Optical characterization of ZnMnO thin films on c-Al2O 3

H. J. Lin, Der-Yuh Lin, Jenq-Shinn Wu, W. C. Chou, C. S. Yang, J. S. Wang, W. H. Lo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Various optical measurement technologies have been used to characterize ZnMnO thin films with different Mn compositions grown by molecular beam epitaxy (MBE) on c-Al2O3 substrates. The lattice constant and the crystalization quality have been evaluated by using X-ray diffraction (XRD). Photoluminescence (PL) has been used to reveal the neutral-donor-bound exciton (D0X) and to check the film's quality. Defect-related absorption signatures, in addition to near-band-edge absorption, due to the zinc vacancy and the donor-acceptor pair (DAP) have been found in the surface photovoltage spectra (SPS). Free excitonic transitions and their phonon-assisted replicas have been observed in the reflectance spectra. Our experimental results not only unveil specific optical transition energies but also indicate a rapid material deterioration when Mn incorporation goes beyond a certain amount to cause manganese segregation.

Original languageEnglish
Pages (from-to)98-101
Number of pages4
JournalJournal of the Korean Physical Society
Volume53
Issue number1
DOIs
Publication statusPublished - 2008 Jan 1

Fingerprint

photovoltages
thin films
deterioration
replicas
optical measurement
optical transition
manganese
molecular beam epitaxy
zinc
excitons
signatures
reflectance
photoluminescence
causes
defects
diffraction
x rays
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Lin, H. J. ; Lin, Der-Yuh ; Wu, Jenq-Shinn ; Chou, W. C. ; Yang, C. S. ; Wang, J. S. ; Lo, W. H. / Optical characterization of ZnMnO thin films on c-Al2O 3 In: Journal of the Korean Physical Society. 2008 ; Vol. 53, No. 1. pp. 98-101.
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Optical characterization of ZnMnO thin films on c-Al2O 3 . / Lin, H. J.; Lin, Der-Yuh; Wu, Jenq-Shinn; Chou, W. C.; Yang, C. S.; Wang, J. S.; Lo, W. H.

In: Journal of the Korean Physical Society, Vol. 53, No. 1, 01.01.2008, p. 98-101.

Research output: Contribution to journalArticle

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