Local irradiation effects of one-dimensional ZnO based self-powered asymmetric Schottky barrier UV photodetector

Yaxue Zhao; Junjie Qi; Chandan Biswas; Feng Li; Kui Zhang; Xin Li; Yue Zhang

doi:10.1016/j.matchemphys.2015.09.034

Local irradiation effects of one-dimensional ZnO based self-powered asymmetric Schottky barrier UV photodetector

Yaxue Zhao
, Junjie Qi
, Chandan Biswas
, Feng Li
, Kui Zhang
, Xin Li
, Yue Zhang^*

^*Corresponding author for this work

University of Science and Technology Beijing
University of California at Los Angeles

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

15 Scopus citations

Abstract

A self-powered metal-semiconductor-metal (MSM) UV photodetector was successfully fabricated based on Ag/ZnO/Au structure with asymmetric Schottky barriers. This exhibits excellent performance compared to many previous studies. Very high photo-to-dark current ratio (approximately 10⁵-10⁶) was demonstrated without applying any external bias, and very fast switching time of less than 30 ms was observed during the investigation. Opposite photocurrent direction was generated by irradiating different Schottky diodes in the fabricated photodetector. Furthermore, the device performance was optimized by largely irradiating both the ZnO microwire (MW) junctions. Schottky barrier effect theory and O₂ adsorption-desorption theories were used to investigate the phenomenon. The device has potential applications in self-powered UV detection field and can be used as electrical power source for electronic, optoelectronic and mechanical devices.

Original language	English
Pages (from-to)	116-121
Number of pages	6
Journal	Materials Chemistry and Physics
Volume	166
DOIs	https://doi.org/10.1016/j.matchemphys.2015.09.034
State	Published - 15 Sep 2015
Externally published	Yes

Keywords

Chemical vapour deposition
Electrical properties
Nanostructures
Semiconductors

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10.1016/j.matchemphys.2015.09.034

Cite this

@article{a4da8937b9fe4751b6055b41d9b8b1df,

title = "Local irradiation effects of one-dimensional ZnO based self-powered asymmetric Schottky barrier UV photodetector",

abstract = "A self-powered metal-semiconductor-metal (MSM) UV photodetector was successfully fabricated based on Ag/ZnO/Au structure with asymmetric Schottky barriers. This exhibits excellent performance compared to many previous studies. Very high photo-to-dark current ratio (approximately 105-106) was demonstrated without applying any external bias, and very fast switching time of less than 30 ms was observed during the investigation. Opposite photocurrent direction was generated by irradiating different Schottky diodes in the fabricated photodetector. Furthermore, the device performance was optimized by largely irradiating both the ZnO microwire (MW) junctions. Schottky barrier effect theory and O2 adsorption-desorption theories were used to investigate the phenomenon. The device has potential applications in self-powered UV detection field and can be used as electrical power source for electronic, optoelectronic and mechanical devices.",

keywords = "Chemical vapour deposition, Electrical properties, Nanostructures, Semiconductors",

author = "Yaxue Zhao and Junjie Qi and Chandan Biswas and Feng Li and Kui Zhang and Xin Li and Yue Zhang",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

month = sep,

day = "15",

doi = "10.1016/j.matchemphys.2015.09.034",

language = "英语",

volume = "166",

pages = "116--121",

journal = "Materials Chemistry and Physics",

issn = "0254-0584",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Local irradiation effects of one-dimensional ZnO based self-powered asymmetric Schottky barrier UV photodetector

AU - Zhao, Yaxue

AU - Qi, Junjie

AU - Biswas, Chandan

AU - Li, Feng

AU - Zhang, Kui

AU - Li, Xin

AU - Zhang, Yue

PY - 2015/9/15

Y1 - 2015/9/15

N2 - A self-powered metal-semiconductor-metal (MSM) UV photodetector was successfully fabricated based on Ag/ZnO/Au structure with asymmetric Schottky barriers. This exhibits excellent performance compared to many previous studies. Very high photo-to-dark current ratio (approximately 105-106) was demonstrated without applying any external bias, and very fast switching time of less than 30 ms was observed during the investigation. Opposite photocurrent direction was generated by irradiating different Schottky diodes in the fabricated photodetector. Furthermore, the device performance was optimized by largely irradiating both the ZnO microwire (MW) junctions. Schottky barrier effect theory and O2 adsorption-desorption theories were used to investigate the phenomenon. The device has potential applications in self-powered UV detection field and can be used as electrical power source for electronic, optoelectronic and mechanical devices.

AB - A self-powered metal-semiconductor-metal (MSM) UV photodetector was successfully fabricated based on Ag/ZnO/Au structure with asymmetric Schottky barriers. This exhibits excellent performance compared to many previous studies. Very high photo-to-dark current ratio (approximately 105-106) was demonstrated without applying any external bias, and very fast switching time of less than 30 ms was observed during the investigation. Opposite photocurrent direction was generated by irradiating different Schottky diodes in the fabricated photodetector. Furthermore, the device performance was optimized by largely irradiating both the ZnO microwire (MW) junctions. Schottky barrier effect theory and O2 adsorption-desorption theories were used to investigate the phenomenon. The device has potential applications in self-powered UV detection field and can be used as electrical power source for electronic, optoelectronic and mechanical devices.

KW - Chemical vapour deposition

KW - Electrical properties

KW - Nanostructures

KW - Semiconductors

UR - https://www.scopus.com/pages/publications/84945277112

U2 - 10.1016/j.matchemphys.2015.09.034

DO - 10.1016/j.matchemphys.2015.09.034

M3 - 文章

AN - SCOPUS:84945277112

SN - 0254-0584

VL - 166

SP - 116

EP - 121

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

ER -

Local irradiation effects of one-dimensional ZnO based self-powered asymmetric Schottky barrier UV photodetector

Abstract

Keywords

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