Structural and spectroscopic analysis of wurtzite (ZnO)1−x(Sb2O3)x composite semiconductor

Ullah, Hafeez; Iqbal, Amjid; Zakria, M.; Mahmood, Asif

doi:10.1016/j.pnsc.2015.02.003

Cited by 28 publications

(10 citation statements)

References 36 publications

(32 reference statements)

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“…XRD patterns of all ZnO NRs AR layers exhibit all the characteristics of the diffraction peaks of ZnO, along with a strong Si phase, which are located at 34.38 • (002) and 69.26 • (001), respectively, as shown in Figure 4. The observed diffraction peaks confirm the perfect crystal of ZnO, having the hexagonal wurtzite phases of ZnO materials [35] along with the monocrystalline crystalline phase of Si. This examination clearly deduces the growth of single crystalline ZnO NRs on a Si surface via the low-temperature solution method, followed by annealing at 250 • C for 1 h. The growth of ZnO NRs on the surface of the textured Si wafer were analyzed to examine the crystalline phases by XRD measurements.…”

Section: Resultssupporting

confidence: 52%

Vertically Arranged Zinc Oxide Nanorods as Antireflection Layer for Crystalline Silicon Solar Cell: A Simulation Study of Photovoltaic Properties

Shah

KC²,

Akhtar

et al. 2020

Applied Sciences

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This paper describes the unique antireflection (AR) layer of vertically arranged ZnO nanorods (NRs) on crystalline silicon (c-Si) solar cells and studies the charge transport and photovoltaic properties by simulation. The vertically arranged ZnO NRs were deposited on ZnO-seeded c-Si wafers by a simple low-temperature solution process. The lengths of the ZnO NRs were optimized by changing the reaction times. Highly dense and vertically arranged ZnO NRs were obtained over the c-Si wafer when the reaction time was 5 h. The deposited ZnO NRs on the c-Si wafers exhibited the lowest reflectance of ~7.5% at 838 nm, having a reasonable average reflectance of ~9.5% in the whole wavelength range (400–1000 nm). Using PC1D software, the charge transport and photovoltaic properties of c-Si solar cells were explored by considering the lengths of the ZnO NRs and the reflectance values. The 1.1 μm length of the ZnO NRs and a minimum average reflectance of 9.5% appeared to be the optimum values for achieving the highest power conversion efficiency of 14.88%. The simulation study for the vertically arranged ZnO NRs AR layers clearly reflects that the low-temperature deposited ZnO NRs on c-Si solar cells could pose a greater prospect in the manufacturing of low-cost c-Si solar cells.

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Section: Resultssupporting

confidence: 52%

Vertically Arranged Zinc Oxide Nanorods as Antireflection Layer for Crystalline Silicon Solar Cell: A Simulation Study of Photovoltaic Properties

Shah

KC²,

Akhtar

et al. 2020

Applied Sciences

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“…There was no ZnSrelated peak detected in 30 min-and 60 min.-annealing samples. In spite of this, the most obvious ZnS-related peaks (JCPDS card no: 05-0566) were observed in sample of 90 min-annealing which indicated that enough amount S-inclusion might create weak Zn(O,S) host matrix [15]. While 30 min.-annealing samples had (100) preferential orientation, 60 min.…”

Section: Resultsmentioning

confidence: 92%

Annealing time effect on the optical properties of Zn(O,OH,S) films onto ZnO seed layer under un-vacuum ambient

Özütok

Yakar²

2018

Sakarya University Journal of Science

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In this study, Zn (O,OH,S) films were synthesized onto ZnO seed layers by chemical bath deposition, which were annealed at 500 °C. The differences of structural, morphological and detailed optical properties of the films were investigated depending on the annealing time (between 30 min. and 90 min.). While samples of 30.min and 90 min. showed decomposed structures, sample of 60 min. showed different dimensions of nano-flower structures. Although all films had ZnO-hexzagonal crystal structure, the most obvious ZnS-related peaks were observed in the sample of 90 min. Optical absorption edge was shifted at 362 nm from Uv-Vis spectroscopy. Although ZnO, Zn(OH)2 vibration related peaks were so sharp, ZnS vibration peaks were so weak for all samples from FTIR. The PL intensities were differential depending on the annealing time but defect state-corresponding peaks were similar for each films.

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“…. The d values of ZnO nanoparticles calculated using the Bragg's relation, d = λ/(2 sin θ ), were 0.28, 0.26, 0.25, 0.19, 0.16, 0.14, 0.137, and 0.135 nm corresponding to (1 0 0), (0 0 2), (1 0 1), (1 0 2), (1 1 0), (1 0 3), (1 1 0), and (2 0 1) planes, respectively, which can be indexed to that of hexagonal wurtzite structure of ZnO . The lattice constant of ZnO nanoparticles was 0.325 nm, while the crystallite size calculated using Scherrer's equation [37] was 20.9 nm.…”

Section: Resultsmentioning

confidence: 99%

Polyaniline/zinc oxide nanocomposite as room‐temperature sensing layer for methane

Sen

Mishra

Sonawane

et al. 2017

Polymer Engineering & Sci

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Methane detection in ambient condition has become essential as it is being increasingly used as compressed natural gas in many industrial processes and for domestic and transportation purposes. Hence, in this work, we report a room‐temperature methane sensor based on polyaniline/zinc oxide (PANI/ZnO) nanocomposite. The PANI/ZnO nanocomposite was prepared by chemical polymerization of aniline in the presence of ZnO nanoparticles. Electron microscopy results revealed the successful formation of nanocomposites with rod‐like ZnO nanoparticles embedded into the network of nanofibrillar PANI matrix. The PANI/ZnO nanocomposites exhibited a high response to methane at room temperature within a short response time of 20 s for a methane concentration (500 ppm) much lower than its flammability limit. Moreover, the humidity dependence of the sensor response was found to be very low. POLYM. ENG. SCI., 58:1438–1445, 2018. © 2017 Society of Plastics Engineers

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Structural and spectroscopic analysis of wurtzite (ZnO)1−x(Sb2O3)x composite semiconductor

Cited by 28 publications

References 36 publications

Vertically Arranged Zinc Oxide Nanorods as Antireflection Layer for Crystalline Silicon Solar Cell: A Simulation Study of Photovoltaic Properties

Vertically Arranged Zinc Oxide Nanorods as Antireflection Layer for Crystalline Silicon Solar Cell: A Simulation Study of Photovoltaic Properties

Annealing time effect on the optical properties of Zn(O,OH,S) films onto ZnO seed layer under un-vacuum ambient

Polyaniline/zinc oxide nanocomposite as room‐temperature sensing layer for methane

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