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Appl. Sci. 2017, 7(1), 39; doi:10.3390/app7010039

Spin-Related Micro-Photoluminescence in Fe3+ Doped ZnSe Nanoribbons

1
Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing 100081, China
2
Wuhan National High Magnetic Field Center, School of physics, Huazhong University of Science and Technology, Wuhan 430074, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Seyed Sadeghi
Received: 19 October 2016 / Revised: 7 December 2016 / Accepted: 22 December 2016 / Published: 29 December 2016
View Full-Text   |   Download PDF [2402 KB, uploaded 29 December 2016]   |  

Abstract

Spin-related emission properties have important applications in the future information technology; however, they involve microscopic ferromagnetic coupling, antiferromagnetic or ferrimagnetic coupling between transition metal ions and excitons, or d state coupling with phonons is not well understood in these diluted magnetic semiconductors (DMS). Fe3+ doped ZnSe nanoribbons, as a DMS example, have been successfully prepared by a thermal evaporation method. Their power-dependent micro-photoluminescence (PL) spectra and temperature-dependent PL spectra of a single ZnSe:Fe nanoribbon have been obtained and demonstrated that alio-valence ion doping diminishes the exciton magnetic polaron (EMP) effect by introducing exceeded charges. The d-d transition emission peaks of Fe3+ assigned to the 4T2 (G) → 6A1 (S) transition at 553 nm and 4T1 (G) → 6A1 (S) transition at 630 nm in the ZnSe lattice have been observed. The emission lifetimes and their temperature dependences have been obtained, which reflected different spin–phonon interactions. There exists a sharp decrease of PL lifetime at about 60 K, which hints at a magnetic phase transition. These spin–spin and spin–phonon interaction related PL phenomena are applicable in the future spin-related photonic nanodevices. View Full-Text
Keywords: spin–spin coupling; micro-photoluminescence; alio-valence doping; diluted magnetic semiconductor spin–spin coupling; micro-photoluminescence; alio-valence doping; diluted magnetic semiconductor
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MDPI and ACS Style

Hou, L.; Chen, C.; Zhang, L.; Xu, Q.; Yang, X.; Farooq, M.I.; Han, J.; Liu, R.; Zhang, Y.; Shi, L.; Zou, B. Spin-Related Micro-Photoluminescence in Fe3+ Doped ZnSe Nanoribbons. Appl. Sci. 2017, 7, 39.

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