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Enhanced Exciton Binding Energy of ZnO by Long-Distance Perturbation of Doped Be Atoms
Su Y.Q.4; Zhu Y.4; Yong D.1; Chen M.4; Su L.4; Chen A.4; Wu Y.4; Pan B.1; Tang Z.4
2016-05-05
Source PublicationJournal of Physical Chemistry Letters
ISSN19487185
Volume7Issue:8Pages:1484-1489
AbstractThe excitonic effect in semiconductors is sensitive to dopants. Origins of dopant-induced large variation in the exciton binding energy (E ) is not well understood and has never been systematically studied. We choose ZnO as a typical high-E material, which is very promising in low-threshold lasing. To the best of our knowledge, its shortest wavelength electroluminescence lasing was realized by ZnO/BeZnO multiple quantum wells (MQWs). However, this exciting result is shadowed by a controversial E enhancement claimed. In this Letter, we reveal that the claimed E is sensible if we take Be-induced E variation into account. Detailed first-principle investigation of the interaction between dopant atoms and the lattice shows that the enhancement mainly comes from the long-distance perturbation of doped Be atoms rather than the local effect of doping atoms. This is a joint work of experiment and calculation, which from the angle of methology paves the way for understanding and predicting the E variation induced by doping.
DOI10.1021/acs.jpclett.6b00585
URLView the original
Language英語
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Cited Times [WOS]:14   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Hefei National Laboratory for Physical Sciences at Microscale
2.University of California, San Diego
3.Universidade de Macau
4.Sun Yat-Sen University
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GB/T 7714
Su Y.Q.,Zhu Y.,Yong D.,et al. Enhanced Exciton Binding Energy of ZnO by Long-Distance Perturbation of Doped Be Atoms[J]. Journal of Physical Chemistry Letters,2016,7(8):1484-1489.
APA Su Y.Q..,Zhu Y..,Yong D..,Chen M..,Su L..,...&Tang Z..(2016).Enhanced Exciton Binding Energy of ZnO by Long-Distance Perturbation of Doped Be Atoms.Journal of Physical Chemistry Letters,7(8),1484-1489.
MLA Su Y.Q.,et al."Enhanced Exciton Binding Energy of ZnO by Long-Distance Perturbation of Doped Be Atoms".Journal of Physical Chemistry Letters 7.8(2016):1484-1489.
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