ZnO nanoparticle surface acoustic wave UV sensor

被引：65

作者：

Chivukula, Venkata ^{[1
,2
]}

Ciplys, Daumantas ^{[1
,2
,3
]}

Shur, Michael ^{[1
,2
]}

Dutta, Partha ^{[1
,2
]}

机构：

[1] Rensselaer Polytech Inst, Dept Elect Comp & Syst Engn, Troy, NY 12180 USA

[2] Rensselaer Polytech Inst, Ctr Integrated Elect, Troy, NY 12180 USA

[3] Vilnius State Univ, Dept Radiophys, LT-10222 Vilnius, Lithuania

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 23期

基金：

美国国家科学基金会;

关键词：

FILMS;

D O I：

10.1063/1.3447932

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The response to ultraviolet illumination of ZnO nanoparticles deposited on LiNbO3 substrate was investigated using surface acoustic waves (SAWs) in the wide range of UV wavelengths from 280 to 375 nm. Deposition of ZnO nanoparticles caused a SAW transmission loss of 27 dB at 64 MHz due to the acoustoelectric attenuation. Acoustoelectric change in the SAW velocity by 3.78x10(-4) under 375 nm illumination led to downshift in transmitted SAW phase by 5.5 degrees at UV power density of 691 mu W/cm(2). The spectral measurements show the peak response at 345 nm with corresponding sensitivity on the order of 2.8 ppm/(mu W/cm(2)). (C) 2010 American Institute of Physics. [doi:10.1063/1.3447932]

引用

页数：3

共 20 条

[1] SIMPLE THEORY OF ACOUSTIC AMPLIFICATION [J].