Structural and optoelectrical investigation of transparent and conductive ZnO thin films prepared by chemical vapor deposition

Purica, M.; Budianu, E.; Rusu, E.; Dănilă, M.; Gavrıla, Raluca

doi:10.1109/smicnd.2000.890210

Cited by 21 publications

(24 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of TM ions in the host semiconductor leads to an exchange interaction between itinerant sp-band electrons or holes and the d-electron spins localized at the magnetic ions, resulting in versatile magnetic field induced functionalities. A number of investigations on the synthesis of ZnO nanoparticles have been reported in the literature including thermal decomposition, chemical vapor deposition, sol-gel, hydrothermal, spray pyrolysis, precipitation, vapor phase oxidation, thermal vapor transport and condensation [7][8][9][10][11][12]. Low temperature solution combustion synthesis is emerging as a promising technique for the preparation of nanopowders as it is simple, fast and cost effective, does not require high-temperature furnaces and complicated set-ups [13].…”

Section: Introductionmentioning

confidence: 99%

Structural, EPR, photo and thermoluminescence properties of ZnO:Fe nanoparticles

Reddy

Kokila

Nagabhushana

et al. 2012

Materials Chemistry and Physics

View full text Add to dashboard Cite

a b s t r a c tZn (1−x) Fe (x) O (1+0.5x) (x = 0.5-5 mol%) nanoparticles were synthesized by a low temperature solution combustion route. The structural characterization of these nanoparticles by PXRD, SEM and TEM confirmed the phase purity of the samples and indicated a reduction in the particle size with increase in Fe content. A small increase in micro strain in the Fe doped nanocrystals is observed from W-H plots. EPR spectrum exhibits an intense resonance signal with effective g values at g ≈ 2.0 with a sextet hyperfine structure (hfs) besides a weak signal at g ≈ 4.13. The signal at g ≈ 2.0 with a sextet hyperfine structure might be due to manganese impurity where as the resonance signal at g ≈ 4.13 is due to iron. The optical band gap E g was found to decrease with increase of Fe content. Raman spectra exhibit two non-polar optical phonon (E 2 ) modes at low and high frequencies at 100 and 435 cm −1 in Fe doped samples. These modes broaden and disappear with increase of Fe dopant concentration. TL measurements of ␥-irradiated (1-5 kGy) samples show a main glow peak at 368• C at a warming rate of 6.7• Cs −1 . The thermal activation parameters were estimated from Glow peak shape method. The average activation energy was found to be in the range 0.34-2.81 eV.

show abstract

Section: Introductionmentioning

confidence: 99%

Structural, EPR, photo and thermoluminescence properties of ZnO:Fe nanoparticles

Reddy

Kokila

Nagabhushana

et al. 2012

Materials Chemistry and Physics

View full text Add to dashboard Cite

show abstract

“…Many techniques have been used to prepare ZnO nanomaterials: solgel, 11,12 chemical coprecipitation, 13,14 chemical vapor deposition, 15 metalorganic chemical vapor deposition, 16 spray pyrolysis, 17 hydrothermal synthesis, 18 and inverse microemulsion. 4a,4b,1921 Using these techniques, different particle shapes have been prepared: nanowires, nanorods, nanospheres, nanotubes, and flower-like structures.…”

mentioning

confidence: 99%

Synthesis of ZnO and ZnO2 Nanoparticles by the Oil-in-water Microemulsion Reaction Method

et al. 2012

View full text Add to dashboard Cite

Crystalline ZnO and ZnO 2 nanoparticles (NPs) were prepared in one-pot oil-in-water (O/W) microemulsion media at room temperature by adding an aqueous solution of sodium hydroxide (followed by H 2 O 2 in the case of synthesis of ZnO 2 ) to the O/W microemulsion containing a Zn(II) organometallic precursor dissolved in the oil phase. After calcination of ZnO 2 NPs, ZnO NPs were also obtained, and their characteristics were compared with those of ZnO NPs prepared directly in O/W microemulsion. The materials were characterized by X-ray diffraction, scanning electron microscopy, and high-resolution transmission electron microscopy. Nanostructured ZnO materials have attracted a lot of attention in recent years because of their optical, electrical, and chemical properties, as well as their low toxicity. These materials are n-type semiconductors with a band gap of 3.37 eV and an exciton binding energy of 60 meV; in addition, they exhibit efficient UV-stimulated emission 1 at room temperature. Nanostructured ZnO has great potential for use in a wide range of applications, for example, in phosphors, 2,3 varistors, 4a,4b gas sensors, 57 UV absorbers, 8 and antimicrobial agents, 9 and more recently, in solar cells.

show abstract

“…All the patterns showed peaks at 32. 9 and 34.5 , which were assigned to the Si (2 0 0) and ZnO (0 0 2) diffractions, respectively. No traces of Mg metal or oxides were detected, indicating that the wurtzite structure had not been modified by incorporating Mg atoms into the ZnO matrix.…”

Section: Methodsmentioning

confidence: 99%

“…[6][7][8] Various techniques, such as chemical vapor deposition, molecular beam epitaxy, pulsed laser deposition, thermal evaporation, spray pyrolysis, and sol-gel spin-coating have been used to prepare MZO thin films. [9][10][11][12][13][14] Sol-gel spin-coating has distinct advantages such as reproducibility and low cost, and it can be used to mass produce uniform large-area coatings. However, these advantages are only provided when MZO thin films are directly deposited onto substrates because large degrees of lattice mismatch and significant differences between the thermal expansion coefficients of films and substrates can generate residual stress and defects, which can deteriorate film crystallinity.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the Crystallinity of MgZnO with a Zn Buffer Layer by Sol–Gel Spin‐coating Method

Kim

et al. 2015

Bulletin Korean Chem Soc

View full text Add to dashboard Cite

We fabricate magnesium zinc oxide (MZO) thin films inserting a buffer layer between a film and a substrate with different annealing temperatures. The structural and optical properties of MZO thin films are investigated by using scanning electron microscopy, X-ray diffraction (XRD), and photoluminescence. The XRD patterns for the buffer layers annealed at 200 C show the narrowest full width at half maximum and the most intense (0 0 2) diffraction peak. In addition, the buffer layers decrease the magnitude of the residual stress between the MZO thin film and the silicon substrate. The near-band-edge emission peaks intensify and the deep-level emission peaks significantly intensify with increasing buffer layer annealing temperatures. Inserting a buffer layer between a film and a substrate improves the crystallinity of MZO thin films.

show abstract

Structural and optoelectrical investigation of transparent and conductive ZnO thin films prepared by chemical vapor deposition

Cited by 21 publications

References 6 publications

Structural, EPR, photo and thermoluminescence properties of ZnO:Fe nanoparticles

Structural, EPR, photo and thermoluminescence properties of ZnO:Fe nanoparticles

Synthesis of ZnO and ZnO2 Nanoparticles by the Oil-in-water Microemulsion Reaction Method

Improvement of the Crystallinity of MgZnO with a Zn Buffer Layer by Sol–Gel Spin‐coating Method

Contact Info

Product

Resources

About