Efficient multispectral photodetection using Mn doped ZnO nanowires

被引：98

作者：

Prabhakar, Rajiv Ramanujam ^{[2
]}

Mathews, Nripan ^{[1
]}

Jinesh, K. B. ^{[2
]}

Karthik, K. R. G. ^{[1
]}

Pramana, Stevin Snellius ^{[1
]}

Varghese, Binni ^{[3
]}

Sow, Chorng Haur ^{[3
]}

Mhaisalkar, Subodh ^{[1
,2
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[2] Nanyang Technol Univ, Energy Res Inst, Singapore 637553, Singapore

[3] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 19期

关键词：

ULTRAVIOLET PHOTODETECTORS; UV PHOTODETECTORS; SINGLE; NANOSTRUCTURES; GAN; PHOTOCONDUCTORS; DIAMOND; FILMS; GAIN;

D O I：

10.1039/c2jm16698d

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：

Crystalline Mn doped ZnO nanowires were synthesized by chemical vapour deposition. The presence of Mn dopant was confirmed by X-Ray diffraction, Raman spectroscopy, transmission electron microscopy and X-Ray photoelectron spectroscopy. The photoconductivity of an individual Mn doped ZnO nanowire was investigated under different visible light excitations (532 and 405 nm). The nanowire exhibited high dark to photocurrent ratios (similar to 50), fast photocurrent response (similar to 100-250 ms), and reasonably high responsivity and external quantum efficiencies with good repeatability under different visible light illuminations. These results indicate that Mn doped ZnO nanowires would be promising for efficient multispectral photodetectors and optical switches.

引用

页码：9678 / 9683

页数：6

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