Vertically aligned Mn-doped zinc oxide nanorods by hybrid wet chemical route

被引：8

作者：

Gayen, R. N. ^{[1
]}

Majumder, S. ^{[2
]}

Varma, S. ^{[2
]}

Pal, A. K. ^{[1
]}

机构：

[1] Jadavpur Univ, Dept Instrumentat Sci, Kolkata 700032, W Bengal, India

[2] Inst Phys, Bhubaneswar 751007, Orissa, India

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2010年 / 123卷 / 01期

关键词：

ZnO nanorods; Mn-doping; Photoluminescence; THIN-FILMS; ZNO NANORODS; OPTICAL-TRANSITIONS; FERROMAGNETISM; SEMICONDUCTORS; DEPOSITION; GAN;

D O I：

10.1016/j.matchemphys.2010.03.073

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mn-doped zinc oxide (Mn:ZnO) nanorods were synthesized by incorporating manganese in aligned ZnO nanorods. For this, Mn was evaporated onto ZnO nanorods and the composite structure was subjected to rapid thermal annealing. The nanorods were preferentially oriented in (0 0 2) direction as indicated by the XRD measurement. Optical band gap was seen to decrease with increasing amount of Mn incorporation. XPS studies indicated that incorporated Mn was in Mn2+ and Mn4+ states. Mn2+ atomic concentration was found to be larger than Mn4+ concentration in all the samples. The Raman spectra of the Mn:ZnO nanorods indicated the presence of the characteristic peak at similar to 438 cm(-1) for high frequency branch of E-2 mode of ZnO. The PL peak at similar to 376 nm (similar to 3.29 eV) was ascribed to the band edge luminescence while the peak at similar to 394 nm (similar to 3.15 eV) was assigned to the donor bound exciton (D degrees X) and free exciton transition related to Mn2+ states. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：138 / 146

页数：9

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