Noise properties of ZnO nanowalls deposited using rapid thermal evaporation technology

T. P. Chen; F. Y. Hung; S. P. Chang; S. J. Chang; S. L. Wu; Z. S. Hu

doi:10.1109/LPT.2012.2233731

Noise properties of ZnO nanowalls deposited using rapid thermal evaporation technology

T. P. Chen, F. Y. Hung, S. P. Chang, S. J. Chang, S. L. Wu, Z. S. Hu

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

7 Citations (Scopus)

Abstract

ZnO nanowalls are rapidly grown on a glass substrate using a low-temperature thermal evaporation method, without the use of a catalyst and the pre-deposition of a ZnO seed layer on the substrate. Most of the ZnO nanowalls are grown vertically and are about 70-200-nm thick and 2-μm long. The room-temperature photoluminescence spectra show a strong intrinsic ultraviolet (UV) emission and a weak defectrelated orange emission. The ZnO nanowall UV sensor is highly sensitive to UV light, with an excellent UV-to-visible ratio and good flicker noise characteristics. This shows the strong potential of ZnO nanowalls for use in UV sensors. At an applied bias of 2 V, the noise equivalent power and the normalized detectivity of the ZnO nanowall UV sensor are 1.87 × 10^-10 W and 3.38 × 10 ⁹ cm·Hz^0.5·W^-1, respectively..

Original language	English
Article number	6384664
Pages (from-to)	213-216
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	25
Issue number	3
DOIs	https://doi.org/10.1109/LPT.2012.2233731
Publication status	Published - 2013

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/LPT.2012.2233731

Cite this

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title = "Noise properties of ZnO nanowalls deposited using rapid thermal evaporation technology",

abstract = "ZnO nanowalls are rapidly grown on a glass substrate using a low-temperature thermal evaporation method, without the use of a catalyst and the pre-deposition of a ZnO seed layer on the substrate. Most of the ZnO nanowalls are grown vertically and are about 70-200-nm thick and 2-μm long. The room-temperature photoluminescence spectra show a strong intrinsic ultraviolet (UV) emission and a weak defectrelated orange emission. The ZnO nanowall UV sensor is highly sensitive to UV light, with an excellent UV-to-visible ratio and good flicker noise characteristics. This shows the strong potential of ZnO nanowalls for use in UV sensors. At an applied bias of 2 V, the noise equivalent power and the normalized detectivity of the ZnO nanowall UV sensor are 1.87 × 10-10 W and 3.38 × 10 9 cm·Hz0.5·W-1, respectively..",

author = "Chen, {T. P.} and Hung, {F. Y.} and Chang, {S. P.} and Chang, {S. J.} and Wu, {S. L.} and Hu, {Z. S.}",

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T1 - Noise properties of ZnO nanowalls deposited using rapid thermal evaporation technology

AU - Chen, T. P.

AU - Hung, F. Y.

AU - Chang, S. P.

AU - Chang, S. J.

AU - Wu, S. L.

AU - Hu, Z. S.

PY - 2013

Y1 - 2013

N2 - ZnO nanowalls are rapidly grown on a glass substrate using a low-temperature thermal evaporation method, without the use of a catalyst and the pre-deposition of a ZnO seed layer on the substrate. Most of the ZnO nanowalls are grown vertically and are about 70-200-nm thick and 2-μm long. The room-temperature photoluminescence spectra show a strong intrinsic ultraviolet (UV) emission and a weak defectrelated orange emission. The ZnO nanowall UV sensor is highly sensitive to UV light, with an excellent UV-to-visible ratio and good flicker noise characteristics. This shows the strong potential of ZnO nanowalls for use in UV sensors. At an applied bias of 2 V, the noise equivalent power and the normalized detectivity of the ZnO nanowall UV sensor are 1.87 × 10-10 W and 3.38 × 10 9 cm·Hz0.5·W-1, respectively..

AB - ZnO nanowalls are rapidly grown on a glass substrate using a low-temperature thermal evaporation method, without the use of a catalyst and the pre-deposition of a ZnO seed layer on the substrate. Most of the ZnO nanowalls are grown vertically and are about 70-200-nm thick and 2-μm long. The room-temperature photoluminescence spectra show a strong intrinsic ultraviolet (UV) emission and a weak defectrelated orange emission. The ZnO nanowall UV sensor is highly sensitive to UV light, with an excellent UV-to-visible ratio and good flicker noise characteristics. This shows the strong potential of ZnO nanowalls for use in UV sensors. At an applied bias of 2 V, the noise equivalent power and the normalized detectivity of the ZnO nanowall UV sensor are 1.87 × 10-10 W and 3.38 × 10 9 cm·Hz0.5·W-1, respectively..

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Noise properties of ZnO nanowalls deposited using rapid thermal evaporation technology

Abstract

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