Ordered arrays of ZnO nanorods grown on periodically polarity-inverted surfaces

被引：59

作者：

Lee, Sang Hyun ^{[1
]}

Minegishi, Tsutomu ^{[2
]}

Park, Jin Sub ^{[2
]}

Park, Seung Hwan ^{[2
]}

Ha, Jun-Seok ^{[1
]}

Lee, Hyo-Jong ^{[1
]}

Lee, Hyun-Jae ^{[1
]}

Ahn, Sungmo ^{[3
]}

Kim, Jaehoon ^{[3
]}

Jeon, Heonsu ^{[3
]}

Yao, Takafumi ^{[1
,2
]}

机构：

[1] Tohoku Univ, Ctr Interdisciplinary Res, Aoba Ku, Sendai, Miyagi 9808578, Japan

[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[3] Seoul Natl Univ, Dept Phys & Astron, Interuniv Semicond Res Ctr, Seoul 151747, South Korea

来源：

NANO LETTERS | 2008年 / 8卷 / 08期

基金：

日本学术振兴会;

关键词：

Zinc oxide;

D O I：

10.1021/nl801344s

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Periodically polarity inverted (PPI) ZnO templates were fabricated using molecular beam epitaxy by employing MgO buffer layers. The polarity of ZnO film was controlled by the transformation of crystal structure from hexagonal to rocksalt due to the thickness of the MgO buffer layers. The polarity of ZnO in the PPI template was confirmed by AFM and PRM measurement. Higher growth rate and lower current value under positive supplied voltage in the region of Zn-polar were measured with comparing to that of O-polar. Holographic lithographic technique was employed for the realization of submicron pattern of periodical inverted polar ZnO over large area. After reaction using a carbothermal reduction, spatially well-separated ZnO nanorods with pitch of submicron were only observed in the Zn-polar regions. The possible reason for the difference of surface characteristics was considered as being due to the configuration of dangling bonds according to polarity.

引用

页码：2419 / 2422

页数：4

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