Optical properties of ZnO crystals containing internal strains

Reynolds, D. C.; Jogai, B.; Jones, R. L.; Litton, C. W.; Harsch, W. C.; Cantwell, G.

doi:10.1016/s0022-2313(99)00020-4

Cited by 44 publications

(38 citation statements)

References 6 publications

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“…The reflectance data for the bulk crystal shows similar form to those published earlier [14], with A-, B-and C-exciton features at ~ 3.361 eV, 3.391 eV and 3.428 eV respectively. Comparing the PL and reflectance spectra for the bulk sample with tensile biaxial strain using the deformation potential Hamiltonian in [16,17] and the fit parameters in these papers, with the small exchange interaction term set to zero.…”

Section: Iv: Discussion / Analysis Of Resultssupporting

confidence: 80%

“…Reflectance data has been widely published for bulk ZnO [14,15], but, to the best of our knowledge, there are few reports on polycrystalline material such as the PLD samples we have examined. The reflectance data for the bulk crystal shows similar form to those published earlier [14], with A-, B-and C-exciton features at ~ 3.361 eV, 3.391 eV and 3.428 eV respectively.…”

Section: Iv: Discussion / Analysis Of Resultsmentioning

confidence: 99%

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Effect of polycrystallinity on the optical properties of highly oriented ZnO grown by pulsed laser deposition

McGlynn

2004

Thin Solid Films

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We report the results of photoluminescence and reflectance measurements on highly caxis oriented polycrystalline ZnO grown by pulsed laser deposition. The samples measured were grown under identical conditions and were annealed in-situ at various temperatures for 10-15 minutes. The band-edge photoluminescence spectra of the material altered considerably with an increase in grain size, with increased free exciton emission and observable excitonic structure in the reflectance spectra. The green band emission also increased with increasing grain size. A deformation potential analysis of the effect of strain on the exciton energy positions of the A-& B-excitons demonstrated that the experimental exciton energies couldn't be explained solely in terms of sample strain. We propose that electric fields in the samples due to charge trapping at grain boundaries are responsible for the additional perturbation of the excitons. This

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Section: Iv: Discussion / Analysis Of Resultssupporting

confidence: 80%

Section: Iv: Discussion / Analysis Of Resultsmentioning

confidence: 99%

Effect of polycrystallinity on the optical properties of highly oriented ZnO grown by pulsed laser deposition

McGlynn

2004

Thin Solid Films

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“…The reflectance data for the bulk crystal shows similar form to those published earlier [14], with A-, B-and C-exciton features at ~ 3.361 eV, 3.391 eV and 3.428 eV respectively. Comparing the PL and reflectance spectra for the bulk sample are corrected by the longitudinal-transverse splittings (~10 meV) [16] to give the transverse exciton position.…”

Section: Iv: Discussion / Analysis Of Resultssupporting

confidence: 80%

Effect of polycrystallinity on the optical properties of highly oriented ZnO grown by pulsed laser deposition

et al. 2004

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“…The undoped ZnO sample also exhibits three peaks located at 3.287 eV, 3.219 eV and 3.146 eV, respectively, in the band edge region. These peaks correspond closely to the first three longitudinal-optical (LO) phonon replicas of the D 0 X emission, with a spacing close to the LO phonon energy of ~ 72 meV [35]. After doping the ZnO microrods with Ni, these peaks reduce dramatically, due to a reduction in the relative intensity of the near band edge emission, as shown in Fig.…”

Section: Resultsmentioning

confidence: 52%

Structural, optical and magnetic properties of Ni-doped ZnO micro-rods grown by the spray pyrolysis method

Yılmaz

McGlynn

Bacaksız

et al. 2012

Chemical Physics Letters

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Undoped and Ni-doped ZnO micro-rod arrays were successfully synthesized by the spray pyrolysis method on glass substrates. Analysis of the samples with x-ray diffraction and scanning electron microscopy showed that these micro-rod arrays had a polycrystalline wurtzite structure with a highly c-axis preferred orientation. Photoluminescence studies at both 300 K and 10 K show that the incorporation of nickel leads to a relative increase in the visible blue light band intensity. Magnetic measurements indicated that Ni-doped ZnO samples exhibit ferromagnetic behavior at room temperature, which is possibly related to the presence of point defects.

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Optical properties of ZnO crystals containing internal strains

Cited by 44 publications

References 6 publications

Effect of polycrystallinity on the optical properties of highly oriented ZnO grown by pulsed laser deposition

Effect of polycrystallinity on the optical properties of highly oriented ZnO grown by pulsed laser deposition

Effect of polycrystallinity on the optical properties of highly oriented ZnO grown by pulsed laser deposition

Structural, optical and magnetic properties of Ni-doped ZnO micro-rods grown by the spray pyrolysis method

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