Efficient multispectral photodetection using Mn doped ZnO nanowires

Rajiv Ramanujam Prabhakar; Nripan Mathews; K. B. Jinesh; K. R.G. Karthik; Stevin Snellius Pramana; Binni Varghese; Chorng Haur Sow; Subodh Mhaisalkar

doi:10.1039/c2jm16698d

Efficient multispectral photodetection using Mn doped ZnO nanowires

Rajiv Ramanujam Prabhakar, Nripan Mathews^*, K. B. Jinesh, K. R.G. Karthik, Stevin Snellius Pramana, Binni Varghese, Chorng Haur Sow, Subodh Mhaisalkar

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

99 Citations (Scopus)

Abstract

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 (∼50), fast photocurrent response (∼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.

Original language	English
Pages (from-to)	9678-9683
Number of pages	6
Journal	Journal of Materials Chemistry
Volume	22
Issue number	19
DOIs	https://doi.org/10.1039/c2jm16698d
Publication status	Published - May 21 2012
Externally published	Yes

ASJC Scopus Subject Areas

General Chemistry
Materials Chemistry

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title = "Efficient multispectral photodetection using Mn doped ZnO nanowires",

abstract = "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 (∼50), fast photocurrent response (∼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.",

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AU - Prabhakar, Rajiv Ramanujam

AU - Mathews, Nripan

AU - Jinesh, K. B.

AU - Karthik, K. R.G.

AU - Pramana, Stevin Snellius

AU - Varghese, Binni

AU - Sow, Chorng Haur

AU - Mhaisalkar, Subodh

PY - 2012/5/21

Y1 - 2012/5/21

N2 - 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 (∼50), fast photocurrent response (∼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.

AB - 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 (∼50), fast photocurrent response (∼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.

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Efficient multispectral photodetection using Mn doped ZnO nanowires

Abstract

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