{3+}$$ Ni 3 + states in the NiO films. The electrical properties carried at room temperature revealed that the resistivity of the film significantly increased and a mobility of ~ 84 $${\rm{cm}}^{2}{\rm{V}}^{-1}{s}^{-1}$$ cm 2 V - 1 s - 1 was obtained.

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“…K.S. Kim [30]. Overall, our XPS results strongly match with the earlier reported results and the consolidated table contains quantification of chemical states listed in Tables 3 and 4.…”

Section: Chemical Analysis (Xps)supporting

confidence: 90%

Structural, spectroscopic and electrical properties of dc magnetron sputtered NiO thin films and an insight into different defect states

2021

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“…In addition, they have also assigned the peaks at 857.1, 863 eV to the Ni +3 state [33,34]. Similarly, Dong-soo kim [36]. These trends are strongly in agreement with our XPS results and obtained multiple peaks are successfully assigned to Ni +2 and Ni +3 states with their total area of the peak summarized in table 3.…”

Section: Chemical Analysissupporting

confidence: 87%

Investigation on tailoring physical properties of Nickel Oxide thin films grown by dc magnetron sputtering

Salunkhe

Kekuda

2020

Mater. Res. Express

176

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We report a comprehensive study on influence of oxygen partial pressure on NiO thin films grown on glass substrates in a combined argon and oxygen ambience by reactive dc magnetron sputtering. In this present article, we have discussed the dependence of oxygen pressure on structural, chemical, morphological, optical and electrical properties of the sputtered NiO films. Glancing angle x-ray diffraction reveals that the deposited films were polycrystalline in nature with FCC phase. The preferred orientation changes from (200) to (111) in a higher O 2 flow rate environment and an average particle size was estimated using Scherrer relation. The surface morphology of films was studied by using atomic force microscopy. The x-ray photoelectron spectroscopy analysis demonstrates the core level Ni 2p spectra over a range of 850 eV to 885 eV of binding energy and observed Ni 2p 3/2 , Ni 2p 1/2 domains along with their satellite peaks. It infers the presence of both Ni +2 and Ni +3 oxidation states in the sputtered films. Additionally, Raman spectroscopy was carried out to confirm the structural defects level and crystalline nature of the films. The optical results show that deposited films were semi-transparent and the evaluated optical band gap of the material lies in the range 3.36 eV to 3.52 eV. The extracted electrical properties infer either n-type or p-type conductivity depending on the processing conditions of the films.

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“…Furthermore, a broad peak at around 27° corresponds to rGO suggesting the graphene sheet ordering along their stacking direction and characteristic peak at around 43.25° correspond to nickel oxide (NiO JCPDS card No. # 04-0835) [ 43 , 44 , 45 ]. The other characteristic peaks at positions (202) and (311) at 2θ value of 50.44° and 74.1°, respectively, correspond to copper oxide (CuO JCPDS card No.…”

Section: Resultsmentioning

confidence: 99%

Nanocomposites of NiO/CuO Based MOF with rGO: An Efficient and Robust Electrocatalyst for Methanol Oxidation Reaction in DMFC

et al. 2020

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In this work a novel bimetallic nickel oxide/copper oxide metal–organic framework (NiO/CuO MOF) has been developed by using two linkers: Benzene Dicarboxylic acid (BDC) and Pyrazine. The composites of NiO/CuO MOF with different amounts of reduced graphene oxide (rGO) were synthesized through a hydrothermal method and subsequently characterized by multiple significant techniques like XRD, SEM, EDX, FTIR and Raman IR for an investigation of their structural and morphological properties. The prepared series of material was later employed for electrochemical oxidation of methanol, tested by cyclic voltammetry (CV) in basic medium on a modified glassy carbon electrode (GCE). The electrochemical response depicts that increasing concentration of rGO enhances the electrocatalytic activity of the catalyst for methanol oxidation reaction (MOR). The catalyzed oxidation reaction of methanol by NiO/CuO MOF and rGO-NiO/CuO MOF composites give a superlative current density of 437. 28 mA/cm2 at 0.9 V potential at 50 mV/s scan rate. This activity makes it a promising catalytic material for electrolysis of methanol in direct methanol fuel cell (DMFC).

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PEG-assisted Sol-gel Synthesis of Compact Nickel Oxide Hole-Selective Layer with Modified Interfacial Properties for Organic Solar Cells

Cited by 36 publications

References 42 publications

Structural, spectroscopic and electrical properties of dc magnetron sputtered NiO thin films and an insight into different defect states

Structural, spectroscopic and electrical properties of dc magnetron sputtered NiO thin films and an insight into different defect states

Investigation on tailoring physical properties of Nickel Oxide thin films grown by dc magnetron sputtering

Nanocomposites of NiO/CuO Based MOF with rGO: An Efficient and Robust Electrocatalyst for Methanol Oxidation Reaction in DMFC

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