Effects of growth temperature on the photovoltaic properties of RF sputtered undoped NiO thin films

Jamal, Mohammad Shah; Shahahmadi, Seyed Ahmad; Chelvanathan, Puvaneswaran; Alharbi, Hamad F.; Karim, Mohammad Rezaul; Dar, Mushtaq Ahmad; Luqman, Monis; Alharthi, Nabeel H.; Al‐Harthi, Yahya; Aminuzzaman, Mohammod; Asim, Nilofar; Sopian, Kamaruzzaman; Tiong, Sieh Kiong; Amin, Nowshad; Akhtaruzzaman, Md.

doi:10.1016/j.rinp.2019.102360

Cited by 69 publications

(32 citation statements)

References 36 publications

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“…As can be seen, the diffraction peaks of NiO for (111), (220), (311), (222), (400), (511), (440), and (533) planes were detected at 2θs of 19.0°, 31.5°, 36.9°, 39.05°, 45.0°, 59.51°, 65.5°, and 78.0°, respectively, which confirmed full compliance with JCPDS card no of 047‐1049. [ 32 ] Besides, diffraction peaks for (111), (200), (220), (311), and (222) observed at 2θs of 37.1°, 43.3°, 63.0°, 75.5°, and 79.5°, respectively, which are in agreement with Co 3 O 4 pattern through JCPDS card no 01‐080‐1532. [ 33 ] The crystal size of the prepared material, using the Scherer equation (D = (0.9 λ)/βcosθ), [ 34 ] obtain about 20 nm.…”

Section: Resultssupporting

confidence: 67%

NiO‐Co₃O₄‐rGO as an Efficient Electrode Material for Supercapacitors and Direct Alcoholic Fuel Cells

Askari

Salarizadeh

Beheshti‐Marnani

et al. 2021

Adv Materials Inter

105

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Transition metal oxides can be performant electrode materials for supercapacitors and alcohol oxidation if their conductivity and capacity are improved. Herein, an advanced nanocomposite material made of NiO‐Co3O4 on reduced graphene oxide (rGO) is synthesized by a one‐step hydrothermal method for supercapacitors and methanol/ethanol oxidation. It is demonstrated that the nanocomposite is a promising material for energy storage as NiO‐Co3O4‐rGO supercapacitor electrodes achieve a specific capacity of 149 mAh g−1 (894 F g−1) at a current density of 0.5 A g−1, the discharge time of 689 s, and excellent stability of 95% after 6000 cycles. Moreover, NiO‐Co3O4‐rGO shows a current density of 15 and 10 mA cm−2 in methanol and ethanol oxidation reactions, respectively, along with excellent stability.

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Section: Resultssupporting

confidence: 67%

NiO‐Co₃O₄‐rGO as an Efficient Electrode Material for Supercapacitors and Direct Alcoholic Fuel Cells

Askari

Salarizadeh

Beheshti‐Marnani

et al. 2021

Adv Materials Inter

105

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“…It implies that the grown films undergo structural relaxation at elevated temperatures via increment in dislocation densities and low crystallite size, which infers change in growth dynamics, as explained in the later part of the article. The obtained results are well justified as an increment in crystallite size with substrate temperature (till 300 C) has been reported previously, [24][25][26] suggesting favorable growth energetics in the temperature regime of %200À300 C. However, it is also noteworthy to mention that crystallite size calculated for the sample grown at 200 C, that is, 19.98 nm, was much higher in comparison with the reported values. [24] Interestingly, the obtained 2θ values indicated tensile stress, which is expected to be uniform as the peak value (i.e., 2θ) remained identical when XRD was conducted at different positions on the grown NiO films.…”

Section: Resultssupporting

confidence: 90%

“…The obtained results are well justified as an increment in crystallite size with substrate temperature (till 300 C) has been reported previously, [24][25][26] suggesting favorable growth energetics in the temperature regime of %200À300 C. However, it is also noteworthy to mention that crystallite size calculated for the sample grown at 200 C, that is, 19.98 nm, was much higher in comparison with the reported values. [24] Interestingly, the obtained 2θ values indicated tensile stress, which is expected to be uniform as the peak value (i.e., 2θ) remained identical when XRD was conducted at different positions on the grown NiO films. However, the films grown at elevated substrate temperatures (T S ≥ 400 C) showed 2θ values approaching to bulk values, that is, unstretched NiO films (PDF #47-1049), which refer to stress relaxation via generation of higher number of dislocations, as shown in Table 1.…”

Section: Resultssupporting

confidence: 90%

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Temperature‐Driven Perturbations in Growth Kinetics, Structural and Optical Properties of NiO Thin Films

Mishra¹,

Barthwal²,

Tak³

et al. 2021

Physica Status Solidi (a)

