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Photoluminescence of excitons and defects in ZnSe-based longitudinal twinning nanowires
- Authors
- Xu, Jing; Wang, Chunrui; Lu, Aijiang; Wu, Binhe; Chen, Xiaoshuang; Oh, Hongseok; Baek, Hyeonjun; Yi, Gyu-Chul; Ouyang, Lizhi
- Issue Date
- Dec-2014
- Publisher
- IOP PUBLISHING LTD
- Keywords
- ZnSe twinning nanowires; temperature-dependent PL; exciton; defect
- Citation
- JOURNAL OF PHYSICS D-APPLIED PHYSICS, v.47, no.48
- Journal Title
- JOURNAL OF PHYSICS D-APPLIED PHYSICS
- Volume
- 47
- Number
- 48
- ISSN
- 0022-3727
- Abstract
- Photoluminescence spectrum is a powerful tool to investigate the excitonic and defect-related information in condensed phase materials. Through temperature-dependent photoluminescence spectra, heavy- and light-hole free excitons, and the exciton bound to a neutral donor and the accompanied LO-phonon replicas of the zinc blende ZnSe are observed and verified in ZnSe-based longitudinal twinning nanowires. In the deep-level emission region, two peaks at 1.979 and 2.315 eV are attributed to the donor-acceptor-pair recombination and the acceptor impurity of Au, respectively.
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Related Researcher
- Oh, Hongseok
- College of Natural Sciences (Department of Physics)