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Photoluminescence and acceptor level state of p-type nitrogen-doped MgZnO films
Wei Z.P.4; Yao B.4; Wang X.H.4; Zhang Z.Z.4; Lu Y.M.4; Shen D.Z.4; Li B.H.4; Zhang J.Y.4; Zhao D.X.4; Fan X.W.4; Tang Z.K.3
2007-10-01
Source PublicationJournal of Materials Research
ISSN08842914
Volume22Issue:10Pages:2791-2795
AbstractA wurtzite nitrogen-doped MgZnO (MgZnO:N) film was grown by plasma-assisted molecular-beam epitaxy (PAMBE) on c-plane sapphire using radical NO as oxygen source and nitrogen dopant. The as-grown film shows n-type conduction at room temperature, but transforms into p-type conduction after annealed. Photoluminescence (PL) spectrum measured at 80 K is dominated by neutral donor-bound exciton emission (DX) located at 3.522 eV for the n-type MgZnO:N film, but by neutral acceptor-bound exciton emission (AX) located at 3.515 eV for the p-type MgZnO:N film. By fitting exciton emission intensity of temperature-dependent PL spectra, the binding energies of the DX and AX were estimated to be 32 and 43 meV, respectively. Based on the energy shift of exciton emission, the band gap of the MgZnO:N film is estimated to be 3.613 eV, which is 179 meV larger than that of ZnO. Using the Haynes rule, the acceptor energy level of the MgZnO:N film was evaluated to be about 176 meV above the valence band. © 2007 Materials Research Society.
DOI10.1557/jmr.2007.0349
URLView the original
Language英語
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Cited Times [WOS]:6   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.University of Chinese Academy of Sciences
2.Changchun University of Science and Technology
3.Hong Kong University of Science and Technology
4.Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences
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Wei Z.P.,Yao B.,Wang X.H.,et al. Photoluminescence and acceptor level state of p-type nitrogen-doped MgZnO films[J]. Journal of Materials Research,2007,22(10):2791-2795.
APA Wei Z.P..,Yao B..,Wang X.H..,Zhang Z.Z..,Lu Y.M..,...&Tang Z.K..(2007).Photoluminescence and acceptor level state of p-type nitrogen-doped MgZnO films.Journal of Materials Research,22(10),2791-2795.
MLA Wei Z.P.,et al."Photoluminescence and acceptor level state of p-type nitrogen-doped MgZnO films".Journal of Materials Research 22.10(2007):2791-2795.
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