Effect of substrate temperature on the nebulizer sprayed zinc oxide thin films

Dhanakodi, K.; Thirunavukkarasu, P.; Mariappan, R.; Rajamanickam, A. T.

doi:10.1016/j.ijleo.2015.10.143

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…13−15 Moreover, ZnO 14,15 is chemically and thermodynamically stable and basically crystallizes in the hexagonal wurtzite structure. 16 All the above unique features make ZnO a suitable material for diverse applications including antireflective coating, thin film solar cells, 17 transparent conductive oxide for flat panel displays, 18,19 gas sensors, 21,22 light emitting diodes (LEDs), 23 surface acoustic waves, 24 protective surface coatings, 25 piezoelectric transducers, 26 and so forth. These potential applications have boosted the research related to the development of betterquality ZnO thin films over the span of ongoing decades.…”

Section: Introductionmentioning

confidence: 99%

“…Zinc oxide (ZnO) is amongst the most widely used n-type metal oxide semiconductor materials because of its unique structural, optical, and electrical properties in conjugation with cheap, nontoxic nature, and natural abundance. − It has distinctive optoelectronic and physical properties such as tunable direct wide band gap of about 3.37 eV, high transparency (>80%) in the visible region, large exciton binding energy (60 meV) at room temperature, − optimum refractive index ( n ≈ 2.0), and notable electron mobility (as large as 155 cm 2 /V·s). − Moreover, ZnO , is chemically and thermodynamically stable and basically crystallizes in the hexagonal wurtzite structure . All the above unique features make ZnO a suitable material for diverse applications including antireflective coating, thin film solar cells, transparent conductive oxide for flat panel displays, , photodiodes, gas sensors, , light emitting diodes (LEDs), surface acoustic waves, protective surface coatings, piezoelectric transducers, and so forth. These potential applications have boosted the research related to the development of better-quality ZnO thin films over the span of ongoing decades.…”

Section: Introductionmentioning

confidence: 99%

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Influence of the Substrate, Process Conditions, and Postannealing Temperature on the Properties of ZnO Thin Films Grown by the Successive Ionic Layer Adsorption and Reaction Method

et al. 2021

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Here, we report the effect of the substrate, sonication process, and postannealing on the structural, morphological, and optical properties of ZnO thin films grown in the presence of isopropyl alcohol (IPA) at temperature 30–65 °C by the successive ionic layer adsorption and reaction (SILAR) method on both soda lime glass (SLG) and Cu foil. The X-ray diffraction (XRD) patterns confirmed the preferential growth thin films along (002) and (101) planes of the wurtzite ZnO structure when deposited on SLG and Cu foil substrates, respectively. Both XRD and Raman spectra confirmed the ZnO and Cu-oxide phases of the deposited films. The scanning electron microscopy image of the deposited films shows compact and uniformly distributed grains for samples grown without sonication while using IPA at temperatures 50 and 65 °C. The postannealing treatment improves the crystallinity of the films, further evident by XRD and transmission and reflection results. The estimated optical band gaps are in the range of 3.37–3.48 eV for the as-grown samples. Our experimental results revealed that high-quality ZnO thin films could be grown without sonication using an IPA dispersant at 50 °C, which is much lower than the reported results using the SILAR method. This study suggests that in the presence of IPA, the SLG substrate results in better c-axis-oriented ZnO thin films than that of deionized water, ethylene glycol, and propylene glycol at the optimum temperature of 50 °C. Air annealing of the samples grown on Cu foils induced the formation of Cu x O/ZnO junctions, which is evident from the characteristic I–V curve including the structural and optical data.

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