Interaction of surface acoustic waves with ultraviolet light

K. Sreenivas; Sanjeev Kumar; Parmanand Sharma

doi:10.1080/00150190500315491

Interaction of surface acoustic waves with ultraviolet light

K. Sreenivas, Sanjeev Kumar, Parmanand Sharma

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

5 Citations (Scopus)

Abstract

Fabrication and functional performance of highly sensitive ultraviolet detectors based on zinc oxide (ZnO) thin film SAW device and a ZnO/LiNbO ₃ layered structure is described. A 37 MHz bulk LiNbO₃ surface acoustic wave (SAW) filter with a 71 to 200 nm-thick ZnO over layer exhibits a downshift in the frequency with ultraviolet (UV) light due to acoustoelectric interactions between the photo-generated carriers in the semiconducting ZnO over layer and the surface acoustic waves. In contrast, a 36 MHz ZnO thin film SAW delay-line fabricated on a 8 μm thick insulating ZnO film exhibited an upshift in the frequency. A linear change in frequency shift with UV intensity is found useful for the fabrication of wireless UV sensors.

Original language	English
Pages (from-to)	69-72
Number of pages	4
Journal	Ferroelectrics
Volume	329
DOIs	https://doi.org/10.1080/00150190500315491
Publication status	Published - 2005
Externally published	Yes

Keywords

SAW devices
Thin films
UV detectors
ZnO/LiNbO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1080/00150190500315491

Cite this

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title = "Interaction of surface acoustic waves with ultraviolet light",

abstract = "Fabrication and functional performance of highly sensitive ultraviolet detectors based on zinc oxide (ZnO) thin film SAW device and a ZnO/LiNbO 3 layered structure is described. A 37 MHz bulk LiNbO3 surface acoustic wave (SAW) filter with a 71 to 200 nm-thick ZnO over layer exhibits a downshift in the frequency with ultraviolet (UV) light due to acoustoelectric interactions between the photo-generated carriers in the semiconducting ZnO over layer and the surface acoustic waves. In contrast, a 36 MHz ZnO thin film SAW delay-line fabricated on a 8 μm thick insulating ZnO film exhibited an upshift in the frequency. A linear change in frequency shift with UV intensity is found useful for the fabrication of wireless UV sensors.",

keywords = "SAW devices, Thin films, UV detectors, ZnO/LiNbO",

author = "K. Sreenivas and Sanjeev Kumar and Parmanand Sharma",

year = "2005",

doi = "10.1080/00150190500315491",

language = "English",

volume = "329",

pages = "69--72",

journal = "Ferroelectrics",

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publisher = "Taylor and Francis Ltd.",

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TY - JOUR

T1 - Interaction of surface acoustic waves with ultraviolet light

AU - Sreenivas, K.

AU - Kumar, Sanjeev

AU - Sharma, Parmanand

PY - 2005

Y1 - 2005

N2 - Fabrication and functional performance of highly sensitive ultraviolet detectors based on zinc oxide (ZnO) thin film SAW device and a ZnO/LiNbO 3 layered structure is described. A 37 MHz bulk LiNbO3 surface acoustic wave (SAW) filter with a 71 to 200 nm-thick ZnO over layer exhibits a downshift in the frequency with ultraviolet (UV) light due to acoustoelectric interactions between the photo-generated carriers in the semiconducting ZnO over layer and the surface acoustic waves. In contrast, a 36 MHz ZnO thin film SAW delay-line fabricated on a 8 μm thick insulating ZnO film exhibited an upshift in the frequency. A linear change in frequency shift with UV intensity is found useful for the fabrication of wireless UV sensors.

AB - Fabrication and functional performance of highly sensitive ultraviolet detectors based on zinc oxide (ZnO) thin film SAW device and a ZnO/LiNbO 3 layered structure is described. A 37 MHz bulk LiNbO3 surface acoustic wave (SAW) filter with a 71 to 200 nm-thick ZnO over layer exhibits a downshift in the frequency with ultraviolet (UV) light due to acoustoelectric interactions between the photo-generated carriers in the semiconducting ZnO over layer and the surface acoustic waves. In contrast, a 36 MHz ZnO thin film SAW delay-line fabricated on a 8 μm thick insulating ZnO film exhibited an upshift in the frequency. A linear change in frequency shift with UV intensity is found useful for the fabrication of wireless UV sensors.

KW - SAW devices

KW - Thin films

KW - UV detectors

KW - ZnO/LiNbO

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DO - 10.1080/00150190500315491

M3 - Article

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EP - 72

JO - Ferroelectrics

JF - Ferroelectrics

SN - 0015-0193

ER -

Interaction of surface acoustic waves with ultraviolet light

Abstract

Keywords

ASJC Scopus subject areas

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