Photoluminescence of Cd1-xMnxS (x ≤ 0.3) nanowires

被引：70
作者：
Na, CW
Han, DS
Kim, DS
Kang, YJ
Lee, JY
Park, J [1 ]
Oh, DK
Kim, KS
Kim, D
机构：
[1] Korea Univ, Dept Chem, Jochiwon 339700, South Korea
[2] Korea Basic Sci Inst, Mat Sci Lab, Taejon 305333, South Korea
[3] Yonsei Univ, Ctr Ultrafast Opt Characterist Control, Seoul 120749, South Korea
[4] Yonsei Univ, Dept Chem, Seoul 120749, South Korea
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2006年 / 110卷 / 13期
关键词：
D O I：
10.1021/jp060224p
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Cd1-xMnxS (x = 0.1 - 0.3) nanowires were synthesized by using the chemical vapor deposition method. They all consist of a single-crystalline wurtzite CAS structure with a [010] or [011] growth direction. The X-ray diffraction pattern reveals the contraction of the lattice constants due to the incorporation of Mn. The Mn2+ emission at similar to 2.15 eV, originating from the d-d (T-4(1) -> (6)A(1)) transition, appears below 50-80 K. Its decay time is in the range of 0.55-1 ms, showing a decrease with increasing Mn content. The Mn doping reduces significantly the decay time of band-edge emission from 590 ps to 20 - 30 ps. Upon applying magnetic field (up to 7 T), the Mn2+ emission is suppressed and donor-acceptor pair emission becomes dominant, suggesting the energy transfer from the band electrons to the Mn2+ ions.
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收藏
页码：6699 / 6704
页数：6
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