Synthesis and characterization of Mn-doped ZnO nanocrystals

被引：278

作者：

Viswanatha, R

Sapra, S

Sen Gupta, S

Satpati, B

Satyam, PV

Dev, BN

Sarma, DD ^{[1
]}

机构：

[1] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

[2] Inst Phys, Bhubaneswar 751005, Orissa, India

[3] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India

[4] Jawaharlal Nehru Ctr Adv Sci Res, Bangalore 560064, Karnataka, India

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2004年 / 108卷 / 20期

关键词：

D O I：

10.1021/jp049960o

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：

We report the synthesis and characterization of several sizes of Mn-doped ZnO nanocrystals, both in the free-standing and the capped particle forms. The sizes of these nanocrystals could be controlled by capping them with polyvinyl pyrollidone under different synthesis conditions and were estimated by X-ray diffraction and transmission electron microscopy. The absorption properties of PVP-capped Mn-doped ZnO exhibit an interesting variation of the band gap with the concentration of Mn. Fluorescence emission, electron paramagnetic resonance, and X-ray absorption spectroscopy provide evidence for the presence of Mn in the interior as well as on the surface of the nanocrystals.

引用

页码：6303 / 6310

页数：8

共 37 条

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