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Recent years have witnessed a growing demand in the improvement of nanostructured metal oxides with p-type conductivity. Nickel oxide (NiO) is a naturally grown p-type metal-oxide semiconductor pursuing direct wide bandgap (from 3.6 to 4 eV), moderate conductivity, good chemical stability, high transmittance, and excellent optoelectronic properties. [1] It crystallizes in sodium chloride (NaCl)-type face-centered cubic (FCC) structure and exhibits maximum hole conductivity along (111) direction. [1][2][3] Being a transparent p-type semiconducting oxide, NiO offers potential application in the domain of perovskite solar cells (transparent electrodes), visible blind photodetection, solid-state gas sensing and electrochromic displays, etc. [2][3][4][5] Despite its technological importance, the growth of device-grade NiO thin films has remained a challenging task, mainly attributed to its low conductivity. To date, numerous studies on the growth of NiO via various physical and chemical methods including magnetron sputtering, [6,7] plasma-enhanced chemical vapor deposition (PECVD), [8] pulsed laser deposition (PLD), [9] thermal evaporation, [10] spray pyrolysis, [11] sol-gel processing, [12] etc. have been reported so far. However, among the various aforementioned methods, radio-frequency (RF) magnetron sputtering is the most common and a widely used technique for the growth of NiO thin films. [13][14][15][16][17][18] Literature reports that growth parameters play a critical role in governing the properties of NiO films grown by RF magnetron sputtering. [13][14][15][16]19] Modifications in growth parameters may introduce various defects such as structural points defects, dislocations, or perturbation-induced ingap states, [13,15] affecting the structural, optical, and electrical properties of the grown NiO films. Ahmed et al. [16] observed that the growth of NiO is substrate dependent and that the inherent material properties depend strongly on the types of substrate (Si, GaAs, PET, etc). In contrast, Grilli et al. [19] reported that RF power and sputtering gas significantly influence the resistivity (from 10 À2 to 10 À1 Ω-cm) and transmittance of the grown NiO films. A recent study by Turgut et al. [20] said that oxygen partial pressure not only changes the structural and morphological properties, but it also influences the oxidation state of nickel, leading to significant variation in the performance of NiO-based hydrogen sensors. [20] In a recent report, Dhull et al. [21] also demonstrated that substrate temperature can play a significant role in tailoring the morphology of NiO films, leading to perturbation in charge transfer characteristics. However, few other studies were also conducted to explore the influence of growth temperature on structural, optical, morphological, and device applications of NiO thin films, but the extent of study was limited to a lower growth temperature, that is, up to 300 C only. [22][23][24][25] It implies that growth temperature significantly

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“…Jamal et al deposited the NiO thin films by RF magnetron sputtering (50 W power) using Ar gas onto the SLG substrates maintained at 100–400 °C. [ 135 ] Increasing the deposition temperature up to 400 °C carrier concentration increased reaching 3.87 × 10 16 cm −3 with hole mobility and resistivity of 2.23 cm 2 V −1 s −1 and 72 Ω cm, respectively. [ 135 ] Deevi et al determined the ionization potential (5.19 eV) and bandgap (3.81 eV) for high‐temperature annealed NiO.…”

Section: Comment On the Deposition Protocols Of Proposed Tandem Configurationsmentioning

confidence: 99%

A Comprehensive Perspective on the Fabrication of CuGaSe₂/Si Tandem Solar Cells

Prathapani

Zhan

2021

Energy Tech

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This review points out the current need for further research on tandem solar cells as the commercial single‐junction solar cell technologies report close to their maximum performance limit. First, the conceptual insight and the desired interconnection schemes for tandem solar cells are briefly presented. Then, a comprehensive discussion on the structural, optical, and electronic properties of CuGaSe2, evaluating its use as a top cell absorber material, is presented. Furthermore, the current status and the critical analysis of CuGaSe2 solar cells, which finds that the adapted conventional device architecture possesses severe limitations, are presented. Based on the drawbacks of the existing materials in use, new materials to fabricate CuGaSe2 solar cells are proposed. Also, tandem configurations with newly proposed CuGaSe2 solar cell architecture by choosing Si photovoltaics as bottom cells are devised. In the end, further challenges in the devised tandem configurations with a focus on their band alignments are elucidated.

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Effects of growth temperature on the photovoltaic properties of RF sputtered undoped NiO thin films

Cited by 69 publications

References 36 publications

NiO‐Co₃O₄‐rGO as an Efficient Electrode Material for Supercapacitors and Direct Alcoholic Fuel Cells

NiO‐Co₃O₄‐rGO as an Efficient Electrode Material for Supercapacitors and Direct Alcoholic Fuel Cells

Temperature‐Driven Perturbations in Growth Kinetics, Structural and Optical Properties of NiO Thin Films

A Comprehensive Perspective on the Fabrication of CuGaSe₂/Si Tandem Solar Cells

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Effects of growth temperature on the photovoltaic properties of RF sputtered undoped NiO thin films

Cited by 69 publications

References 36 publications

NiO‐Co3O4‐rGO as an Efficient Electrode Material for Supercapacitors and Direct Alcoholic Fuel Cells

NiO‐Co3O4‐rGO as an Efficient Electrode Material for Supercapacitors and Direct Alcoholic Fuel Cells

Temperature‐Driven Perturbations in Growth Kinetics, Structural and Optical Properties of NiO Thin Films

A Comprehensive Perspective on the Fabrication of CuGaSe2/Si Tandem Solar Cells

Contact Info

Product

Resources

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NiO‐Co₃O₄‐rGO as an Efficient Electrode Material for Supercapacitors and Direct Alcoholic Fuel Cells

NiO‐Co₃O₄‐rGO as an Efficient Electrode Material for Supercapacitors and Direct Alcoholic Fuel Cells

A Comprehensive Perspective on the Fabrication of CuGaSe₂/Si Tandem Solar Cells