Dependence of photocurrent on UV wavelength in ZnO/Pt bottom-contact Schottky diode

Byoungho Lee; Changmin Kim; Youngmin Lee; Sejoon Lee; Deuk Young Kim

doi:10.1016/j.cap.2014.10.024

Dependence of photocurrent on UV wavelength in ZnO/Pt bottom-contact Schottky diode

Byoungho Lee
, Changmin Kim
, Youngmin Lee
, Sejoon Lee
, Deuk Young Kim

Division of System Semiconductor

Dongguk University

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

11 Scopus citations

Abstract

We fabricated the bottom-contacted ZnO/Pt Schottky diode and investigated the dependence of its photocurrent on the wavelength of illuminated ultraviolet (UV) light source. The bottom-contacted Schottky diode was devised by growing (000l) ZnO on (111) Pt, and the fabricated device showed a strong dependence on the UV wavelength for its photo-response characteristics. When longer-wavelength-UV (e.g., UV-A) was illuminated on the device, the photo-current was increased by a factor of 200, compared to that under illumination of shorter-wavelength-UV (e.g., UV-C). The behavior is attributed to the wavelength-dependent UV penetration depth for ZnO.

Original language	English
Pages (from-to)	29-33
Number of pages	5
Journal	Current Applied Physics
Volume	15
Issue number	1
DOIs	https://doi.org/10.1016/j.cap.2014.10.024
State	Published - Jan 2015

Keywords

Bottom-contact
Platinum
Schottky diode
UV response
Zinc oxide

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10.1016/j.cap.2014.10.024

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title = "Dependence of photocurrent on UV wavelength in ZnO/Pt bottom-contact Schottky diode",

abstract = "We fabricated the bottom-contacted ZnO/Pt Schottky diode and investigated the dependence of its photocurrent on the wavelength of illuminated ultraviolet (UV) light source. The bottom-contacted Schottky diode was devised by growing (000l) ZnO on (111) Pt, and the fabricated device showed a strong dependence on the UV wavelength for its photo-response characteristics. When longer-wavelength-UV (e.g., UV-A) was illuminated on the device, the photo-current was increased by a factor of 200, compared to that under illumination of shorter-wavelength-UV (e.g., UV-C). The behavior is attributed to the wavelength-dependent UV penetration depth for ZnO.",

keywords = "Bottom-contact, Platinum, Schottky diode, UV response, Zinc oxide",

author = "Byoungho Lee and Changmin Kim and Youngmin Lee and Sejoon Lee and Kim, \{Deuk Young\}",

year = "2015",

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doi = "10.1016/j.cap.2014.10.024",

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volume = "15",

pages = "29--33",

journal = "Current Applied Physics",

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T1 - Dependence of photocurrent on UV wavelength in ZnO/Pt bottom-contact Schottky diode

AU - Lee, Byoungho

AU - Kim, Changmin

AU - Lee, Youngmin

AU - Lee, Sejoon

AU - Kim, Deuk Young

PY - 2015/1

Y1 - 2015/1

N2 - We fabricated the bottom-contacted ZnO/Pt Schottky diode and investigated the dependence of its photocurrent on the wavelength of illuminated ultraviolet (UV) light source. The bottom-contacted Schottky diode was devised by growing (000l) ZnO on (111) Pt, and the fabricated device showed a strong dependence on the UV wavelength for its photo-response characteristics. When longer-wavelength-UV (e.g., UV-A) was illuminated on the device, the photo-current was increased by a factor of 200, compared to that under illumination of shorter-wavelength-UV (e.g., UV-C). The behavior is attributed to the wavelength-dependent UV penetration depth for ZnO.

AB - We fabricated the bottom-contacted ZnO/Pt Schottky diode and investigated the dependence of its photocurrent on the wavelength of illuminated ultraviolet (UV) light source. The bottom-contacted Schottky diode was devised by growing (000l) ZnO on (111) Pt, and the fabricated device showed a strong dependence on the UV wavelength for its photo-response characteristics. When longer-wavelength-UV (e.g., UV-A) was illuminated on the device, the photo-current was increased by a factor of 200, compared to that under illumination of shorter-wavelength-UV (e.g., UV-C). The behavior is attributed to the wavelength-dependent UV penetration depth for ZnO.

KW - Bottom-contact

KW - Platinum

KW - Schottky diode

KW - UV response

KW - Zinc oxide

UR - https://www.scopus.com/pages/publications/84910683626

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DO - 10.1016/j.cap.2014.10.024

M3 - Article

AN - SCOPUS:84910683626

SN - 1567-1739

VL - 15

SP - 29

EP - 33

JO - Current Applied Physics

JF - Current Applied Physics

IS - 1

ER -

Dependence of photocurrent on UV wavelength in ZnO/Pt bottom-contact Schottky diode

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Keywords

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