Fabrication of alloys and superlattices based on ZnO towards ultraviolet laser

Ohtomo, Akira; Kawasaki, Megumi; Sakurai, Yasuhisa; Ohkubo, I.; Shiroki, R.; Yoshida, Yasuhiko; Yasuda, Takashi; Segawa, Y.; Koinuma, H.

doi:10.1016/s0921-5107(98)00218-9

Cited by 121 publications

(57 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Fig. 5, peak energies of NBE emissions are plotted as a function of composition x together with reported values for L-MBE films [10]. For both the L-MBE and CSP films, the PL peak energy of the NBE emission increases sublinearly with increasing alloy composition x.…”

Section: Methodsmentioning

confidence: 89%

Structural and optical properties of polycrystalline Mg _x Zn _1–x O and ZnO:Mn films prepared by chemical spray pyrolysis

Terasako

Yagi

Kariya

et al. 2006

Phys. Status Solidi (c)

View full text Add to dashboard Cite

Polycrystalline Mg x Zn 1-x O (0.00 ≤ x ≤ 0.21) and ZnO:Mn films prepared by chemical spray pyrolysis were characterized by X-ray diffraction, optical transmittance, photoacoustic (PA) spectroscopy and photoluminescence (PL). Successful growth of the Mg x Zn 1-x O (0.00 ≤ x ≤ 0.21) films was confirmed by the blue shift of both the near-band-edge PL peak and absorption edge with increasing the alloy composition x. However, the influence of the tail states caused by the deviation from stoichiometric compsosition and/or the spatial fluctuation of the alloy composition x was observed on the PA and PL spectra. Both the transmittance and PA spectra for the ZnO:Mn films showed the absorption band due to the d-d transitions in Mn 2+ ion.

show abstract

Section: Methodsmentioning

confidence: 89%

Structural and optical properties of polycrystalline Mg _x Zn _1–x O and ZnO:Mn films prepared by chemical spray pyrolysis

Terasako

Yagi

Kariya

et al. 2006

Phys. Status Solidi (c)

View full text Add to dashboard Cite

show abstract

“…5 Accordingly, MZO thin films, whose lattice constants are similar to those of ZnO, have been investigated for various electronic and optoelectronic devices such as MZO heterojunctions, superlattices, and quantum wells. [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.…”

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

“…Originally sapphire [3] substrates were used. To grow ZnO and its related alloys, other substrates such as SCAM, Si(111), and GaN * Correspondence: thierry.bretagnon@univ-montp2.fr have been successfully used since then.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of ZnO/(Zn, Mg)O quantum wells

Bretagnon

2014

Turk J Phys

View full text Add to dashboard Cite

This paper reviews the optical properties of ZnO/(Zn, Mg)O single quantum wells grown by molecular beam epitaxy. Both heteroepitaxial quantum well growth along the polar c-direction and homoepitaxial quantum well growth on the nonpolar M plane cases are considered. The optical properties of these quantum wells are investigated by using reflectance, continuous wave photoluminescence, and time-resolved photoluminescence spectroscopies. The quantum-confined Stark effect dominates the properties of the excitons for polar quantum wells. The magnitude of the internal electric field that is induced by both spontaneous and piezoelectric polarizations is determined by comparing the experimental results with a variational calculation of excitonic energies and lifetimes. For nonpolar quantum wells, the optical spectra reveal strong in-plane optical anisotropies, as predicted by the group theory. Moreover, the radiative recombination of free excitons is dominating the quantum well photoluminescence even at room temperature.

show abstract

Fabrication of alloys and superlattices based on ZnO towards ultraviolet laser

Cited by 121 publications

References 12 publications

Structural and optical properties of polycrystalline Mg _x Zn _1–x O and ZnO:Mn films prepared by chemical spray pyrolysis

Structural and optical properties of polycrystalline Mg _x Zn _1–x O and ZnO:Mn films prepared by chemical spray pyrolysis

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

Optical properties of ZnO/(Zn, Mg)O quantum wells

Contact Info

Product

Resources

About

Fabrication of alloys and superlattices based on ZnO towards ultraviolet laser

Cited by 121 publications

References 12 publications

Structural and optical properties of polycrystalline Mg x Zn 1–x O and ZnO:Mn films prepared by chemical spray pyrolysis

Structural and optical properties of polycrystalline Mg x Zn 1–x O and ZnO:Mn films prepared by chemical spray pyrolysis

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

Optical properties of ZnO/(Zn, Mg)O quantum wells

Contact Info

Product

Resources

About

Structural and optical properties of polycrystalline Mg _x Zn _1–x O and ZnO:Mn films prepared by chemical spray pyrolysis

Structural and optical properties of polycrystalline Mg _x Zn _1–x O and ZnO:Mn films prepared by chemical spray pyrolysis